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HUBS191 2024 > Lecture 10 - Form and action at joints > Flashcards

Lecture 10 - Form and action at joints Flashcards

1
Q

What are anatomical levers?

A

Bones

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2
Q

What are anatomical pivots/fulcrums?

A

Joints

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3
Q

What are anatomical applied forces?

A

Muscle contraction

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4
Q

How many classes of levers are there?

A

3

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5
Q

What is anatomical load?

A

The weight of what is being moved

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6
Q

What type of lever is Fulcrum between force and load

A

First

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7
Q

What type of lever is Force between fulcrum and load

A

Third

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8
Q

What type of lever is Load between fulcrum and force

A

Second

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9
Q

What type of lever is head nodding?

A

First

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10
Q

What type of lever is plantarflexion?

A

Second

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11
Q

What type of lever is flexion at the elbow joint?

A

Third

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12
Q

What is parallel arrangement of muscle fibres?

A

Fibres arranged vertically between muscle tendons/attachments

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13
Q

What is pennate arrangement of muscle fibres?

A

Fibres arranged obliquely/slanted between muscle tendons/attachments

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14
Q

What are pros and cons of pennate muscle fibres?

A

Good for tension, has low ROM

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15
Q

What are pros and cons of parallel muscle fibres?

A

Less tension, high ROM

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16
Q

Which percentage of resting length can fibres shorten?

A

50%

17
Q

What three types of muscle form determines function?

A

Length, number and arrangement of muscle fibres

18
Q

What determines cross-sectional area? (CSA)

A

Greater number of fibres = greater CSA = greater tension

19
Q

What are the three different ways muscle can contract?

A

Isometric, concentric and eccentric

20
Q

What is isometric movement?

A

Force exerted by the muscle is the same as the load, NO MOVEMENT

21
Q

What is concentric movement?

A

Shortening of muscle

22
Q

What is eccentric movement?

A

Lengthening of muscle

HUBS191 2024 (7 decks)

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