5
Haemoglobin Word Search G11 E Q N C D T D G K M Y O G L O B I N E U Z Z N E G Y X O Y B M Q T O X Y H A E M O G L O B I N I P P X Y A W I Q M E V W H V X E C U A N N B F L Z J Z L U H U A X G X J B R G J H N H A E M O G L O B I N V D G H C U R V E M Y V K L E B E O S N C A AA C V P Y C K X X F A B X K Y N M D Y I D D Y F L C C V V J N U L I R H T C I C H B Y H G R J O R P V B D E P P U G W L T A J M W A V L I J Y I K D Z D S F Y G I L J F S G W O M G S Q L H O T K K E X D K W C J A I B D Q K O J G P O Z K W M Z X D F M X Y C H F R T B L V E B W M R R O Q S L H L A A H G O Q S N A I E W N O O Y N P W B L S M F D T E D R I R K M Z M R O X W H S F B G Z F N U F Z E Q K N C C D T D P A R T I A L P R E S S U R E C G K E U Z C Z P N E Y B M Q B O H R E F F E C T T I P P N A X Y A W F I I A O L Q M E V W H V X E C U A N N B F L Z C R J Z L U E N H U I L A X G X J B G J H N V D G H M Y V K A B L B E O T I S N T C A AA C V Y C K X X F A B X K Y N M R O D Y I D A B Y F A L C C V V J N U I R H T C I C B Y H G B X R J C O L O R P I V D E P P U G W L T J M W A V L I J I O Y K D A Z D L S F C A Y G I J F S G W O M T G Q L H O T K N H K E R N X G K W O F C J A I B D Q K J G P L O Z K W N Z A A X D B O P O F M S F X Y C H F T B L A V E B U W M O Q R T E R Q O I R M S L S I H L A H G O Q S T N A I E D R W U N E M O Y N T O E N P I N W B L S M F T E N D R I R I A K A M Z O M R D A T A O X D I W H S F B Z F N E U E L C S U M T F Z G E Q I R E H N C D T T D G K E U Z Z C Y B M Q T I P E P X L Y A O U I W I Q M Y E V W H V X E C A U A N N B F L R Z J O Z L X T N U H U A X G X J B G J H N L V D G H M Y V N K L B B E I A O S N C A AA C V Y C K X X P F A B X K Y N A M D I Y I D S D Y F L C C V V J N U I R H T C I C B Y H G R R J N O R E M E A H P V D E P P U G W L T J M W A V L I J Y I K D Z D S F Y G I J F S G W O M 25 Words to find PLACENTA SATURATION AFFINITY REDBLOODCELL HYDROGENCARBONATE CARBONDIOXIDE IRON DISSOCIATION MUSCLE PLASMA PARTIALPRESSURE CURVE OXYGEN KPA HAEMOGLOBIN CARBOXYHAEMOGLOBIN HAEMOGLOBINIC QUATERNARY FETAL PROTEIN MYOGLOBIN HAEM ADULT OXYHAEMOGLOBIN BOHREFFECT Myoglobin is a haemoglobin-like, iron-containing pigment found in muscle fibres. It consists of a single alpha polypeptide chain and binds only one oxygen molecule (as opposed to haemoglobin which binds 4 oxygen molecules). The oxygen dissociation curve for myoglobin is hyperbolic (as opposed to the sigmoidal curve for haemoglobin) and is to the left of that for haemoglobin. Myoglobin takes up oxygen from the haemoglobin in the blood and stores oxygen within the muscle itself. S-shaped (sigmoidal) curve that shows the partial pressures of oxygen (  pO2) in relation to the % saturation of haemoglobin. At 50 % saturation (indicated on the curve by  p50), half of the haemoglobin binding sites contain oxygen molecules. From the curve you can see that at high  pO2, as in the pulmonary capillaries, haemoglobin is nearly 100 % saturated. This point is shown by the red arrow. You can also see that at low  pO2, as in exercising muscles, haemoglobin saturation is much lower and oxygen is released. This point is shown by the blue arrow. The dissociation curve is sigmoidal in shape because binding of the 1st O2 molecule increases the affinity of haemoglobin for oxygen, making it easier for the next oxygen molecule to bind. Changes in blood CO 2  and hydrogen ion concentration (pH) cause shifts in the oxygen dissociation curve. These shifts enhance oxygen release in tissues and enhance oxygen uptake in the lungs. This is known as the BOHR EFFECT In exercising tissues,  pCO2 is high and hydrogen ion concentration, [H + ], is also high due to the formation of carbonic acid which dissociates to form bicarbonate ions and hydrogen ions (there is more information on this reaction in the carbon dioxide transport section). This increase in CO 2 and decrease in pH shifts the dissociation curve to the right for a given  pO 2 , releasing more oxygen to the tissues. In the lungs,  pCO2 is low and hydrogen ion (H + ) concentration is also low. This decrease in CO2 and increase in pH shifts the dissociation curve to the left for a given  pO2, enhancing oxygen uptake. Haemoglobin-Oxygen Dissociation Curve

