circulatory system Flashcards
1
Q
not overly important but what does the circulatory stem do
A
- body internal highway system
- components
- provides links between body systems
nutrients in, waste out
2
Q
3 main components
A
heart, blood vessels, and blood
3
Q
what are the 3 main things blood is good for transporting
A
- oxygen to cells + nutrients
- carbon dioxide + waste out
- hormones + chemical to cells
4
Q
what does blood maintain 2
A
- pH , water, ions
- internal body temp
5
Q
when you scrape yur knee what does blood do
A
clot
6
Q
if your sick what does blood do
A
fight disease or infections
7
Q
how much of blood is plasma
A
55%
8
Q
what is it mostl made of 91%
A
water
9
Q
what does it dissolve 2
A
- nutrients (glucose)
- ions
- hormones
- clotting factors
10
Q
what is RBC called fancy
A
erythrocytes
11
Q
how are RBC shaped
A
biconcave discs
12
Q
what is special about RBC
A
no nucleus
13
Q
why are RBC concave
A
higher surface area
14
Q
why do RBC not have nuclues
A
flexible, more heamogoblins hehehe
15
Q
have RBC ever had a nucleus
A
gets rid of it as matures
