Muscular system study Flashcards

You may prefer our related Brainscape-certified flashcards:
1
Q

Muscle fiber

A

Usually has a single motor end plate. Muscle fibers and their associated connective tissues are flexible but can tear if overstretched.

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

Myosin

A

A protein that, with actin, forms the filaments that contract muscle fibers

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

Actin

A

A protein that forms filaments of the protein myosin, contracting muscle fibers

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

Sarcomeres

A

The structural and functional units of a myofibril

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

Sliding Filament Model

A

Includes all the events involving muscle contraction, and it gets its name from the way sarcomeres shorten. Thick and thin filaments do not change length. Rather, they slide past one another, with the thin filaments sliding toward the center of the sarcomere from both ends.

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

Fast Twitch

A

fatigable

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

Slow Twitch

A

fatigue-resistant

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

Peristalsis

A

Rhythmic waves of muscular contraction in the walls of certain tubular organs.

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

Origin

A

The end of a muscle that attaches to a relatively immovable part

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

Insertion

A

The end of a muscle attachment to a movable part

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

Describe the sliding filament model

A

The sliding filament model is a model of a muscle cell and it includes the following structures: Sarcoplasmic Reticulum, Transverse tubules, and Myofibril (contains thick and thin myofilaments, actin and myosin). It also shows a Z-line disk, a Sarcolemma, a Sarcomere, and a nucleus. A myofibril is divided into sarcomeres. Each sarcomere is an individual contractile unit.

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