Lab: The Heart

Question 1

Components of the cardiovascular system

Answer 1

Heart
Arteries
Veins
Capillaries
Blood

Question 2

The heart is within the _________ (space/area)

Answer 2

mediastinum

Question 3

The heart is within the _______ cavity

Answer 3

thoracic

Question 4

The heart is between the _____

Answer 4

lungs

Question 5

The heart is superior to the ________

Answer 5

diaphragm

Question 6

The heart is anterior to the ______ _______

Answer 6

Vertebral column

Question 7

The heart is in the ________ sac

Answer 7

pericardial

Question 8

The heart pumps blood to and from cells through…

Answer 8

systemic circulation

Question 9

The heart pumps blood to and from the lungs through…

Answer 9

pulmonary circulation

Question 10

The heart provides blood supply to itself through…

Answer 10

coronary circulation

Question 11

Ligamentum arteriosum before birth is called…

Answer 11

ductus arteriosus

Question 12

Sulci are grooves on the surface of the heart containing…

Answer 12

coronary blood vessels and fat

Question 13

Coronary sulcus encircles the heart and marks the boundary between…

Answer 13

the atria and ventricles

Question 14

Anterior interventricular sulcus marks the boundary between…

Answer 14

the ventricles anteriorly

Question 15

Atria beat…

Answer 15

together

Question 16

Ventricles beat…

Answer 16

together

Question 17

How does blood flow?

Answer 17

Pressure differences

Question 18

“double pump”

Answer 18

Pulmonary and systemic

Question 19

Which chambers must generate the most force?

Answer 19

Ventricles - they pump a much larger difference

Question 20

Heart layers

Answer 20

Endocardium
Myocardium
Pericardium

Question 21

Within the pericardium is the…

Answer 21

serous pericardium - epicardium and parietal pericardium
Fibrous pericardium

Question 22

The fibrous pericardium is attached to the…

Answer 22

diaphragm

Question 23

Interatrial septum contains…

Answer 23

Fossa ovalis
Coronary sinus

Question 24

The pectinate muscles are mostly in the…

Answer 24

right atrium

Question 25

Fetal heart structures

Answer 25

Formen ovale Ductus arteriosus

Question 26

Formen ovale

Answer 26

Allows blood to pass from the right atrium to left atrium Bypass lungs Fetal

Question 27

Ductus arteriosus

Answer 27

Connects pulmonary trunk with the aorta Bypass lungs Fetal

Question 28

Chambers

Answer 28

Atria + Ventricles

Question 29

Valves

Answer 29

Tricuspid Biscupid Pulmonary Aortic

Question 30

Contraction of a heart chamber means it is...

Answer 30

depolarized

Question 31

Repolarization of a heart chamber means it is...

Answer 31

relaxed

Question 32

The sino-atrial node is responsible for...

Answer 32

atrial depolarization/contraction

Question 33

What is responsible for the "lub" sound?

Answer 33

Atrioventicular valves (tri+bi)

Question 34

Semilunar valves

Answer 34

Aortic and pulmonary

Question 35

Atrioventricular valves

Answer 35

Tricuspid and Biscupid

Question 36

What is responsible for the "dup" sound?

Answer 36

Semilunar valves (aortic + pulmonary)

Question 37

Open pulmonic and aortic valves

Answer 37

systole

Question 38

Closed pulmonic and aortic valves

Answer 38

diastole

Question 39

What are the three circulations?

Answer 39

Pulmonary Systemic Coronary

Question 40

Intrinsic autorhythmicity

Answer 40

Parasympathetic nervous system slows your heart rate

Question 41

Electrical activity pathway

Answer 41

1. SA node 2. AV node 3. AV bundle (bundle of his) 4. R+L bundle branches 5. Subendocardial conducting network (purkinje fibers)

Question 42

P wave representation

Answer 42

Atrial depolarization

Question 43

QRS complex representation

Answer 43

Ventricular depolarization

Question 44

T wave representation

Answer 44

Ventricular repolarization

Question 45

What does an ECG not show?

Answer 45

ECG does not show force of contraction

Question 46

Contraction of the ventricles

Answer 46

Systole

Question 47

Relaxation of the ventricles (filling)

Answer 47

Diastole

Question 48

Abnormally fast heart beat

Answer 48

Tachycardia

Question 49

Abnormally slow heart beat

Answer 49

Bradycardia

Question 50

Amount of blood pumped out per systole

Answer 50

Stroke volume

Question 51

Blood output per minute

Answer 51

Cardiac output

Question 52

Volume of blood in ventricle before ejection

Answer 52

End-diastolic volume

Question 53

Volume of blood in ventricle after ejection

Answer 53

End-systolic volume

Question 54

Which layer is both a part of the pericardium and the heart wall?

Answer 54

visceral layer of the serous pericardium

Question 55

Which blood vessels deliver blood to the right atrium?

Answer 55

Superior and inferior vena cava

Question 56

Which blood vessels deliver blood to the left atrium?

Answer 56

Pulmonary veins

Question 57

Which valves prevent back flow into the ventricles?

Answer 57

Semilunar valves (pulmonary and aortic)

Question 58

Which valves prevent back flow into the atria?

Answer 58

Tricuspid and Biscupid AV valves

Question 58

Which valves prevent back flow into the atria?

Answer 58

Tricuspid and Biscupid AV valves