Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

Human Histology > Muscle Tissue > Flashcards

Muscle Tissue Flashcards

1
Q

It is characterized by the ability to contract or move upon stimulation.

A

Muscle Tissue

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

Muscle tissue is characterized by the ability to ________ or move upon stimulation.

A

contract

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

Muscle tissue is composed of specialized cells that optimize the universal property of ___________.

A

contractility

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

The muscle cells are of ____ origin.

A

mesodermal

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

Muscle cells differentiate by a gradual process of ________.

A

cell lengthening

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

Muscle cells differentiate by a gradual process of cell lengthening and abundant synthesis of __________.

A

myofibrilar proteins (actin and myosin)

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

Two contractile proteins

A

Actin and Myosin

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

Movement is generated through the interaction of _________.

A

Actin and Myosin

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

It is the cytoplasm of the muscle cells.

A

Sarcoplasm

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

It is the smooth endoplasmic reticulum of the muscle.

A

Sarcoplasmic Reticulum

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

It is the cell membrane and external lamina of the muscle.

A

Sarcolemma

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

Which Muscle Type?

Multi-nucleated cells

A

Skeletal Muscle

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

TRUE OR FALSE.
Skeletal muscle LACK cross-striations.

A

False

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

Which Muscle Type?

Quick, forceful, voluntary contractions

A

Skeletal Muscle

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

Which Muscle Type?

Branched cells bound to one another

A

Cardiac Muscle

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

Which structure is responsible for joining two structures together in a cardiac muscle?

A

Intercalated discs

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

Which Muscle Type?

Involuntary, vigorous, and rhytmic contractions

A

Cardiac Muscle

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

Which Muscle Type?

Fusiform cells with no striations

A

Smooth Muscle

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

Which Muscle Type?

Slow, involuntary contractions

A

Smooth Muscle

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

Other names for skeletal muscle

A

Voluntary or Striated Muscle

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

Which is responsible for the striations of skeletal muscle?

A

Actin and Myosin

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

It is responsible for the movement of skeleton.

A

Skeletal Muscle

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

It is responsible for the movement of organs such as the globe of the eyes, and tongue.

A

Skeletal Muscle

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

It consists of muscle fibers, which are long, cylindrical, and multi-nucleated cells.

A

Skeletal Muscle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Diameter of skeletal muscle
10 - 100 um
26
During ________, mesenchymal myoblasts fuse, forming myotubes with many nuclei.
embryonic muscle development
27
During embryonic muscle development, ________________ fuse, forming myotubes with many nuclei.
mesenchymal myoblasts
28
During embryonic muscle development, mesenchymal myoblasts fuse, forming ________ with many nuclei.
myotubes
29
They proliferate and produce new muscle fibers following muscle injury.
Satellite Cells
30
They also originated from myoblasts, but failed to differentiate nor fuse.
Satellite Cells
31
Which type of tissue is present in all types of muscle?
Connective Tissue
32
The layers of connective tissue is seen well in ___________.
Skeletal Muscle
33
An external sheath of dense irregular connective tissue, which surrounds the entire muscle.
Epimysium
34
Which kind of connective tissue is present in the **Epimysium**?
Dense Irregular
35
**TRUE OR FALSE.** The epimysium carries large nerves, blood vessels, and lymphatics.
True
36
A layer of thin connective tissue that immediately surrounds each bundle of muscle fibers (fasicle).
Perimysium
37
The nerves, blood vessels, and lymphatics penetrate the ____ to supply nutrient to each fasicle.
Perimysium
38
Which type of connective tissue is present in the **Perimysium**?
Thin Connective Tissue
39
It contains a delicate layer of reticular fibers surrounding the external lamina of individual muscle fibers.
Endomysium
40
Which type of connective tissue is present in the **Endomysium**?
Reticular Fibers (tissue)
41
A layer of dense irregular connective tissue overlying the epimysium.
Deep Fascia
42
Which type of connective tissue is present in the **Deep Fascia**?
Dense Irregular
43
All of the interstitial tissue are met (joined) by ________.
Myotendinous junctions
44
Dark bands are called _______.
A or Anisotrophic Bands
45
Light bands are called _______.
I or Isotrophic Bands
46
________ is highly organized, containing primarily long cylindrical filament bundles called myofibrils.
Sarcoplasm
47
Sarcoplasm is highly organized, containing primarily long cylindrical filament bundles called _________.
myofibrils
48
Which band is bisected by a Z disc?
Isotrophic Band
49
It bisects the isotrophic band.
Z Discs
50
The repetitive functional (structural) unit of striated muscle.
Sarcomere
51
________ extends from Z disc to another Z disc.
Sarcomere
52
It transmits mechanical process along the interstitial connective tissue.
Collagen
53
Components of Thick Filaments
Myosin
54
Thick filaments are found on the ________.
A band
55
Components of Thin Filaments
* F-actin * Troponin * Tropomyosin
56
Thin filaments are found on the ________.
I band
57
Two Regulatory Proteins
Troponin and Tropomyosin
58
What are the 3 subunits of Troponin?
* Trop I (TnI) * Trop C (TnC) * Trop T (TnT)
59
A subunit that regulates actin-myosin interaction.
Trop I (TnI)
60
A subunit that binds calcium.
Trop C (TnC)
61
A subunit that attaches to tropomyosin.
Trop T (TnT)
62
It contains the binding site for myosin.
G-actin
63
When myosin heads bind to g-actin, it forms __________.
transcient cross bridges
64
____ catalyzes energy release when myosin head binds to g-actin.
ATP
65
_____ consists of the portion of the thin filaments which do not overlap the thick filaments in the other band.
I bands
66
_____ contain both thick filaments and overlapping portions of thin filaments.
A bands
67
Why are A bands darker?
Because they contain both thick filaments and overlapping portions of thin filaments.
68
It binds thin filaments anchored to Z discs.
Alpha-actinin
69
It binds thick filaments anchored to Z discs.
Titin
70
The largest protein in our body which has a scaffholding and elastic properties.
Titin
71
The lighter zone located in the center of each A band or sarcomere.
H zone
72
It bisects the H zone.
M line
73
M line contains ______.
Myomesin
74
A myosin-binding protein
Myomesin
75
It holds the thick filaments in place.
Myomesin
76
Myomesin contains the enzyme _______.
creatine kinase
77
It catalyzes the transfer of phosphate groups.
Creatine Kinase
78
A storage for high-energy phosphate, which can be transferred to ADP when ATP is utilized.
Phospho-creatine
79
The soul for muscle contraction.
ATP
80
It functions in Ca2+ sequestration during muscle contraction.
Sarcoplasmic reticulum
81
They trigger the release of Ca ions.
**Triad** - Transverse Tubules (T-tubules) and Terminal Cisternae
82
Long, fingerlike invaginations of the cell membrane encircling each myofibril near the aligned A- and I-band
Transverse Tubules
83
These are expanded structures adjacent to each T-tubule.
Terminal Cisternae

Human Histology (12 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions