Brainscape's Knowledge GenomeTM

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


See full index

MSK II > Histo 2 skeletal muscle and nerve tissue > Flashcards

Histo 2 skeletal muscle and nerve tissue Flashcards

1
Q

Key features of skeletal muscle

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

What is the arrangement/ orginization of cells in muscle?

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

Muscle cell

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

Fascicle

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

What is a muscle comprised of?

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

Where are the nucleus located in muscle fibers?

A

On the edges

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

What is myosin made of?

what is myosin attached to?

and by what?

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

What is actin made up of?

what determines its length?

what makes up functional part of actin?

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

components of a sarcomere?

A
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q
A
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Muscle contraction

A

Sarcoplasmic reticulum releases Ca. Ca binds the troponin. causing a shift in tropomyosin. Actin binding sites accesible to myosin heads

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

in contraction what gets closer together?

what slides on what?

Does anything shorten or lengthen?

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

What are the types of skeletal muscle?

how do they differ?

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

parts that are part of the electrical impulse in muscle

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

What is a triad made up of?

A

T tubule + 2 terminal cisternae (1 on each side)

connected by end feet

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

Triad

17
Q

What is skeletal muscle innervated by?

A

a-motor neurons from the anterior horn of the spinal cord

18
Q

The neuromuscular junction

How many nerves innervate muscle fibers?

A
19
Q

Neuromuscular junction to contraction?

A

Acetylcholine released bind sodium channel. this causes signal to be relayed down sarcolemma until it reaches a T-tubule

20
Q
A

neuromuscular junctions

21
Q

explain the reflexive response to overstretching of a muscle

A

neuromuscular spindle apparatus

  • intrafusal muscle fibers overstretched.
  • Type 1a fibers sense the stretch
  • A-motor and G-motor neurons receive signal from 1a and cause muscle to shorten
22
Q

What type of muscle fiber contract the muscle?

what type senses length and rate of change?

A

Extrafusal muscle fibers

Intrafusal muscle fibers

23
Q

What are type 1a sensory nerve fibers?

what are a-motor and g-motor?

A
24
Q
A
25
Q

What is nissle substance?

A

abundant rER w/in the cytoplasm of soma

26
Q

what is the organization of a nerve?

A
  • Axon covered by endoneurium
  • bundled into group called fascicle covered by perineurium
  • bundled into a nerve covered by a epineurium
27
Q
A
28
Q

Types of neurons?

A
29
Q
A
30
Q

Myelination

Is myelination multi or single layered?

A
31
Q

What wraps around one axon?

what wraps around many?

A

One= schwann cell

Multi= oligodendrocyte

MSK II (20 decks)

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