Chapter 3

Question 1

what describes the number of heart beats per minute and the amount of blood pumped per beat?

Answer 1

cardiac output

Question 2

what is the term that refers to the amount of blood pumped out of the heart with each contraction?

Answer 2

stoke volume

Question 3

arterioles branch out into vessels known as?

Answer 3

capillaries

Question 4

what is it called when water and chemicals are exchanged between the blood and tissues

Answer 4

capillaries

Question 5

deoxygenated blood is pumped from the right ventricle to the lungs through which of the following vessels?

Answer 5

pulmonary arteries

Question 6

what may be the best measure of cardiorespiratory fitness?

Answer 6

maximal oxygen consumption

Question 7

what is the name of the small terminal branch of an artery, which ends in the capillaries?

Answer 7

artriole

Question 8

what is the name of the vessels that transport blood from capillaries toward the heart?

Answer 8

veins

Question 9

what is a contrast between skeletal muscle and cardiac muscle?

Answer 9

skeletal muscles are under voluntary control whilst cardiac muscles are unvoluntary

Question 10

after leaving the left ventricle, blood enters which structure?

Answer 10

aorta

Question 11

heavy breathing results in an increase in the activity level of which of the following secondary respiratory muscles?

Answer 11

scalenes

Question 12

resting oxygen consumption is approximately how many mL of oxygen per kilogram body weight per minute?

Answer 12

3.5 mL

Question 13

what are the lower two chambers of the heart called?

Answer 13

ventricles

Question 14

what are the upper two chambers of the heart called?

Answer 14

atria

Question 15

what does are the steps to the pathway for oxygenated (red) blood?

Answer 15

blood moves into atrium, down the left ventricle, then pumped to rest of body

Question 16

what are the pathway steps for deoxygenated (blue) blood?

Answer 16

moves from the right atrium, down the right ventricle, then to the lungs

Question 17

what are the three primary functions of blood?

Answer 17

transportation (waste, nutrients, water), regulation (body temp., regulating acid balance), and protection (blood clotting, immunity)

Question 18

what is the sinoatrial (SA) node?

Answer 18

the “pacemaker” of the heart because it initiates the heartbeat

Question 19

what are the smaller chambers located superiorly on either side of the heart that gather blood returning to the heart much like a reservoir?

Answer 19

atria

Question 20

which section of the heart gathers oxygenated rich blood coming from the lungs?

Answer 20

the left atrium