Brainscape's Knowledge GenomeTM

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


See full index

Micro Anatomy > Exam 2 Cardiac Muscle > Flashcards

Exam 2 Cardiac Muscle Flashcards

1
Q

3 Layers of cardiac muscle

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

Endothelial lining of the heart chambers

A

Endocardium

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

Where are purkinje fibers?

A

found in endocardium

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

Cardiac muscle mass

A

Myocardium

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

Formed by a single layer of flattened epithelial cells, the mesothelium, supported by connective tissue including fat

A

Epicardium

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

Which layer of the cardiac muscle covers the surface of the valves?

A

Endocardium

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

2 layers of perichardial sac

A
  1. parietal pericardium

2. visceral pericardium (same as epicardiium)

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

What is another name for cardiac muscle?

A

Myocardium

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

Which type of intercalated discs does myocardium contain?

A

Gap Junctions, Anchoring junctions

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

What type of pigment does cardiac muscle contain?

A

Lipofuscin

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

Is Myocardium Aerobic or anaerobic?

A

Aerobic

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

The outer surface of the Heart.

A

Epicardium

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

What is the cardiac skeleton?

A

Consists of 4 dense bands of fibrous CT that encircles the base of the pulmonary trunk, aorta and the AV valves

Provides structural support

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

What is the fibrous trigon?

A

triangular mass of fibrous CT that connects the aortic arterial ring and the L and R atrioventricular rings

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

What is the Os Cordis?

A

Fibrous trigon after undergoing osseous differentiation, seen mostly in cattle

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

What are the 3 tunics covering large veins?

A
  1. Tunica intima
  2. Tunica media
  3. tunica externa
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What is the tunica intima made of?

A

Endothelium, internal elastic membrane, subenothelial CT

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

What is the Tunica Media made of?

A

Smooth muscle and elastic lamellae

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

What is the Tunica Externa made of?

A

CT, principally Collagen, may contain blood vessels, nerves and capillaries

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

What is the purpose of vascular endothelium?

A
  1. Hemostasis
  2. Modulates perfusion
  3. Inflamation
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

What are the 3 tunics of the Elastic Artery?

A
  1. tunica media
  2. tunica intima
  3. tunica adventitia
22
Q

What is vasa vasorum

A

located in the tunica adventitia of arteries, it assists in supplying nutritional needs of thick tunica media

23
Q

In muscular arteries the tunica media is primarily made of_______

A

smooth muscle

24
Q

Which layer in Muscular arteries is the thickest?

A

Tunica media

25
Q

T/F Arterioles are made of cardiac muscle and have the greatest effect on blood pressure?

A

F Smooth muscle

26
Q

Mesenchymal-like cells that wrap around capillaries and venules and communicate with endothelial cells by physical contact and paracrine signaling

A

Pericytes (rouget cells)

27
Q

T/F Pericytes have their own basal lamina

A

T

28
Q

Thin walled tubules of mesencymal origin. represent the site of exchange between blood and surrounding tissue

A

Capillaries

29
Q

What are the 3 classifications of capillaries

A
  1. continuous
  2. fenestrated
  3. discontinuous
30
Q

where are continuous capillaries found?

A

Muscle, brain, bone, lung

31
Q

Where are Fenestrted c apillaries found?

A

Intestinal villi, choroid plexus

Tissues with lots of fluid exchange

32
Q

Where are Discontinuous Capillaries found?

A

Hepatic and splenic sinusoids

33
Q

A tightly coiled network of fenestrated capillaries responsible for the filtration of plasma

A

Renal corpuscule/glomerulus

34
Q

What are sinusoids?

A

Discontinued capillaries

35
Q

Very leaky vessels that contain no smooth muscle

A

Venules

36
Q

What are veins

A

Large, wide lumens with thin walls, valves may be present

37
Q

What is the thickest layer of a vein?

A

tunica adventitia

38
Q

T/F Lymphatic vessels have very thick walls b/c of high pressure?

A

Thin wall, low pressure

39
Q

______ pull endothelial cells apart so fluid may enter vessel

A

Anchoring Fibrils

40
Q

What are the 4 functions of the cardiovascular system?

A
  1. Maintenance of blood flow
  2. delivery of O2, nutrients, hormones, electrolytes
  3. removal of CO2 and other waste
  4. Maintenance of normal thermoregulation and GFR
41
Q

What is the normal vascular pattern?

A

Artery–Arteriole–Metarteriole–Capillaries–Venule–Vein

42
Q

The outer surface of the heart.

A

Epicardium

43
Q

Consists of 4 dense bands of fibrous connective tissue that enccircles the base of the pulmonary trunk, aorta, and the AV valves

A

Cardiac skeleton

44
Q

What is the function of the cardiac skeleton?

A

structural support for the heart

45
Q

What is the fibrous trigon?

A

triangular mass of fibrous connective tissue that connects the aortic arterial ring and the left and right atrioventricular ring

46
Q

What is the term for the fibrous trigon that undergoes osseous differentiation in the cow?

A

Os cordis

47
Q

What are the 3 tunics of vessesl?

A
  1. Tunica intima
  2. Tunica media
  3. Tunica adventitia
48
Q

What are the 3 functions of vascular endothelium?

A
  1. role in hemostasis
  2. Modulates perfusion
  3. Role in inflamation
49
Q

How does vascular endothelium modulate perfusion?

A

Nitric oxide(NO) relaxes and causes vasodilation and endothelin causes vasoconstriction

50
Q

How does vascular endothelium play a role in inflammation?

A

regulates the traffic of inflammatory cells by producing pro-inflammatory cytokines

Micro Anatomy (16 decks)

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