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Anatomy and Physiology > The Muscular System > Flashcards

The Muscular System Flashcards

1
Q

Helps the body move from one position to another

A

The muscular system

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2
Q

What are the three types of muscles?

A

-Skeletal
-Smooth
-Cardic

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3
Q

How many skeletal muscles are there in the body?

A

There are about 600 skeletal muscles and are usually found attached to the bone.

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4
Q

What are the functions of the skeletal muscles?

A

Contract in order to move muscles

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5
Q

Skeletal muscles are also known as?

A

Voluntary or Striated muscles

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6
Q

Allows the contraction of muscles resulting in motion. More specifically, they are the motor units of the skeletal muscle

A

Sarcomeres

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7
Q

Repeating units of a sarcomere makes up a?

A

Muscle fiber

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8
Q

What are Sarcomeres composed of?

A

Actin and Myosin

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9
Q

What are the structures of Sarcomeres?

A

Z-line
M-lin
H-band
I-Band
A-band

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10
Q

A sarcomere structure wherein the Myosin heads are not present

A

H-band

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11
Q

A sarcomere structure where the actin is connected to

A

Z-line

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12
Q

A sarcomere structure that acts as an attachment point to the thick filaments

A

M-Line

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13
Q

A sarcomere structure that consists of thin filaments that do not overlap with thick filaments

A

I-bands

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14
Q

A sarcomere structure consisting of thick and thin filaments including the myosin head

A

A-band

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15
Q

This is the arrangement of the different components in the sarcomere and its collective functions in order to induce muscular contractions

A

Sliding Filament Model

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16
Q

This triggers contraction

A

ATP hydrolysis

17
Q

This is when a Myosin head extends in order to attach to the binding sites on actin

A

Cross bridge cycle

18
Q

Muscular actions

A

Agonist
Synergist
Antagonist

19
Q

It is movement through contractions

A

Agonist

20
Q

This aids the agonist in producing movement

A

Synergist

21
Q

This opposes the actions of an agonist

A

Antagonist

22
Q

Other types of muscular actions

A

Adductors, abductors, flexors, levators, depressors, and rotators

23
Q

Brings a body part towards the body

A

Adductors

24
Q

Brings body part away from the body

A

Abductors

25
Q

Muscles that decrease the angle of a body part

A

Flexors

26
Q

Increases the height of a body part

A

Levators

27
Q

The muscles that decreases height

A

Depressors

28
Q

Allows the twisting of a body part

A

Rotators

Anatomy and Physiology (19 decks)

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