Lab Heart and Cardiovascular Physiology

Question 1

How much does a heart weigh

Answer 1

2/3 of a pound

Question 2

What is the pulmonary circuit

Answer 2

Lungs and back (right)

Question 3

What’s the systemic circuit

Answer 3

Body and back (left)

Question 4

What is the myocardium made of

Answer 4

Mostly cardiac muscle

Question 5

What is the endocardium made of

Answer 5

Simple squamous epithelium

Question 6

What does pulse do

Answer 6

Increase pressure in artery during systole

Question 7

What is systolic pressure

Answer 7

The upper larger value 120

Question 8

What is diastolic pressure

Answer 8

The lower number 80

Question 9

What causes contraction

Answer 9

Systolic pressure

Question 10

What causes relaxation

Answer 10

Diastolic pressure

Question 11

What are the Korotkoff sounds

Answer 11

Sounds heard when measuring blood pressure

Question 12

What are the heart sounds

Answer 12

Lub dub valves closing

Question 13

What does the sound lub do

Answer 13

AV valves closing

Question 14

What does this sound dub do

Answer 14

Semi lunar valves closing

Question 15

What is a murmur

Answer 15

Improper valve closing

Question 16

What is an irregular fast atrial rhythm

Answer 16

Atrial flutter

Question 17

What is a more serious irregular rhythm due to tobacco and alcohol

Answer 17

Atrial fibrillation

Question 18

What is hypertension

Answer 18

 blood pressure above 140/90

Question 19

What is hypotension

Answer 19

Low blood pressure

Question 20

What regulates the cardiac conduction system

Answer 20

Medulla oblongata

Question 21

What does the SA node do

Answer 21

Generates impulses

Question 22

What do the atrioventricular bundle do

Answer 22

Connects atria to ventricles

Question 23

What do the bundle branches do

Answer 23

Conduct the impulses through the interventricular septum

Question 24

What do the Purkinje fibers do

Answer 24

Depolarize the contractile cells of both ventricles

Question 25

What is the P-wave

Answer 25

Atrial depolarization

Question 26

What is the QRS complex

Answer 26

Ventricular depolarization and atrial repolarization 

Question 27

What is the T wave

Answer 27

Ventricular repolarization

Question 28

Identify these

Answer 28

Papillary muscle
Chordae tendinae
Tricuspid valve
Pulmonary semilunar valve
Septa

Question 29

What are intercalated discs

Answer 29

What connects the cardiac muscle cells

Question 30

What are you got junctions

Answer 30

Chemical and electrical connections between cells

Question 31

What are desmosomes

Answer 31

Physical connectors

Question 32

What is the remnants of fetal circulation pattern

Answer 32

Fossa ovalis

Question 33

What is this

Answer 33

Intercalated discs

Question 34

What are these

Answer 34

Coronary arteries

Question 35

What are these

Answer 35

Cardiac veins

Question 36

What happens here

Answer 36

Depolarization of SA node atrial depolarization causes atrial contraction

Question 37

What happens here

Answer 37

Ventricular repolarization causes vetricular relaxation

Question 38

What happens here

Answer 38

Ventricles are completely polarized

Question 39

What happens here

Answer 39

Ventricular depolarization and atrial repolarization
Ventricular systole and atrial diastole

Question 40

What happens here

Answer 40

Beginning of atrial excitation to beginning of ventricular excitation
Atria contraction

Question 41

What happens at the QT interval

Answer 41

Beginning of ventricular depolarization through ventricular repolarization
One complete ventricular action potential
Ventricular contraction and relaxation