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Haemoglobin Word Search G11

E Q N C D T D G K M Y O G L O B I N E U Z Z N E G Y X O Y B

M Q T O X Y H A E M O G L O B I N I P P X Y A W I Q M E V W

H V X E C U A N N B F L Z J Z L U H U A X G X J B R G J H N

H A E M O G L O B I N V D G H C U R V E M Y V K L E B E O S

N C A AA C V P Y C K X X F A B X K Y N M D Y I D D Y F L C

C V V J N U L I R H T C I C H B Y H G R J O R P V B D E P PU G W L T A J M W A V L I J Y I K D Z D S F Y G I L J F S G

W O M G S Q L H O T K K E X D K W C J A I B D Q K O J G P O

Z K W M Z X D F M X Y C H F R T B L V E B W M R R O Q S L H

L A A H G O Q S N A I E W N O O Y N P W B L S M F D T E D R

I R K M Z M R O X W H S F B G Z F N U F Z E Q K N C C D T D

P A R T I A L P R E S S U R E C G K E U Z C Z P N E Y B M Q

B O H R E F F E C T T I P P N A X Y A W F I I A O L Q M E V

W H V X E C U A N N B F L Z C R J Z L U E N H U I L A X G X

J B G J H N V D G H M Y V K A B L B E O T I S N T C A AA C

V Y C K X X F A B X K Y N M R O D Y I D A B Y F A L C C V V

J N U I R H T C I C B Y H G B X R J C O L O R P I V D E P P

U G W L T J M W A V L I J I O Y K D A Z D L S F C A Y G I J

F S G W O M T G Q L H O T K N H K E R N X G K W O F C J A I

B D Q K J G P L O Z K W N Z A A X D B O P O F M S F X Y C H

F T B L A V E B U W M O Q R T E R Q O I R M S L S I H L A H

G O Q S T N A I E D R W U N E M O Y N T O E N P I N W B L SM F T E N D R I R I A K A M Z O M R D A T A O X D I W H S F

B Z F N E U E L C S U M T F Z G E Q I R E H N C D T T D G K

E U Z Z C Y B M Q T I P E P X L Y A O U I W I Q M Y E V W H

V X E C A U A N N B F L R Z J O Z L X T N U H U A X G X J B

G J H N L V D G H M Y V N K L B B E I A O S N C A AA C V Y

C K X X P F A B X K Y N A M D I Y I D S D Y F L C C V V J N

U I R H T C I C B Y H G R R J N O R E M E A H P V D E P P U

G W L T J M W A V L I J Y I K D Z D S F Y G I J F S G W O M

25 Words to find

PLACENTA SATURATION

AFFINITY REDBLOODCELL

HYDROGENCARBONATE CARBONDIOXIDE

IRON DISSOCIATIONMUSCLE PLASMA

PARTIALPRESSURE CURVE

OXYGEN KPA

HAEMOGLOBIN CARBOXYHAEMOGLOBIN

HAEMOGLOBINIC QUATERNARY

FETAL PROTEIN

MYOGLOBIN HAEM

ADULT OXYHAEMOGLOBIN

BOHREFFECT

Myoglobin is a haemoglobin-like, iron-containing

pigment found in muscle fibres.

It consists of a single alpha polypeptide chain and

binds only one oxygen molecule (as opposed to

haemoglobin which binds 4 oxygen molecules).

The oxygen dissociation curve for myoglobin is

hyperbolic (as opposed to the sigmoidal curve for

haemoglobin) and is to the left of that for

haemoglobin.

Myoglobin takes up oxygen from the haemoglobin in

the blood and stores oxygen within the muscle itself.

