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Anatomy > Muscle Tissue > Flashcards

Muscle Tissue Flashcards

1
Q

Muscle tissue is of 2 types. __________ and ___________. fill in the blanks.

A

striated and non striated

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2
Q

name the 2 types of striated muscle tissue found in the body.

A

skeletal and cardiac muscle tissue.

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3
Q

name the 1 type of non striated muscle tissue found in the body.

A

smooth muscle.

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4
Q

what is the Functional Classification of Skeletal Muscles?

A

1.The axial and appendicular
muscle
2.Visceral Striated Muscle

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5
Q

what is Visceral Striated
Muscle?

A

muscular tissues that are found in the internal organs of the body.

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6
Q

cardiac contractions are involuntary. true or false?

A

true

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7
Q

what are satellite cells in skeletal muscle?

A

Satellite cells are the primary stem cells in adult skeletal muscle and are responsible for postnatal muscle growth, hypertrophy and regeneration

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8
Q

name the 3 Types of Connective Tissue in Skeletal Muscles.

A

There are three types:
1. Endomysium - muscle fiber
2. Perimysium - muscle fascicle
3. Epimysium - entire muscle

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9
Q

endomysium is Loose connective tissue that
surrounds individual muscle fibers. true or false.

A

true

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10
Q

perimysium contains Collagen and elastic fibers surrounding a group of muscle fibers called a fascicle. true or false?

A

true.

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11
Q

epimysium is Dense regular connective tissue surrounding entire muscle. true or false?

A

true

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12
Q

what are the types of skeletal muscle
fibers?

A
  1. Red fibers
  2. Intermediate fibers
  3. White fibers
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13
Q

which type of fiber is found in marathon runners?
1. Red fibers
2. Intermediate fibers
3. White fibers

A

red fiber

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14
Q

which type of fiber is found in hockey players and swimmers?
1. Red fibers
2. Intermediate fibers
3. White fibers

A

intermediate fibers

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15
Q

which type of fiber is found in the weight lifters and sprinters?
1. Red fibers
2. Intermediate fibers
3. White fibers

A

white fibers

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16
Q

what is a triad?

A

A complex of 2 terminal cistern and an intervening T tubule constitutes a triad. Triads are important in initiating muscle contraction.
TRIAD = 2 TERMINAL CISTERN + TRANSVERSE TUBULE.

17
Q

myofilament —-> myofibril —–> muscle fiber ——> fascicle —-> muscle. is this order correct?

A

yes

18
Q

what is the basic unit of a muscle fiber?

A

sarcomere

19
Q

I band consists of?

A

I-band: actin filaments

20
Q

A band consists of?

A

A-band: myosin filaments which may overlap with actin filaments

21
Q

H zone consists of?

A

H-band (zone): zone of myosin filaments only

22
Q

Z disc consists of?

A

Z-line (disk): zone of apposition of actin filaments belonging to two neighbouring sarcomeres

23
Q

M line consists of?

A

M-line: band of connections between myosin filaments

24
Q

Actin is thin filament. true or false?

A

true

25
Q

myosin is thick filament. true or false?

A

true

26
Q

nebulin is an accessory protein. is that correct?

A

yes

27
Q

Each contraction cycle consist of five stages
1. Attachment
2. Release
3. Bending (Twisting)
4. Force Generation
5. Reattachment
is this order correct?

A

yes

28
Q

what are the components which form neuromuscular junction?

A
  • The neuromuscular junction is formed by :
    1. End of motor neuron axon (axon terminal)
    2. Synaptic cleft
    3. The motor end
    plate of a muscle
29
Q

what is myasthenia gravis?

A

myasthenia gravis is an autoimmune disease caused by the reduced number of functional ACh receptor sites.

30
Q

give the 3 symptoms of myasthenia gravis.

A

smoothing out of forehead, eyebrow droop, droop of angle of mouth

31
Q

cardiac muscle fibers are autorythmic. what do you mean by that?

A

can generate a muscle impulse without being stimulated

32
Q

what are intercalated discs?

A

The intercalated disc represents the attachment site between cardiac muscle cells.

33
Q

what are purkinje fibers?

A

cardiac conducting fibers

Anatomy (6 decks)

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