1.2.2: Makeup of a Muscle

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Makeup of muscles, Rules of muscles, what tendons and ligaments connect

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17 Terms

1
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<p>A</p>

A

Tendon

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<p>B</p>

B

Epimysium

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<p>C</p>

C

Perimysium

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<p>D</p>

D

Fascicle

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<p>E</p>

E

Endomysium

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<p>F</p>

F

Muscle Fiber/ Cell

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<p>G</p>

G

Myofibril

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Muscle Rule 1

Muscles must have at least two attachments and must cross at least one joint.

9
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Muscle Rule 2

Muscles always “pull” and get shorter.

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Muscle Rule 3

The attachment that moves is known as the insertion and the attachment that remains stationary is known as the origin

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Muscle Rule 4

Muscles that decrease the angle between ventral surfaces of the body are known as flexors. Muscles that increase the angle between ventral surfaces of the body are known as extendors.

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Muscle Rule 5

Muscles work in opposing pairs

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Muscle Rule 6

Muscle fibers point to the attachments and show the direction of pull

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What do tendons connect?

They connect bone to bone

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What do ligaments connect?

Muscle to bone (Achilles tendon)

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What is the origin of a muscle?

It is the connection to the bone that does NOT move with the contraction of the muscle 

<p>It is the connection to the bone that does NOT move with the contraction of the muscle&nbsp;</p>
17
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What is the insertion of a muscle?

It is the connection to the bone that DOES move with the contraction of the muscle

<p>It is the connection to the bone that DOES move with the contraction of the muscle</p>