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Human Bio > Muscular System > Flashcards

Muscular System Flashcards

0
Q

8 characteristics of skeletal muscle

A
  1. Fibers
  2. Striated
  3. Many nuclei/ fibers
  4. Many mitochondria
  5. Arranged in bundles
  6. Mostly protein
  7. Attached to bone
  8. Voluntary
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1
Q

Posture

A

Alignment of body parts

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2
Q

Tendon

A

Connects muscle to bone

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3
Q

Myofibral

A

Elongated contractive threads in muscle

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4
Q

Fasicle

A

Bundle of fibers

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5
Q

Nerve supply

A

Together w the skeletal muscle fibers it supplies is a motor unit

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6
Q

Fibrosis

A

Development of excess fibrous connective tissue

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7
Q

Origin

A

Bone that does not move when muscle contracts

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8
Q

Insertion

A

Bone that moves when muscle contracts

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9
Q

Prime mover

A

Main muscle used in movement

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10
Q

Antagonist

A

Works opposite prime mover

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11
Q

Synergist

A

Assists prime mover

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12
Q

6 ways we name muscles

A
  1. Action
  2. Direction of fibers
  3. Location
  4. Number of divisions
  5. Shape
  6. Points of attachment
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13
Q

Functions of muscle system

A
  1. Heat production
  2. Movement
  3. Posture
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14
Q

Sarcolemma

A

Cell membrane of muscle fiber

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15
Q

Sarcoplasm

A

Cytoplasm of muscle fiber

16
Q

Sarcoplasmic reticulum

A

Analogous but not identical to ER of cells other than muscle fibers

17
Q

Striation

A

Cross bands

18
Q

Actin

A

Thin filament

19
Q

Myosin

A

Thick filament

20
Q

Contraction

A

Thick and thin filaments combine forming cross bridges

21
Q

Epimysium

A

Fibrous connective sheath that envelops each muscle

22
Q

Perimysium

A

Extensions of epimysium, portioning each muscle into bundles of fibers

23
Q

Endomysium

A

Extension of perimysium between individual muscle fibers

24
Q

Aponeurosis

A

Broad flat sheet of fibrous connective tissue

25
Q

Tendon sheath

A

Tubes of fibrous connective tissue that enclose certain tendons

26
Q

Deep fascia

A

Layer of dense fibrous connective tissue under superficial fascia

Human Bio (5 decks)

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