S-shaped (sigmoidal) curve that shows the partial pressures of

oxygen ( pO2) in relation to the % saturation of haemoglobin.

At 50 % saturation (indicated on the curve by  p50), half of the

haemoglobin binding sites contain oxygen molecules.

From the curve you can see that at high  pO2, as in the

pulmonary capillaries, haemoglobin is nearly 100 % saturated.

This point is shown by the red arrow.

You can also see that at low  pO2, as in exercising muscles,

haemoglobin saturation is much lower and oxygen is released.

This point is shown by the blue arrow.

The dissociation curve is sigmoidal in shape because binding

of the 1st O2 molecule increases the affinity of haemoglobin

for oxygen, making it easier for the next oxygen molecule tobind.

Changes in blood CO2 and hydrogen ion concentration (pH)

cause shifts in the oxygen dissociation curve. These shifts

enhance oxygen release in tissues and enhance oxygen uptake

in the lungs. This is known as the BOHR EFFECT 

In exercising tissues,  pCO2 is high and hydrogen ion

concentration, [H+], is also high due to the formation of

carbonic acid which dissociates to form bicarbonate ions and

hydrogen ions (there is more information on this reaction in

the carbon dioxide transport section). This increase in CO2 and

decrease in pH shifts the dissociation curve to the right for a

given  pO2, releasing more oxygen to the tissues.

In the lungs,  pCO2 is low and hydrogen ion (H+) concentration

is also low. This decrease in CO2 and increase in pH shifts thedissociation curve to the left for a given  pO2, enhancing

oxygen uptake.

Haemoglobin-Oxygen Dissociation Curve

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Haemoglobin Word Search G11

K B M I U C Y Q H I T H J Q O G M Z Z N R X L V L X G T G M

J O S J V N S V T Z H P S T Y S A M S A L P K H W X N Q A E

Z H O M MM O H K O W J J R M N A J V K Z Y P K U P K R X O

O R H H V Z G U D T F O U O N K T T S D V A D B H P Q B B G

S E I X F O V Y I M H X U V U W P L U P E R K S U V R E S I

A F Y S C X X T A F W W Q J W I O V M R N U N P C W V S B AL F W I L J P Y R Y E J K O T R F N X P A O H Q N E I Y D D

D E C E X T X M G T S L A C E Z M U R Q I T R Z A T K Z B I

I C N X E Y R F Q E P D C U D W Y O L Y D A I I J A I T E S

R T N L Q Z G R L Q N C Z S O P T F P S W Q G O L N L K N S

Y C F U B B J K M I U C Y Q U E H I T H J Q O G N O M Z Z O

N R X L V L X G T G M J S J I M V H A E M O G L O B I N I C

N S P L A C E N T A V T Z N H P S T Y K H W X N Q R A A E I

Z O M MM O N I B O L G O M E A H Y X O B R A C H A K F O A

W J J R M E R U S S E R P L A I T R A P N J V K Z C Y F P T

K U P K R X O O H H V Z G U D T F O U O N K T Y S N D I V I

A D B H P Q B B G S I X F V M Y I M H X U V U R W E P N L O

P E E R K S U V R E S I A Y S E C X T A F H W A W G Q I J N

W V L L E C D O O L B D E R I O A V M U A N P N C O W T V S

B R E D I X O I D N O B R A C A L H W E I L J R P R R Y Y J

K U O T R F N X H Q N I Y D D C E X M T X M T E S D A C E Z

M C U Q I Z A K Z B I N X E Y R F O Q P D U N T D Y W Y L YD A J I T E R T N L Q Z G R L Q G C Z O P I F A P H S W Q G

L L K N Y C F L U B B J K M I L U C Y Q B H I U T H J Q O G

M Z Z N R X L U V L X G T G O M J S J O V N S Q V T Z H P S

T Y K H W X N D Q A E Z O B M MM O L H K O W J J R M N J V

K Z Y P K U P A K R X O I O H H V G Z G U D T A P K F O U O

N K T S D V A D B H P N Q B B G O S I X F V Y I M H X U V U

W P L L A T E F P E R K S U V Y N I B O L G O M E A H Y X O

R E S I A Y S C X T A F W W M Q J W I O V M U N P C W V S B

25 Words to find

HAEMOGLOBINIC CARBOXYHAEMOGLOBIN

SATURATION CURVE

AFFINITY PLACENTA

IRON HAEM

RED BLOOD CELL CARBON DIOXIDE

KPA HAEMOGLOBIN

OXYGEN PARTIAL PRESSURE

FETAL PROTEIN

DISSOCIATION PLASMA

MYOGLOBIN BOHREFFECT

MUSCLE HYDROGEN CARBONATE

ADULT QUATERNARY

OXYHAEMOGLOBIN

Haemoglobin-Oxygen Dissociation Curve

Myoglobin is a haemoglobin-like, iron-containing

pigment found in muscle fibres.

