Our OESOPHAGUSOESOPHAGUS (:

By : Brina ErhKong XinniEunice LeongLow Hui PingPeh Yan Ping

What is What is

it ?it ?OESOPHAGUS OESOPHAGUS /food pipe /gullet. 

-the muscular tube that carries food from your mouth (pharynx) to your stomach.

- it lies between the windpipe (trachea) and spinal cord.

-part of the digestive system.

Did you know ? (:Did you know ? (:the length of our oesophagus is around 25-30cm long for most adults .

How does the food How does the food move down ?move down ?

Did you know ?Did you know ?Gravity plays a part too ; but what how do bats but what how do bats swallow the food while swallow the food while hanging upside down ?hanging upside down ?

Peristalsis – which is the wave-like movement of muscles contracting and relaxing .

-lined with mucous membrane ;

- deeply lined with muscle that acts with peristaltic action

( to move swallowed food down to the stomach.)

Heart burn D:Heart burn D:

Symptoms :burning sensations and belching .

-discomfort or pain caused by the stomach contents travelling upwards and up our oesophagus

-not made to withstand acid

-is irritated and inflamed

(when acid from the stomach travels up into it.)

a.k.a. reflux oesophagitis.

Valve ( cardiac sphincter )Valve ( cardiac sphincter ) - keeps the stomach contents from coming back up is faulty . -thus the acid escapes and causes heart burn

Did you know ? (:Did you know ? (:heart burn has nothing to do with the heart at all . -digestive problem -related to our meals and posture-most people suffer from it one time or another in their lifetime

Cancer of oesophagus ):

-result of cell changes in the lining of the oesophagus

two main types of cancer of the two main types of cancer of the oesophagus:oesophagus:

squamous carcinoma ;

-common at the upper end of the gullet

adenocarcinoma;

-more common at the lower end,

(particularly around the junction between the (particularly around the junction between the gullet and the stomach.)gullet and the stomach.)

Often caused by – Often caused by – drinking and smoking . drinking and smoking . Due to diets as well .Due to diets as well .

Symptoms :

-difficulty in swallowing

-pain felt between the shoulder blades

-regurgitating unaltered food a few minutes after having difficulty swallowing the food.

heartburn, vomiting, and vomiting of blood

Barrett's oesophagus Barrett's oesophagus

-the lining of the gullet changes to being more like the lining of the stomach.

-an increased risk of developing cancer of the oesophagus

-often leads to heartburns .

Why is it SOOO important ? (:Why is it SOOO important ? (:

Without it ; how can you even pass food down to the stomach ?

Thus the whole digestion process won't even work .

So it is important ! (:

(It's that simple.)

Summary (:Summary (:

Key terms

Oesophagus – (e -so-pha-gus)-the muscular tube that carries food from your mouth (pharynx) to your stomach.

Peristalsis - which is the wave-like movement of muscles contracting and relaxing

Cancer of oesophagus

result of cell changes in the lining of the oesophagus

Heartburn

-discomfort or pain caused by the stomach contents travelling upwards and up our oesophagus

Our digestive system is unable to work unless the functioning of all parts . Thus ; oesophagus is equally important in the digestive system ! (:

Thanks (: Thanks (:

http://en.wikipedia.org/wiki/Esophagus#Functioning

http://www.netdoctor.co.uk/diseases/facts/oesophaguscancer.htm

http://www.mamashealth.com/stomach/hertburn.asp

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