Heart

Question 1

Flow of blood through the heart

Answer 1

LA, LV, Aorta, body/tissue, vena cava, RA, RV, pulmonary artery, lungs, pulmonary veins, LA

Question 2

What happens to RBC in lungs?

Answer 2

RBC gives up CO2 and accepts oxygen

Question 3

What type of blood is on each side of the heart?

Answer 3

Left side- oxygenated
Right side- deoxygenated

Question 4

Cardiac Output (CO)

Answer 4

The amount of blood the heart pumps over time.

Question 5

CO for average adult

Answer 5

5 liters per minute (all the blood in the body)

Question 6

Stroke volume

Answer 6

Amount of blood the ventricles pump with each beat

Question 7

Heart Rate

Answer 7

Beats per minute

Question 8

CO formula

Answer 8

CO= SV * HR

Question 9

What does exercise do to SV and HR

Answer 9

Increases both

Question 10

What regulates heart rate?

Answer 10

Cardiac center of medulla oblongata

Question 11

Parts of cardiac center and their functions

Answer 11

sympathetic-speeds up heart rate. uses norepinephrine.

parasympathetic- slows heart rate. Uses vagus nerve and acetylcholine.

Question 12

What affects stroke volume?

Answer 12

Preload
contractility
afterload

Question 13

Preload

Answer 13

volume of blood in the ventricles.

Question 14

Contractility

Answer 14

how hard the ventricles contract for preload.

Question 15

Afterload

Answer 15

the pressure in the great arteries that the ventricles have to push against

Question 16

What happens to stroke volume if preload increases?

Answer 16

Increases

Question 17

What happens to stroke volume if contractility increases?

Answer 17

Increases

Question 18

What happens to stroke volume if afterload increases?

Answer 18

Decreases