Chapter 10: Muscle Tissue And Organization Flashcards

1
Q

What are the 5 muscle functions?

A

1) movement
2) posture
3) pump blood
4) stabilize joints
5) generate body heat

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2
Q

What are the 5 properties of muscle tissue?

A

1) excitability: able to respond to Stimuli
2) conductivity: The ability to transmit electrical events along the cell membrane
3) contractility: ability to generate tension and shorten cell length for movement
4) elasticity: ability to return to original length after movement
5) extensibility: Ability to be stretched beyond resting the length

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3
Q

What is insertion?

A

Attachment of a tendon to the moveable bone

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4
Q

What is orgin?

A

Attachment of attending to the stationary bone

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5
Q

What is the endomysium

A

Electrically insulates muscle fibres (Areolar connective, tissue and reticular fibres)

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6
Q

What is the parimysium?

A

Surrounds fascicles (muscle bundle) (made of dense, irregular connective tissue with blood vessels and nerves)

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7
Q

What is the epimysium?

A

Surrounds entire muscle (made of dense irregular connected tissue)

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8
Q

What is the agonist?

A

The primary mover
-produces a specific movement when it contracts

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9
Q

What is the antagonist

A
  • opposes the action of the agonist (biceps versus triceps)
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10
Q

What is the synergist?

A
  • assists the agonist
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11
Q

What are the 6 criteria for muscle naming?

A

1) muscle action
2) specific body region
3) muscle attachments
4) orientation of muscle fibres
5) muscle shape and size
6) muscle head/proximal tendons

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12
Q

What is autorhythmic?

A

Able to generate electrical impulses without nerve stimulation

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13
Q

What is involuntary control?

A

Autonomic nervous system (ANS) influences the rate and strength of contraction

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14
Q

How does ageing affect muscle?

A

Ageing = loss of muscle mass/function (sarcopenia)

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