It consists of a single alpha polypeptide chain and

binds only one oxygen molecule (as opposed to

haemoglobin which binds 4 oxygen molecules).

The oxygen dissociation curve for myoglobin is

hyperbolic (as opposed to the sigmoidal curve for

haemoglobin) and is to the left of that for

haemoglobin.Myoglobin takes up oxygen from the haemoglobin in

the blood and stores oxygen within the muscle itself.

S-shaped (sigmoidal) curve that shows the partial pressures of

oxygen ( pO2) in relation to the % saturation of haemoglobin.

At 50 % saturation (indicated on the curve by  p50), half of the

haemoglobin binding sites contain oxygen molecules.

From the curve you can see that at high  pO2, as in the

pulmonary capillaries, haemoglobin is nearly 100 % saturated.

This point is shown by the red arrow.

You can also see that at low  pO2, as in exercising muscles,

haemoglobin saturation is much lower and oxygen is released.

This point is shown by the blue arrow.

The dissociation curve is sigmoidal in shape because binding

of the 1st O2 molecule increases the affinity of haemoglobin

for oxygen, making it easier for the next oxygen molecule to

bind.

Changes in blood CO2 and hydrogen ion concentration (pH)

cause shifts in the oxygen dissociation curve. These shifts

enhance oxygen release in tissues and enhance oxygen uptake

in the lungs. This is known as the BOHR EFFECT 

In exercising tissues,  pCO2 is high and hydrogen ion

concentration, [H+], is also high due to the formation of

carbonic acid which dissociates to form bicarbonate ions and

hydrogen ions (there is more information on this reaction in

the carbon dioxide transport section). This increase in CO2 and

decrease in pH shifts the dissociation curve to the right for a

given  pO2, releasing more oxygen to the tissues.

In the lungs,  pCO2 is low and hydrogen ion (H+) concentration

is also low. This decrease in CO2 and increase in pH shifts the

dissociation curve to the left for a given  pO2, enhancing

oxygen uptake.

