Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

Anatomy > Muscles (1) > Flashcards

Muscles (1) Flashcards

(70 cards)

Start Studying
1
Q

3 Types of muscles

A

Smooth
Skeletal
Cardiac

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

Characteristics of smooth muscle

A

Non striated
Spindle Shaped
Single nucleus

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

Characteristics of cardiac muscle

A

Striated
Branched and elongated
1-2 Nuclei

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

Characteristics of skeletal muscle

A

Striated
Long and cylindrical
Multinucleated

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

Why is the tongue good for analyzing skeletal muscle

A

fibers go in every direction

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

how far do myocytes extend

A

the length of a muscle

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

How do muscle cells become so long

A

Fusion

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

What does fusion of muscle cells result in

A

Multinucleated cells
Rapid information transfer

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

What are striations

A

lines that run perpendicular to the muscle fiber

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

What makes up striations

A

Z lines and bands
Sarcomeres

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

How do muscles contract

A

They shrink the long way and pull z lines together

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

What surrounds muscle cells

A

endomysium (reticular connective tissue)

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

A group of fibers surrounded by perimysium

A

Fasicle

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

What is perimysium

A

dense, irregular connective tissue

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

What surrounds the entire muscle

A

epimysium

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

What is epimysium

A

dense irregular connective tissue
Merges with deep fascia

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

What are tendons

A

Dense, regular connective tissue that doesn’t contract

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

What do tendons attach

A

Muscle to bone

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

What do ligaments attach

A

bone to bone

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

Internal tendons

A

tendons that run into the muscle for deeper connection

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

Tendons can not be strengthened (T/F)

A

False
They take longer to strengthen then muscles

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

Tendon Viscoelasticity

A

resist change in shape
Bring connections back to relaxed state

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

Aponeurosis

A

Broad, flat tendons

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

How are tendons protected

A

sesamoid cartilage or bone
Bursa
Synovial sheath

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
How do sesamoid cartilages or bones protect tendons
covering them (patella) pulling them away from joints (calcaneus)
26
How can a bursa protect a tendon
Cushioning with fluid
27
What is a bursa
a fluid filled pouch between bone and tendon
28
What is a synovial sheath
a fluid pocket that surrounds the tendon
29
How can a synovial sheath protect a tendon
Fluid cushioning around the whole tendon
30
Skeletal muscles are under voluntary control (T/F)
True
31
What is the main function of skeletal muscle?
attach to and move the skeleton
32
What is a secondary function of skeletal muscle
preventing movement to maintain posture or achieve complex motion
33
Skeletal muscles can stabilize joints (T/F)
true
34
Minor actions of skeletal muscle
Eyeball movement Facial expression Respiration Straining Skin Wrinkling/twitching
35
Strap muscles
parallel fibers that don't come together at origin or insertion
36
Strap muscles are strong and cause little displacement (T/F)
False they are weak and cause major displacement
37
Spindle muscles
parallel fibers that come together at origin and insertion
38
What is the power/movement combo of spindle muscles
Best of both Some power with decent movement
39
Pennate muscles
Fibers do not run parallel to origin and insertion Varying arrangements
40
Pennate muscles are capable of _____ strength and _____ movement
high minimal
41
Muscles can attach to bony and non-bony places (T/F)
True Non-bony attachments include to other muscles and CT
42
What is a muscles origin
the least movable attachment Beginning
43
What is a muscles insertion
The most moveable attachment End
44
The origin is closer to the joint that a muscle flexes (T/F)
False Insertions are closer to the joint
45
Agonists
Primary movers provide the most force for a particular movement
46
Synergists
Support the Agonist muscles Cause the same movement as the agonist
47
Antagonists
Resist agonist movement
48
An antagonist causes movement in the same direction as an Agonist (T/F)
False Antagonists cause movement in the opposite direction
49
Neutralizers
Cancel extra agonist motion Aids movement in the correct plane
50
What kind of muscle prevents adverse affects of agonists
Neutralizers
51
Fixator muscles
Anchor agonist origins
52
What kind of muscle prevents a second joint from flexing when an agonist contracts
Neutralizers
53
Extrinsic muscles
Connect 2 things Muscular connection of thoracic appendage Surround shoulder
54
Intrinsic muscles
Cause movement of things Limited to the limb
55
Synsarcosis
Links thoracic appendage to axial skeleton Strictly muscle attachment (lacks bony link)
56
Actions of the extrinsic muscles of the thoracic appendage
Draw the thoracic appendage cranially, caudally, dorsally, or ventrally
57
If a muscle causes protraction it must...
be in front of or on the acute angle side of whatever it is moving
58
Protraction
extending out
59
Retraction
pulling in
60
Rotation
muscular contraction on position causes revolution from that position
61
Elevation
Draw dorsally
62
Depression
draw ventrally
63
Extrinsic muscles act on the thorax in what way
draw scapula towards it support it ab or adduct the thoracic appendage
64
ABduction
lateral movement Away from main body
65
ADduction
medial movement Towards the main body
66
Internal rotation
medial movement
67
External rotation
Lateral movement
68
Pronation
Palm down
69
Supination
Palm up (internal rotation)
70

Anatomy (6 decks)

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