Brainscape's Knowledge GenomeTM

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


See full index

Anatomy > Unit 9 > Flashcards

Unit 9 Flashcards

1
Q

Where is the skeletal muscle located?

A

It is attached to bone

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

What are the characteristics of skeletal muscles?

A

Cells are long and striated, voluntary, multiple nuclei per cell

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

Where is the smooth muscle located?

A

In organs like the stomach, kidneys

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

What are the characteristics of smooth muscles?

A

Involuntary and non striated

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

Where is the cardiac muscle located?

A

Only in the heart

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

What are the characteristics of the cardiac muscle?

A

Long and branching and fit close together at junctions, involuntary, striated

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

What is the belly of the muscle?

A

Fleshy body of muscle between slender points of attachment

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

What is the fascia?

A

Layers of tough connective tissue surrounding large skeletal muscles

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

What is the endomysium?

A

A layer of connective tissue around the muscle fiber

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

What is the perimysium?

A

A layer of connective tissue that surrounds the the small bundles of fiber

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

What are fascicles?

A

Bundles of muscle fibers

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

What is the epimysium?

A

The outer layer of the fascia (outside of whole muscle)

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

What is the tendon?

A

A strong band of fibrous connective tissue that connects muscle to bone

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

What is the sarcolemma?

A

A cell membrane of a muscle fiber

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

What is the transverse tubules?

A

Point of a cell membrane that penetrate into a cell membrane for calcium to flow through

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

What is sarcoplasmic reticulum?

A

Specialized endoplasmic reticulum within the muscle fiber that release calcium ions during contraction and absorbing them during relaxation

17
Q

What are myofibrils?

A

Long cylindrical structures in each muscle fiber containing actin and myosin

18
Q

What are sarcomeres?

A

Contractile units formed of acting and myosin

19
Q

What is the sliding filament theory?

A

Muscles contract because sarcomeres shorten. Sarcomeres shorten because actin and myosin filaments slide past each other.

20
Q

How does myosin and actin cause contractions?

A

Myosin heads make contact with actin when stimulated. Cross bridges form. Myosin heads rotate, pulling actin towards the center of the sarcomere; causing the actin to slide past the myosin

21
Q

How does the muscle contract and relax using energy?

A

ATP allows the actin and myosin to interact in the presence of calcium

22
Q

Where is calcium stored?

A

In the endoplasmic reticulum, away from actin and myosin

23
Q

What is a motor nerve?

A

A nerve that carries messages from the brain or spinal cord to a muscle

24
Q

What is neuromuscular junction?

A

An area where a motor nerve meets a muscle fiber to send a message to relax or contract

25
Q

What is motor unit?

A

One nerve and all of the skeletal muscle fibers it provides. Groups of motor units work together to coordinate the contractions of a single muscle

Anatomy (8 decks)

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