Wize High School Grade 11 Biology Textbook > Human Physiology: The Circulatory System
Circulation and the Human Body
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The Circulatory System
- made of three main parts
- the pump (heart)
- vessels (arteries, arteriols, capillaries, venules, veins)
- circulatory fluid
- functions to maintain homeostasis, transport solutes & cells, transport heat and transmit force
- two circuits (double circulation)
- (1) pulmonary circuit, i.e. lungs and (2) systemic circuits are separate, allowing for different pressures
Watch Out!
- In the pulmonary circuit, the deoxygenated blood is in the arteries and the oxygenated blood is in the veins.
- In the systemic circuit, the oxygenated blood is in the arteries and the deoxygenated blood is in the veins
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What are the two circuits of the circulatory system and what are each of their functions?
Pulponary circulation - main function is to pick up oxygenated blood from the lungs
Systemic circulation - main function is to deliver oxygenated blood.
Both systems are used to move other materials around the body such as hormones and glucose.
Practice: The Heart
Which statement is FALSE about the heart?
Practice: Deoxygenated Blood
Which of the following carries deoxygenated blood away from the heart?
Practice: Blood Flow Through the Heart
Select the correct flow of blood through the heart from deoxygenated blood to oxygenated blood: