Ch. 42 Circulation And Gas Exchange Flashcards
1
Q
Three basic components of a circulatory system:
A
- A Circulatory fluid
- A set of interconnecting tubes
- A muscular pump (heart)
2
Q
Vocab:
Open circulatory system
A
The circulatory fluid bathes organs directly
3
Q
Vocab:
Closed circulatory system
A
Blood is confined to vessels and is distinct from the interstitial fluid.
4
Q
What do arteries do?
A
Arteries carry blood away from the heart to organs throughout the body.
5
Q
Vocab:
Arterioles
A
Small vessels that convey blood to the capillaries.
6
Q
Vocab:
Capillaries
A
Microscopic vessels with very thin, porous walls.
7
Q
Vocab:
Capillary beds
A
- network of capillaries
- infiltrate each tissue, passing within a few cell diameters of every cell in the body
8
Q
Vocab:
Atria
A
The chambers that receive blood entering the heart
9
Q
Vocab:
Ventricles
A
The chambers responsible for pumping blood out of the heart
