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Anatomy and kinanthropometry > Muscle slide Q's > Flashcards

Muscle slide Q's Flashcards

1
Q

What are the functions of muscle tissue

A
  • Movement
  • Stabilization
  • Organ volume
  • Moving substances through the body
  • Heat
  • Storage of food
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2
Q

what are the properties of muscle tissue

A
  • Electrical excitability
  • Contractility
  • Extensibility
  • Elasticity
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3
Q

Smooth muscle features

A
  • Spindle
  • Single Nuclei
  • Not striated
  • Involuntary
  • E.g. intestine wall
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4
Q

Cardiac muscle features

A
  • Branching
  • Single Nuclei
  • Visible striations
  • Involuntary
  • E.g. heart
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5
Q

Skeletal muscle features

A
  • Elongated
  • Multiple Nuclei
  • Visible striations
  • Voluntary
  • E.g. skeletal muscle
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6
Q

Muscle composition

A
  • Water = 75%
  • Protein = 20%
  • Salts and other substances = 5%
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7
Q

Order of the skeletal muscle layers

A
  • Muscle
  • Fascicles
  • Individual muscle fibres
  • Myofibrils
  • Actin and myosin (myofilaments)
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8
Q

what covers the fascicles?

A

Perimysium

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9
Q

what covers the individual muscle fibres

A

Endomysium and the sarcolemma

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10
Q

What covers the entire muscle

A

Epimysium

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11
Q

What does the sarcoplasmic reticulum store

A

Ca2+

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12
Q

Why does the sarcolemma have T Tubules

A

Allow the muscle action potential to spread to all parts of the muscle quickly.

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13
Q

What is fascia

A

It is a sheet or band of fibrous connective tissue that surrounds muscles and other organs of the body

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14
Q

What are langer’s lines

A

Skin creases that reflect the fibre orientation of the fascia and muscles that lie below

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15
Q

What is the thin filament structure made up of

A

Actin, troponin and tropomyosin.

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16
Q

What is the thick filament made up of

A

Myosin

17
Q

What does tropomyosin do?

A

Blocks the ‘binding’ site at rest

18
Q

What does troponin do?

A

Supporting structure for tropomyosin and changes shape when in contact with a calcium ion therefore the actin and myosin can bind and contract the muscle.

19
Q

What muscle fibre angle produces the most force?

A

short, slanted fibers therefore large diameter

20
Q

What muscle fibre angle produces the most velocity?

A

Long, straight fibers therefore small diameter.

21
Q

How many actin filaments surround a myosin filament?

A

6

22
Q

What axes goes through the belly button?

A

Sagittal

23
Q

What axes goes through both iliac crests?

A

Frontal

24
Q

What axes goes through the top of your head downwards?

A

Longitudinal

25
Q

What is it called when you move your ankle inwards and outwards?

A

Inversion Eversion

26
Q

Name the layers of the muscles

A

1- Skeletal muscle

2- Fascicle

3- Muscle Fiber (cell)

4- Myofibril

5- Filament

27
Q

Name the parts of the muscle

A

1- Satellite cell

2- Sarcolemma

3- Myofibril

4- Sarcoplasm

5- Muscle fibre

28
Q

Name the part of the muscle

A

1- Terminal cisterns

2- T tubule

3- Mitochondrion

4- Sarcolemma

5- Thick filament

6- Thin filament

7- Myofibril

8- Sarcoplasmic reticulum

9- Myofibrils

29
Q

Name the parts of the muscle

A

1- T tubule

2- Sarcolemma

3- Thick filament

4-Thin filament

5- Terminal cisterna

6- Sarcoplasmic rectium

7- Triad

30
Q

Name the parts of the muscle

A

1- Epimysium

2- Perimysium

3- Endomysium

4- Deep fascia

31
Q

Name the parts of the myofibril

A

1-Actin

2- Troponin

3- Tropomyosin

4- Myosin binding site

32
Q

Name the parts of the myofibril

A
  1. Z discs
  2. Thin filament
  3. Thick filament
  4. M line
  5. Thin filament
  6. Z disc
  7. I band
  8. Zone of overlap
  9. Sarcomere
  10. H zone
  11. A band
33
Q

Name the planes of movement

A

a-Sagittal

b- Frontal

c- Transverse

34
Q

Name the axes

A

a- Frontal

b- Sagittal

c- Longitudinal

Anatomy and kinanthropometry (15 decks)

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