CHAPTER 37:CHAPTER 37:

Circulatory and Respiratory

Systems

Circulatory and Respiratory

Systems

Alana and Haley

What is the Circulatory System?

What is the Circulatory System?

It consists of:• The Heart• Blood Vessels• Blood

It transports blood throughoutthe body.

It consists of:• The Heart• Blood Vessels• Blood

It transports blood throughoutthe body.

QuickTime™ and aTIFF (Uncompressed) decompressor

are needed to see this picture.

heartBlood vessels

blood

Alana and Haley

Heart and Blood Pressure

Heart and Blood Pressure

• Systemic Circulation• Pulmonary Circulation

• Heart pumps bloodthrough thebody usingcontractions• Heart is aboutthe sizeof your fist

• Systemic Circulation• Pulmonary Circulation

• Heart pumps bloodthrough thebody usingcontractions• Heart is aboutthe sizeof your fist

QuickTime™ and aTIFF (Uncompressed) decompressor

are needed to see this picture.

Alana and Haley

Blood VesselsBlood Vessels

• Usually, oxygen rich bloodthrough arteries• Usually, oxygen poor bloodThrough veins

• Usually, oxygen rich bloodthrough arteries• Usually, oxygen poor bloodThrough veins QuickTime™ and a

TIFF (Uncompressed) decompressorare needed to see this picture.

Alana and Haley

Blood PlasmaBlood Plasma

• Made of 90% water• 10% dissolved gasses• Contains salts, nutrients,

enzymes, hormones, waste products, and plasma proteins.

• Made of 90% water• 10% dissolved gasses• Contains salts, nutrients,

enzymes, hormones, waste products, and plasma proteins.

Alana and Haley

Blood CellsBlood Cells• Red blood cells transportoxygen• White blood cellsfight infection• Platelets helpwith blood clotting

• Red blood cells transportoxygen• White blood cellsfight infection• Platelets helpwith blood clotting

QuickTime™ and aTIFF (Uncompressed) decompressor

are needed to see this picture.

Alana and Haley

The Lymphatic

System

The Lymphatic

System• A network of vesselsthat collect fluids lostby the blood• Then, it returns it to theCirculatory system

• A network of vesselsthat collect fluids lostby the blood• Then, it returns it to theCirculatory system

QuickTime™ and aTIFF (Uncompressed) decompressor

are needed to see this picture.

Alana and Haley

What is the Respiratory System?

What is the Respiratory System?

• Consists of nose, larynx, trachea, lungs, bronchi,and alveoli

• Consists of nose, larynx, trachea, lungs, bronchi,and alveoli

QuickTime™ and aTIFF (Uncompressed) decompressor

are needed to see this picture.

Alana and Haley

Gas ExchangeGas Exchange

• Occurs by diffusionacross membrane ofan alveolus and capillary

• Occurs by diffusionacross membrane ofan alveolus and capillary

QuickTime™ and aTIFF (Uncompressed) decompressor

are needed to see this picture.Blue=oxygen

Green=carbon dioxide

Alana and Haley

BreathingBreathing

• When you inhale,diaphragm contracts

• When you exhale,diaphragm relaxes

• When you inhale,diaphragm contracts

• When you exhale,diaphragm relaxes

QuickTime™ and aTIFF (Uncompressed) decompressor

are needed to see this picture.

Alana and Haley