Biomedical Science 1 > Muscles > Flashcards

Muscles Flashcards

(28 cards)

Study These Flashcards
1
Q

What are 4 functions of muscles?

A
  1. Movement
  2. Maintain posture
  3. Stabilise joints
  4. Generate heat
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What are the 3 muscle types/

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

What is hypertrophy?

A

Enlargement

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

What are 3 main histological features of skeletal muscle?

A
  1. Myofibres have cross striations
  2. Myofibres are long, unbranched and multinucleated
  3. Nuclei occur at periphery of fibre
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is the hierarchy of skeletal muscle in descending order?

A
  1. Muscle
  2. Muscle fascicle
  3. Muscle fibre
  4. Myofibril
  5. Myofilaments
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Name 2 myofilaments

A
  1. Actin

2. Myosin

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

Name 3 types of CT of skeletal muscles

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

What is epimysium?

A

Connective tissue which surrounds the outside of an entire muscle

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

What is perimysium?

A

Connective tissue which surrounds the outside of a muscle fascicle

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

What is endomysium?

A

Connective tissue which surrounds the outside of a muscle fibre

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

What is the I band?

A

Composed of actin myofilaments anchored to the Z-line

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

What is the A band?

A

Overlap of actin anchored to the Z-line and myosin anchored to the M-line

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

What is a sarcomere?

A

Distance between two Z-lines

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

What is the only band that remains the same length when a muscle contracts?

A

A band

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

What is the sarcolemma?

A

Plasma membrane of a muscle fibre

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

What are transverse tubules?

Study These Flashcards
A

Tubular invaginations of the sarcolemma

17
Q

What is the function of transverse tubules?

Study These Flashcards
A

Carry a wave of depolarisation into the muscle fibre

18
Q

What is the sarcoplasm?

Study These Flashcards
A

Cytoplasm of muscle fibre

19
Q

Name 4 structures found in the sarcoplasm

Study These Flashcards
A
  1. Myofibrils
  2. Mitochondria
  3. Sarcoplasmic reticulum
  4. Myoglobin
20
Q

Where is cardiac muscle found?

21
Q

Name 3 histological features of cardiac muscle

Study These Flashcards
A
  1. Striated
  2. Branched cells joined by intercalated discs
  3. Nucleus positioned centrally in the fibre
22
Q

What are intercalated discs?

Study These Flashcards
A

Adhesion specialisations comprising fascia adherens and nexus

23
Q

Where is smooth muscle found?

Study These Flashcards
A

Tubular organs

24
Q

Name 3 histological features of smooth muscle

Study These Flashcards
A
  1. Non-striated
  2. Spindle shaped cells
  3. Corkscrew shaped nucleus
25
What do myofilaments attach to in smooth muscle?
Dense bodies
26
How do dense bodies connect to each other?
Intermediate filaments
27
What are the equivalent of T-tubules in smooth muscle?
Caveolae
28
Where are most organelles stored in smooth muscle?
Poles of the nucleus
Biomedical Science 1
flashcards
Decks in class (19)
# Cards
Brainscape helps you reach your goals faster, through stronger study habits.
© 2026 Bold Learning Solutions. Terms and Conditions