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Haemoglobin Word Search G11

N U H E H U Z F E N T D S F N F A O T Q Z R C U A C B G P W

A B G L R P D E I T V Y H M G E W U U T W O S V D R Q Y T V

R D S C H G X E R B A X S Z E T W V P P D H N B L B O Q N W

C W V S R B T Z L C I N L J P A X Y I J O K A Q F N X U D G

Q U O U E O C C B E W T O W M L Z S A C P D Z L A P Y A H F

Z K F M R A H M E E X Q E B P V D T C A V X K E D A G T J HT E Q P T R X Y G R R W B Y R E D B L O O D C E L L E E N V

E O Y V Q G K KK M F B F U A A C A I K L H U B X Q N R G I

S N C A R B O N D I O X I D E I C G I P V F M F Z M X N X L

C I K D F S F L I R Q B M Y N U S N Y H O Z T X J H V A W M

X B Z D Y O S T S U G J N I C J I Q E S T P C J G Y N R P Q

A O O R Y W N U H H U Z B F T D N S F G N A O T Q Z I Y R C

U L A C B G P W A B G O R P D O E V Y H O M G W U U B T W O

S G V D R Q Y T V R L D S Y I H G X R N B R X S Z E O W V P

P O D H N B L B N G W C W T V R B Z L I C I D L J P L X Y I

J M O A Q F N D O G Q U A I O E C C B B E W T Y W M G Z S A

C E D Z L A P M H F Z R K N F A H M E O E X Q E H P O N V D

T A C V X K E H E C U D A I J H T E Q L T R X Y G R M O R W

B H Y N V A A E U T O Y V F Q G K KK G M F B F U A E I A I

K L H U H E B R A T C E F F E R H O B O X Q G I S G A T I P

V F M F M Z V S M X X L C A K D F S F Y L I R Q B M H A Y U

S Y H O Z E T X J H V W N I B O L G O M E A H Y X O Y I M XZ D Y O S T S U G J N N C J I Q S T P C J G Y P Q A X C O R

Y W N U H H U Z F T O D S F N A O T Q Z R C U A C B O O G P

W A B G R P D E V R Y H M P G W U U T W O S V D R Q B S Y T

V R D S H G X R I B X S L Z E W V P P D H N B L B N R S W C

W V R B Z L C I L J P A X Y I J O A Q F N D G Q U O A I E C

C B E W T W M Z S A S E R U S S E R P L A I T R A P C D C D

Z L A P H F Z K F M A H M E E X Q E P V D T C T L U D A V X

K E D A J H T E A T N E C A L P Q T R X Y G R R W B Y N V E

25 Words to find

SATURATION OXYGEN

ADULT IRON

PLASMA QUATERNARY

RED BLOOD CELL AFFINITY

MUSCLE OXYHAEMOGLOBIN

KPA CARBON DIOXIDE

HYDROGEN CARBONATE HAEMOGLOBINIC

FETAL HAEM

PLACENTA CARBOXYHAEMOGLOBIN

PARTIAL PRESSURE PROTEIN

HAEMOGLOBIN DISSOCIATION

MYOGLOBIN BOHREFFECT

CURVE

Haemoglobin-Oxygen Dissociation Curve

Myoglobin is a haemoglobin-like, iron-containing

pigment found in muscle fibres.

It consists of a single alpha polypeptide chain and

binds only one oxygen molecule (as opposed to

haemoglobin which binds 4 oxygen molecules).

The oxygen dissociation curve for myoglobin is

hyperbolic (as opposed to the sigmoidal curve for

haemoglobin) and is to the left of that for

haemoglobin.

Myoglobin takes up oxygen from the haemoglobin inthe blood and stores oxygen within the muscle itself.

S-shaped (sigmoidal) curve that shows the partial pressures of

oxygen ( pO2) in relation to the % saturation of haemoglobin.

At 50 % saturation (indicated on the curve by  p50), half of the

haemoglobin binding sites contain oxygen molecules.

From the curve you can see that at high  pO2, as in the

pulmonary capillaries, haemoglobin is nearly 100 % saturated.

This point is shown by the red arrow.

You can also see that at low  pO2, as in exercising muscles,

haemoglobin saturation is much lower and oxygen is released.

This point is shown by the blue arrow.

The dissociation curve is sigmoidal in shape because binding

of the 1st O2 molecule increases the affinity of haemoglobinfor oxygen, making it easier for the next oxygen molecule to

bind.

Changes in blood CO2 and hydrogen ion concentration (pH)

cause shifts in the oxygen dissociation curve. These shifts

enhance oxygen release in tissues and enhance oxygen uptake

in the lungs. This is known as the BOHR EFFECT 

In exercising tissues,  pCO2 is high and hydrogen ion

concentration, [H+], is also high due to the formation of

carbonic acid which dissociates to form bicarbonate ions and

hydrogen ions (there is more information on this reaction in

the carbon dioxide transport section). This increase in CO2 and

decrease in pH shifts the dissociation curve to the right for a

given  pO2, releasing more oxygen to the tissues.

In the lungs,  pCO2 is low and hydrogen ion (H+

) concentrationis also low. This decrease in CO2 and increase in pH shifts the

dissociation curve to the left for a given  pO2, enhancing

oxygen uptake.

