test 3 Flashcards
1
Q
what term is used to describe the process of gas exchange
A
diffusion
2
Q
what is the largest vein in the body
A
vena cava
3
Q
what is the largest artery
A
aorta
4
Q
what is the smallest blood vessels
A
capillaries
5
Q
what can narrowing of arteries lead to
A
increase chance of heart disease less blood less oxygen less glucose less aerobic respiration heart works harder
6
Q
do red or white blood cells contain a nucleus
A
white blood cells
7
Q
how is having red blood cells an advantage sports men
A
more oxygen to bind to haemogoblin to be transported to the muscles which will result in less anaerobic respiration and more energy
8
Q
how does having no leaves can help reduce water loss
A
less surface area and no stomata
9
Q
what type of circulation does the heart have
A
double circulation
10
Q
does the heart have similar thickness throught
A
no
11
Q
what prevents blood from mixing
A
the septum
