Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Bio 166 > Chapter 19 - Heart > Flashcards

Chapter 19 - Heart Flashcards

You may prefer our related Brainscape-certified flashcards:
Biology 101 flashcards
1
Q

Provides the force to pump blood through the blood vessels

A

The heart

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

It is about the size of your fist

A

The heart

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

This rest on your diaphragm

A

The heart

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

How many times does a heartbeat every day?

A

100,000 times

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

How much does a heartbeat in an average lifetime?

A

2.5 billion times

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What side pumps blood through an estimate of 60,000 miles of blood vessels?

A

The left side of the heart

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

How many liters of blood is in our body?

A

5 Liters

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

How many times does blood passes through our heart in a day?

A

2800 times

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Mediastinum

A

Where is our heart located in?

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is mediastinum?

A

It is the anatomical region extending from the sternum to the vertebral column, the first rib and between the lungs

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What else does the region of the mediastinum hold?

A

Contains the heart, esophagus and trachea

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Where is the apex of the heart?

A

It is at the tip of the left ventricle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Where is the base of the heart?

A

It is the wide superior portion

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Where does the vessels enters and exits

A

At the base of the heart where the wide, superior portion is

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Where does the right border of the heart faces?

A

It faces the right lung

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Where does the left border of the heart faces?

A

It faces the left lung

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What is another name for the left border of the heart?

A

Pulmonary border

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What is the covering of the heart?

A

Pericardium

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

What is the pericardium of the heart?

A

A double layered membranes surrounding and protecting the heart

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

What does the pericardium do for the heart?

A

It confines the heart while still allowing free movement

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

What are the layers of the Pericardium?

A
  1. Fibrous pericardium
  2. Serous pericardium
  3. Pericardial fluid
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

What is fibrous pericardium?

A

It is the tough, inelastic, dense irregular connective tissues

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

What does fibrous pericardium do?

A

It prevents over stretching, protection and anchorage

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

What is serous pericardium?

A

A thinner, more delicate membrane and contains a double layer in itself

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

What are the double layer of serous pericardium?

A
  1. Parietal layer

2. Visceral layer

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

What does the parietal layer do?

A

It fuses to the fibrous pericardium

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

What is another name for the visceral layer?

A

Epicardium

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

What does the pericardial fluid do?

A

Reduces friction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

How does the pericardial reduce friction of the heart?

A

It secretes fluids into the pericardial cavity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

What is the layers of the heart wall?

A
  1. Epicardium
  2. Myocardium
  3. Endocardium
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
31
Q

What is the external layer of the heart wall?

A

Epicardium

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
32
Q

What is the epicardium also call?

A

Visceral layer of the pericardium

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
33
Q

What is the epicardium?

A

It is the smooth, slippery texture to the outermost surface

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
34
Q

What is the middle layer of the heart?

A

Myocardium

35
Q

What does the myocardium mainly contain?

A

95% of cardiac muscle

36
Q

What is the inner layer of the heart?

A

Endocardium

37
Q

What is the endocardium?

A

Smooth lining for chambers of the heart, valves and continuous with lining of large blood vessels

38
Q

What does the vessel of the heart do?

A

Return blood to the heart

39
Q

What are the vessels conveying blood away from the heart?

A
  1. Pulmonary Trunk

2. Aorta

40
Q

What are the vessels that return blood to the heart?

A
  1. Superior and inferior vena cavae

2. Pulmonary veins

41
Q

What are teh Pulonary trunk?

A

The right and left pulmonary arteries

42
Q

How many atria is in our chambers?

A

2

43
Q

What are the chambers of our heart?

A
  1. Atria

2. Ventricles

44
Q

What is the atria for?

A

It is for the receiving chambers

45
Q

What is the ventricles for?

A

It si for the pumping chambers

46
Q

How many ventricles does the chamber have?

A

2

47
Q

What happens in the atria?

A

The auricles increase the capacity

48
Q

What is the grooves of our heart?

A

Sulci

49
Q

What does the sulci do?

A

Contain coronary blood vessels

50
Q

Where does the right atrium receives blood from?

A
  1. Superior/inferior vena cavae

2. Cornoary sinus

51
Q

Where does the left atrium receives blood from?

A

The pulmonary vein

52
Q

What is the pectinate muscles?

A

It forms ridges on the interior surface

53
Q

What does interatrial septum have?

A

Fossa ovalis

54
Q

What is Fossa ovalis?

A

The remnant of foramen ovale

55
Q

Where does blood pass through on the right side?

A

The right atrioventricular valve in to the right ventricle

56
Q

What is another name for right atrioventricular valve?

A

Tricuspid

57
Q

Where does blood pass through on the left side?

A

The left antrioventricular valve into the left ventricle

58
Q

What is another name for the left antrioventricular valve?

A

Bicuspid or mitral

59
Q

What are the characteristics of the R&L ventricles?

A
  1. Are the discharging chambers
  2. Separated by interventricular septum
  3. Contains 2 types of muscle
  4. Blood leaves the right ventricle and passes through the pulmonary semilunar valve
  5. Blood leaves the left ventricle and passes through the aortic semilunar valve
60
Q

What are the two muscles of the R&L ventricles?

A
  1. Trabeculae carneae

2. Papillary muscles

61
Q

What is the trabeculae carneae?

A

It is the ridges formed by rased bundles of cardiac muscle fibers

62
Q

What is the papillary muscle?

A

It anchors the chordae tendineae of the AV valves

63
Q

When blood leaves the right ventricles, where does it passes?

A

Through the pulmonary semilunar valve

64
Q

When blood leaves the left ventricles, where does it passes?

A

Through the aortic semilunar valve

65
Q

What does the right ventricle do?

A

It pumps blood to the lungs

66
Q

What does the left ventricle do?

A

It pums blood to the body

67
Q

Why does the left ventricle work harder?

A

SO that it can maintainthe same rate of blood flow as the right ventricle

68
Q

What is characteristic of the Myocardial thickness?

A

It has a thin walle datria that deliver blood under less pressure to ventricles.

69
Q

What happens when there is a shorter distances to pump blood?

A

The shorter distances, produce lower pressure with less resistance

70
Q

What happens when there is a longer distance to pump blood?

A

The longer distances, produce higher pressure with more resistance

71
Q

Is there any valves at the entrance of the atria?

A

No

72
Q

What are the artioventricular valves?

A

They are the tricuspid (Rt) and Bicuspid (Lt)

73
Q

Where does the artioventricular valves?

A

They lie between the atria & ventricles

74
Q

When does the artioventricular valves open?

A

When the artria contract

75
Q

What prevents back flow of blood into the artria?

A

Atrioventricular valves

76
Q

What are the semilunar valves?

A
  1. Polumonary valves

2. Aortic valves

77
Q

Where is the polumonary valve?

A

Between the right ventricle & polumonary trunk

78
Q

Where is the aortic valve?

A

Between the left ventricle & aorta

79
Q

When does the semilunar valve open?

A

When the ventricles contract

80
Q

What prevents backflow of blood into the ventricles?

A

Semilunar vlaves

81
Q

What is Valvular Stenosis?

A

Narrowing of the valve opening

82
Q

What is Mitral valve prolapse?

A

Valve bulges up into the atrium

83
Q

What is mitral atresia?

A

No valve opening

84
Q

What is valvular regurgitation?

A

When blood leaks in the wrong direction because one or more heart valves closes improperly

Bio 166 (4 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions