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Quiz #3Quiz #3

16-3 to 16-716-3 to 16-7

How many bones are in the How many bones are in the human body?human body?

106106 206206 256256 306306

How many bones are in the How many bones are in the human body?human body?

106106 206206 256256 306306

Overview of body systems:Overview of body systems: MuscularMuscular: The body system that gives your body the : The body system that gives your body the

power to move.power to move. SkeletalSkeletal: protect your internal organs and gives body : protect your internal organs and gives body

shape.shape. CirculatoryCirculatory: moves essential supplies to all of the : moves essential supplies to all of the

body's cells.body's cells. RespiratoryRespiratory: The system that supplies the body with : The system that supplies the body with

constant oxygen and rids the body of carbon dioxide.constant oxygen and rids the body of carbon dioxide. NervousNervous: Your body's message and control system.: Your body's message and control system. DigestiveDigestive: The body system that converts food into fuel : The body system that converts food into fuel

and energy.and energy. EndocrineEndocrine: The chemical communication system : The chemical communication system

responsible for the fast growth during the teen years.responsible for the fast growth during the teen years.

Circulatory SystemCirculatory System

Circulatory SystemCirculatory System

The circulatory system:The circulatory system:• allows the body to move materials allows the body to move materials from one place to another.from one place to another.• is made up of the heart (MAIN part), a is made up of the heart (MAIN part), a network of blood vessels, and blood.network of blood vessels, and blood.

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Circulatory SystemCirculatory System

Two main jobs:Two main jobs:- carry food, water, oxygen to cellscarry food, water, oxygen to cells- remove waste from cellsremove waste from cells

Blood VesselsBlood Vessels

Blood travels the body through a Blood travels the body through a system of tubes called system of tubes called blood vesselsblood vessels..

Three kinds of blood vessels:Three kinds of blood vessels:– ArteriesArteries: carry oxygen-rich blood : carry oxygen-rich blood

from the heart to the rest of the bodyfrom the heart to the rest of the body– CapillariesCapillaries: tiny blood vessels that : tiny blood vessels that

connect arteries and veinsconnect arteries and veins– VeinsVeins: return waste-rich blood to the : return waste-rich blood to the

heart; veins have thinner walls and look heart; veins have thinner walls and look blue through the skinblue through the skin

Respiratory SystemRespiratory System

Respiratory SystemRespiratory System

The respiratory system is responsible The respiratory system is responsible for providing the body with the oxygen for providing the body with the oxygen it needs.it needs.

MAIN job:MAIN job:– Supplies the body with constant Supplies the body with constant

oxygen and rids the body of carbon oxygen and rids the body of carbon dioxide.dioxide.

Order of the Respiratory SystemOrder of the Respiratory System

1.1. Nose/mouthNose/mouth - Blood vessels, cilia, - Blood vessels, cilia, and mucus moisten, warm, and filter and mucus moisten, warm, and filter the air you breathethe air you breathe

2.2. PharynxPharynx (throat)(throat)3.3. LarynxLarynx (voice box) (voice box) 4.4. Trachea Trachea (windpipe)(windpipe)

– EpiglottisEpiglottis - - Flap of muscle that prevents Flap of muscle that prevents food/liquids from entering the trachea food/liquids from entering the trachea

Order of the Respiratory SystemOrder of the Respiratory System

5. Bronchi5. Bronchi (bronchial tubes) - tube (bronchial tubes) - tube that leads from the trachea to the lung, that leads from the trachea to the lung, main passagewaymain passagewayLungs – the main organ of the system– the main organ of the system6. Bronchioles 6. Bronchioles - - tiny tubes inside the tiny tubes inside the lungs that branches off the main lungs that branches off the main bronchi/bronchial tubesbronchi/bronchial tubes

AlveoliAlveoli - - tiny clusters of air sacs in each lung tiny clusters of air sacs in each lung through which oxygen enters and carbon through which oxygen enters and carbon dioxide leaves the blooddioxide leaves the blood

DiaphragmDiaphragm

The diaphragm is a large muscle at The diaphragm is a large muscle at the bottom of your chest that the bottom of your chest that separates the abdomen from the separates the abdomen from the area around the lungs.area around the lungs.

IT HELPS IT HELPS

YOU BREATHEYOU BREATHE!!

Nervous SystemNervous System

Two parts:Two parts:

Central Nervous System Central Nervous System (CNS): (CNS): Includes brain and spinal cordIncludes brain and spinal cord

Peripheral Nervous System Peripheral Nervous System (PNS): (PNS): nerves that connect the CNS to the nerves that connect the CNS to the rest of the body.rest of the body.– Messages are carried by tiny electrical Messages are carried by tiny electrical

charges called “charges called “impulsesimpulses”” This system is PROTECTED by the This system is PROTECTED by the

skeletal system.skeletal system.

Digestive SystemDigestive System

Order of the digestive system Order of the digestive system and jobs:and jobs:

1.1. MouthMouth: Teeth tear and grind, saliva moistens: Teeth tear and grind, saliva moistens

2.2. EsophagusEsophagus: muscular tube (remember : muscular tube (remember peristalsis?)peristalsis?)

3.3. StomachStomach: lining made of mucus to prevent : lining made of mucus to prevent acid from burning through itacid from burning through it

4.4. Small intestineSmall intestine: MOST digestion takes place : MOST digestion takes place here, nutrients absorbedhere, nutrients absorbed

5.5. Large intestine/colonLarge intestine/colon: lining absorbs much : lining absorbs much of the liquid contained in the waste materialof the liquid contained in the waste material

6.6. Rectum/anusRectum/anus: exits the body: exits the body

Supporting organsSupporting organs

LiverLiver: produces salty fluid that : produces salty fluid that breaks down fat called bilebreaks down fat called bile

PancreasPancreas: makes other enzymes : makes other enzymes like insulin to aid in digestion like insulin to aid in digestion (regulates glucose levels)(regulates glucose levels)

Gall bladderGall bladder: stores bile and : stores bile and releases it to the small intestine releases it to the small intestine when needed.when needed.

Endocrine SystemEndocrine System

Endocrine SystemEndocrine System

The endocrine system is a chemical The endocrine system is a chemical communication system that controls communication system that controls many body functions.many body functions.

GlandGland: a group of cells or organs : a group of cells or organs that produces or secretes hormonesthat produces or secretes hormones

The pituitary gland signals other The pituitary gland signals other endocrine glands to produce endocrine glands to produce hormones when needed.hormones when needed.

STUDY!!!STUDY!!!