Week 1: Naming Skeletal Muscles

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24 Terms

1
Fascicles

Bundles of muscle fibers wrapped together by connective tissue

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2
Agonist
The muscle that produces the most force during a specific movement.
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3
Antagonist
The muscle that opposes or undoes the action of the agonist.
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4
Fixator
A muscle that stabilizes the bone being acted upon by the agonist.
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5
Rectus

Means parallel to the midline

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6
Transverse

Means perpendicular to the midline

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7
Oblique

Means diagonal to the midline

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8
Maximus

Means largest

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9
Minimus

Means smallest

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10
Flexor

A muscle that decreases the joint angle

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11
Extensor

A muscle that increases the joint angle

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12
Abductor

A muscle that moves a bone away from the midline

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13
Adductor

A muscle that moves a bone closer to the midline

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14
Biceps

Muscle with two origins

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15
Triceps

Muscle with three origins

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16
Quadriceps

Muscle with four origins

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17
Diaphragm
The major muscle of inhalation that depresses during inhalation.
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18
Gastrocnemius
A muscle that plantarflexes the ankle and flexes the knee.
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19
Sphincter

A muscle that decreases the size of an opening

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20
Tensor

A muscle that makes a body part rigid

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21
Supinator

A muscle that turns the palm anteriorly

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22
Pronator

A muscle that turns the palm posteriorly

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23

Muscle fibers

is an individual muscle cell that contracts to produce movement.

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24

Muscle fibrils

are the smaller strands within muscle fibers that contain the contractile proteins actin and myosin

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