Chapter 6 Homework

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23 Terms

1
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What role does acetylcholine play in muscle contraction?

Stimulate muscle contraction

2
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Which structure connects muscles to bone?

Tendons

3
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Which muscle tissue is responsible for involuntary movements and is found in the walls of hollow internal organs?

Smooth muscle

4
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Which condition is caused by overuse or injury to the tendons surrounding a joint, leading to inflammation?

Tendinitis

5
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1

K.

latissimus dorsi

2

I.

trapezius

3

E.

deltoid

4

C.

biceps brachii

5

H.

triceps

7

D.

pectoralis major

10

A.

obliques

9

J.

abdominals

11

L.

gluteus maximus

12

B.

quadriceps

16

F.

hamstring

18

G.

calf muscle

6
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What is the role of the antagonist muscle during movement?

Relaxes to allow the agonist to contract

7
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Which of the following is a common symptom of myasthenia gravis?

Muscle weakness that worsens with activity

8
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What kind of muscle is responsible for heart contractions, pumping blood throughout the circulatory system.

Cardiac muscle

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Which neurotransmitter is affected in myasthenia gravis?

Acetylcholine

10
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What is the term for the contractile unit of a muscle fiber?

Sarcomere

11
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What is the primary function of skeletal muscle?

Produce movement of bones through voluntary control

12
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Which ion is essential for muscle contraction?

Calcium

13
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Extension

Extending the knee so the leg is straight

14
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Flexion

Bending an elbow

15
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Abduction

Raising your hand straight up in the air

16
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Adduction

Moving your arm down by your side

17
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Rotation

Turning your neck

18
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Circumduction

Spinning your arm in a circular motion

19
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Pronation

Turning your hand so the palm is facing down

20
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Supination

turning your hand so the palm is facing up

21
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Opposition

Moving your thumb across your hand (towards the pinky finger)

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Inversion

Turning your foot so the sole is pointing inward

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Eversion

Turning your foot so the sole is facing outward