CV system

Question 1

Respiratory system order

Answer 1

mouth/nose
trachea
lungs
bronchi
bronchioles
alveoli

Question 2

how alveoli and capillaries are made for their function

Answer 2

large surface area to aid gas exchange
one cell thick to help gas exchange
touching each other for fast diffusion (short pathway)

Question 3

process of diffusion in lungs

Answer 3

gases move fro area of high to loe concentration
o2 out of alveoli
co2 into alveoli

Question 4

inspiration

Answer 4

chest and ribs expand
diaphragm flattens
intercostal muscles contract
lower pressure inside lungs

Question 5

espiration

Answer 5

breathing muscles relax
pressure in lungs increases

Question 6

additional assister of inspiration

Answer 6

sternocleidomastoid
pectorals

Question 7

inspiratory reserve volume

Answer 7

additional air forcibly inhaled after inspiration of normal tidal volume

Question 8

espiratory reserve volume

Answer 8

additional air that can be forcibly exhaled after espiration of normal tidal volume

Question 9

tidal volume

Answer 9

normal volume of air breathed in or out during normal breath at rests

Question 10

residual volume

Answer 10

volume of air that remains in lungs after maximal expiration too

Question 11

features of capillaries

Answer 11

one cell thick to allow rapid diffusion

Question 12

features of veins

Answer 12

has valves to prevent backflow
carry deoxygenated blood
thin walled

Question 13

vasodilation

Answer 13

increasing diameter of small arteries to increase blood flow to tissues

Question 14

features of arteries

Answer 14

narrow lumen
thick walls to withstand pressure
carry oxygenated red blood cells

Question 15

vasoconstriction

Answer 15

reducing diameter of small arteries to reduce blood flow to tissues