Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

5.13 Neuronal Communication > 13.9 Voluntary and Involuntary Muscles > Flashcards

13.9 Voluntary and Involuntary Muscles Flashcards

(60 cards)

Start Studying
1
Q

What are the three types of muscle in the body?

A

Skeletal (voluntary) , Cardiac, Involuntary (smooth)

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

What type of control is skeletal muscle?

A

Conscious control (voluntary)

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

What type of control is cardiac muscle?

A

Involuntary

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

What is the fibre appearance of skeletal muscle?

A

Striated

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

What is the fibre appearance of cardiac muscle?

A

Specialised striated (striped pattern isn’t as strong as skeletal muscle)

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

What is the fibre appearance of involuntary muscle?

A

Non-striated

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

What is the contraction speed of skeletal muscle?

A

rapid, used for speed and strength
(but some as slow, which are those used for endurance and posture)

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

What is the contraction speed of cardiac muscle?

A

Intermediate

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

What is the contraction speed of involuntary muscle?

A

slow

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

What is the length of contraction skeletal muscle?

A

short

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

What is the length of contraction cardiac muscle?

A

Intermediate

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

What is the length of contraction involuntary muscle?

A

can remain contracted for a relatively long time

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

How quickly does skeletal muscle fatigue?

A

Fatigue quickly

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

How quickly does cardiac muscle fatigue?

A

Does not fatigue

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

How quickly does involuntary muscle fatigue?

A

Doesn’t fatigue

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

Where is involuntary muscle found?

A

Walls of hollow internal organs
eg. gut, blood vessels, stomach, digestive tract

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

Where is cardiac muscle found?

A

Walls of heart only

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

What is the arrangement of skeletal muscles?

A

Regularly arranged so muscle contracts in one direction

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

What is the arrangement of cardiac muscle?

A

Cells branch and interconnect resulting in simultaneous contraction

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

What is the arrangement of involuntary muscle?

A

No regular arrangement, different cells contract in different directions

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

What is the structure of skeletal muscle?

A

-Striated, striped as contains cross striations
-Fibres are tubular and multi-nucleated
-Cross striations are regular

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

What is the structure of cardiac muscle?

A

-Striations but fainter than in skeletal muscle
-Fibres are branched and uninucleated
-Made of muscle fibres connected by intercalated discs which have low electrical resistance so nerve impulses pass easily between cells
-Fibres are branched to allow nerve impulses to spread quickly

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

What is the structure of involuntary muscle?

A

-Non-striated
-Fibres are spindle shaped with pointed ends and uninucleated (each fibre has one nucleus)

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

Which type of muscle is this?

A

Skeletal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Which type of muscle is this?
Skeletal
26
Which type of muscle is this?
Cardiac
27
Which type of muscle is this?
Involuntary
28
Which type of muscle is this?
Skeletal
29
Which type of muscle is this?
Skeletal
30
Which type of muscle is this?
Cardiac
31
Which type of muscle is this
Involuntary
32
Label this muscle fibre
33
What is the sarcolemma?
The plasma membrane of the muscle fibre cells
34
What are transverse (T) tubules?
Parts of the sarcolemma that fold inwards across the muscle fibres and stick into the sarcoplasm
35
What is the purpose of transverse (T) tubules?
Help to send electrical impulses throughout the whole scaroplasm, so that the whole of the fibres receives the impulse to contract as the same time
36
What is the purpose of the sarcoplasmic reticulum?
Stores and releases calcium ions required for muscle contraction
37
Why do muscle fibres contain lots of mitochondria?
To provide ATP needed for muscle contraction
38
Label this diagram of a muscle fibre
39
What are myofibrils?
Long cylindrical organelles found in muscle which are made of protein and specialised for contraction
40
What are the two protein filaments myofibrils are made up of?
Actin, myosin
41
Why are myofibrils lined up parallel to each other?
To provide maximum force when they all contract together
42
What is Myosin?
Thick filament, long rod-shaped fibres with bulbous heads that project to one side
43
What is actin?
Thinner filament, two strands twisted around each other
44
Label which protein filament in which in this transverse section through a myofibril
Myosin - thicker, pink Actin - thinner, yellow
45
What do the dark bands of a myofibril contain?
Thick myosin filaments and some overlapping thin actin filament
46
What are dark bands knows as?
A-bands
47
What do the light bands of myofibrils contain?
Only thing actin filaments
48
What are light bands also known as?
I-bands
49
What is the Z-line?
The line found at the entire of each I-band (light band)
50
What is involuntary muscle controlled by?
Autonomic nervous system
51
What is the distance between each Z-line called?
A sarcomere
52
What is the H-zone?
The light coloured region found in the centre of each dark bands, where only myosin filaments are present
53
What happens to the sarcomere when the muscle contracts?
shortens
54
What happens to the H-zone when the muscle contracts?
decreases
55
Label this myofibril
56
Label this myofibril
57
Label this myofibril
58
Label this myofibril
59
What is the M-line?
The middle of each sarcomere
60
Label the features of this skeletal muscle

5.13 Neuronal Communication (10 decks)

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