Transcript Circulatory System

Circulatory System
Function
• Circulate blood, nutrients and oxygen to the cells of
the body.
• Removes waste from body
• Regulates body
temperature
Structures
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Heart
Veins
Capillaries
Arteries
Structures Con’t.
• Heart – pumps blood to the body
– Has 4 sections or chambers:
• Right Atria – collects de-oxygenated blood (blue) from
the body via the vena cava
• Right Ventricle – pumps de-oxygenated blood (blue) to
the heart via the pulmonary arteries
• Left Atria – collects oxygenated (red) blood from the
lungs by way of the pulmonary veins
• Left Ventricle – pumps the oxygenated blood (red) to
the body via the aorta
Note: When referring to the left and right side of the heart
it is in respect to the body, not when you are looking at it.
• Arteries – blood vessels that carry oxygenated
blood away from the heart(usually depicted as
red)
• Veins – blood vessels that carry de-oxygenated
blood to the heart (usually depicted as blue)
• Capillaries – tiny blood vessels that connect
veins to arteries(this is where nutrients,
oxygen, and waste products diffuse into and
out of the blood)
Parts of the Circulatory
System
• Divided into 2 parts:
– Pulmonary Circulation – takes blood from the
heart to the lungs and back
– Systemic Circulation – takes blood to the body and
back
Respiratory System
Function
• Supplies the blood with oxygen to be sent to
the cells of the body
• Removes carbon
dioxide from blood
for exhalation
Structures
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Mouth
Nose
Trachea - windpipe
Lungs
– Bronchi – 2 tubes inside lungs that passes air to
the alveoli
– Alveoli – tiny air sacs that oxygenate the blood
and release CO2 (capillaries help here)
• Diaphram – a muscle that helps the lungs
inhale air by contracting (located under the rib
cage)
Ticket-Out
• Describe how
the Circulatory
and Respiratory
systems work
together.