Heart

Question 1

what is the pericardial membrane composed of

Answer 1

fibrous pericardium and serous pericardium

Question 2

visecral layer of the heart (covers)

Answer 2

serous pericardium

Question 3

secretes thin lubricating fluid

Answer 3

serous pericaridium

Question 4

space in between 2 pericardial membrane

Answer 4

pericardial cavity

Question 5

muscle tissue of the heart

Answer 5

myocardium

Question 6

inner lining of the heart

Answer 6

endocardium

Question 7

where is the apex of the heart?

Answer 7

the inferior part

Question 8

where does most muscle mass of the heart belong to?

Answer 8

the ventricles

Question 9

ear like flaps of the atria

Answer 9

auricles

Question 10

inferior pumping chambers

Answer 10

ventricles

Question 11

superior chambers of the heart

Answer 11

atria

Question 12

what are the large vessels attached to the heart ?

Answer 12

superior/inferior vena canva, pulmonary trunk, pulmonary veins, aorta.

Question 13

right atrium is composed of

Answer 13

superior/inferior vena canva

Question 14

the right ventricle

Answer 14

pulmonary trunk

Question 15

left atrium is composed of

Answer 15

pulmonary veins

Question 16

the aorta is in the

Answer 16

left ventricle

Question 17

The branching and reconnecting many coronary arteries

Answer 17

anastomosis

Question 18

drain blood from the heart muscle and lead back to the cornary sinus before feeding into right atrium

Answer 18

cardiac veins

Question 19

what is likely to develop blockage in some people which is medically significant

Answer 19

coronary arteries

Question 20

shunts blood around blockage

Answer 20

bypass surgery

Question 21

prevent back flow and improve effiency

Answer 21

valves

Question 22

parachute-like”valves between each atrium and ventricle and prevent blood from being pushed back up intot he atria.

Answer 22

AV Valves

Question 23

What happens when pressure builds under AV valves

Answer 23

they inflate (like a parachute)

Question 24

the _____ of AV valves closes of the opening between atria and ventricles

Answer 24

inflating

Question 25

pocket valves at the base of the aorta and pulmonary trunk.

Answer 25

semilunar valves

Question 26

what is the cardiac cycle?

Answer 26

dynamic muscle contraction driven changes by pressure and volume

Question 27

which chambers fill with blood as the heart relaxes?

Answer 27

all chambers fill with blood

Question 28

2 parts of ventricle filling

Answer 28

passive ventricular filling and atrial contraction

Question 29

blood is sucked in as the heart expands. when the heart relaxes and all four chambers fill passively

Answer 29

passive ventricular filling

Question 30

Atria contract pushing another 20-30 percent into the ventricles

Answer 30

atrial contraction

Question 31

true or false: the heart does not need neurons to contract.

Answer 31

true

Question 32

true or false: the heart is able to contract by itself once per second

Answer 32

true

Question 33

true or false: the nervous system has no influence on heart rate

Answer 33

false

Question 34

true or false: the nervous system is directly responsible for causing heart contractions

Answer 34

false

Question 35

The amount of blood the ventricles pump with each contraction is

Answer 35

Stroke volume

Question 36

One of the biggest factors in stoke volume

Answer 36

venous return

Question 37

Amount of blood entering the heart from the great veins

Answer 37

venous return

Question 38

What is the easiest way to influence cardiac output?

Answer 38

Modifying heart rate