7.2 Overview of the Circulatory System Flashcards
Why do multicellular organisms need transport systems?
- Diffusion distance too large
- Higher metabolic rate
- Need rapid supply of nutrients and oxygen
What type of circulatory system do mammals have?
Closed double
What does a closed circulatory system mean?
Blood is contained in blood vessels
What does a double circulatory system mean?
Blood passes through heart twice per circuit
What are the two main divisions of the mammalian circulatory system?
Systemic and pulmonary
Where does oxygenated blood go in the systemic circulatory system?
Aorta to body tissues
What blood vessel delivers blood to the kidneys?
Renal artery
What blood vessel collects deoxygenated blood from the kidneys?
Renal vein
Where does deoxygenated blood return through in the systemic circulatory system?
Vena cava
Where does deoxygenated blood go in the pulmonary circulatory system?
Through what and where to
Pulmonary artery to lungs
Where does oxygenated blood return to in the pulmonary circulatory system?
Through what and where from
Pulmonary vein from lungs