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Haemoglobin Word Search G11

L U H U Z W G X J A G J H N V D G H M Y V K L B E O S N C A

A Z C U Y B K X X F A B T C E F F E R H O B X J Y N M D X I

D Y F K C C V V J N T A I R H T C I C B Y H F R J O R P V D

E P P O X Y G E N U D G W L T J M W P N A V L I II K D Z D

S F Y G I J F S G U W O L G Q E L H L I S A T U R A T I O N

N T K K D X K V L C Q J A I B T D Q A B K J G P O Z K W Z XD F M X Y C H T F U T B L V E A B W S O M Q R Q S L H L A H

G O Q S N A H E A W N O Y M N N P W M L B L S M F S E D R C

I R J M Y M R T O X W H S O E O B Z A G E N U F Z E P N U C

C T D G K E E L U Z Z Y I B M B Q T I O P O X Y A W I R Q M

E V W G V R X L E C U T I A N R N B F M L Z J Z L U V H U Z

W G X J N A G E J H A C N R V A D G H E M Y C V K E L B E O

S N C A AA Z C C I M I U Y O C B K X A X F A A B X J Y N M

E D R X I D Y D C F U N K C C N V V J H N T R I R H T C I C

R Y B Y H F R O J A S I O R P E V D M E P P B U G W L T J M

U W A V L I S O I T C B I K D G Z D E N S F O Y G I J F S G

S W O L G S Y L Q N L O L H N O T K A I K D N X K V C J A I

S B L D I Q T B K E E L J G P R O Z H B K W D Z X D F M X Y

E C A D H F I D T C B G L V E D B W M O Q R I N Q S L H L A

R H T G O Q N E S A N O A H E Y W N O L Y M O P I W B L S M

P F E S E D I R R L K M I R J H M Y M G R O X X W E H S E B

L Z F E N U F F Z P P E E P N C C T D O G K I E U Z T Z Y BA M Q T I P F O X Y A AA W I Q M E V Y W G D V X E C O U A

I N N B F L A Z J Z L H U H U Z W G X M J A E G J H N V R D

T G H M Y V K L B E O S N C A A Z C U Y B K X X F A B X J P

R Y N M D X I D N I B O L G O M E A H Y X O B R A C Y F K C

A O X Y H A E M O G L O B I N C V V J N T I R H T C I C B Y

P H F R J O R P V D E P P U G W L T J M W A V L I II K D Z

D S F Y G I J F S G W O L G Q L H N T K K D X K V C J A I B

D Q K J G P O Z K W Z X D F M X Y C H F T B L V E B W M Q R

25 Words to find

PARTIAL PRESSURE OXYGEN

PROTEIN CARBOXYHAEMOGLOBIN

QUATERNARY ADULT

AFFINITY HAEMOGLOBINICRED BLOOD CELL KPA

DISSOCIATION HAEM

OXYHAEMOGLOBIN CURVE

SATURATION CARBON DIOXIDE

HAEMOGLOBIN IRON

MYOGLOBIN BOHR EFFECT

PLASMA FETAL

MUSCLE HYDROGEN CARBONATE

PLACENTA

Haemoglobin-Oxygen Dissociation Curve

Myoglobin is a haemoglobin-like, iron-containing

pigment found in muscle fibres.

It consists of a single alpha polypeptide chain and

binds only one oxygen molecule (as opposed to

haemoglobin which binds 4 oxygen molecules).

The oxygen dissociation curve for myoglobin is

hyperbolic (as opposed to the sigmoidal curve for

haemoglobin) and is to the left of that for

haemoglobin.

Myoglobin takes up oxygen from the haemoglobin inthe blood and stores oxygen within the muscle itself.

S-shaped (sigmoidal) curve that shows the partial pressures of

oxygen ( pO2) in relation to the % saturation of haemoglobin.

At 50 % saturation (indicated on the curve by  p50), half of the

haemoglobin binding sites contain oxygen molecules.

From the curve you can see that at high  pO2, as in the

pulmonary capillaries, haemoglobin is nearly 100 % saturated.

This point is shown by the red arrow.

You can also see that at low  pO2, as in exercising muscles,

haemoglobin saturation is much lower and oxygen is released.

This point is shown by the blue arrow.

The dissociation curve is sigmoidal in shape because binding

of the 1st O2 molecule increases the affinity of haemoglobinfor oxygen, making it easier for the next oxygen molecule to

bind.

Changes in blood CO2 and hydrogen ion concentration (pH)

cause shifts in the oxygen dissociation curve. These shifts

enhance oxygen release in tissues and enhance oxygen uptake

in the lungs. This is known as the BOHR EFFECT 

In exercising tissues,  pCO2 is high and hydrogen ion

concentration, [H+], is also high due to the formation of

carbonic acid which dissociates to form bicarbonate ions and

hydrogen ions (there is more information on this reaction in

the carbon dioxide transport section). This increase in CO2 and

decrease in pH shifts t dissociation curve to the right for a

given  pO2, releasing more oxygen to the tissues.

In the lungs,  pCO2 is low and hydrogen ion (H+

) concentrationis also low. This decrease in CO2 and increase in pH shifts the

dissociation curve to the left for a given  pO2, enhancing

oxygen uptake.