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Ch 9 Exam-Muscular System

Total questions: 25

Worksheet time: 13mins

Name
Class
Date
1.
The area between the end of a motor nerve and a muscle fiber is a narrow space called a ____________________.
a)
endomysium
b)
acetylcholine
c)
sarcolemma
d)
synaptic cleft
2.
The ____________ is the longest muscle in the body. It aids in flexion of the hip and knee (sitting) and abducts and laterally rotates the thigh (such as when sitting cross-legged.
a)
Gluteus Maximus
b)
Sartorius
c)
Hamstrings
d)
Achilles Tendon
3.

Muscle that flexes and turns the head

a)

Frontalis

b)

Trapezius

c)

Rectus abdominis

d)

Sternocleidomastoid

4.

Muscle that raises the eyebrows when glancing upward.

a)

Frontalis

b)

Sternocleidomastoid

c)

Masseter

d)

Brachialis

5.
The _______ muscles are responsible for the functions of the internal or visceral organs.
a)
voluntary
b)
involuntary
c)
cardiac
d)
none of the above
6.

Muscle that raises and lowers the shoulders

a)

Biceps brachii

b)

Trapezius

c)

Sternocleidomastoid

d)

Biceps femoris

7.
A body tissue that contracts and moves the various parts of the body.
a)
Muscular tissue
b)
Connective tissue
c)
Epithelial tissue
d)
Nervous tissue
8.

Elevate the ribs during inspiration

a)

Internal intercostals

b)

external intercostals

c)

trapezius

9.

Flexes the abdomen to cause bending over at the waist

a)

Sartorius

b)

Brachialis

c)

Rectus abdominis

d)

Transversus Abdominis

10.

The prime mover when flexing the arm

a)

Biceps Brachii

b)

Triceps Brachii

c)

Brachialis

11.

The prime mover when extending the arm

a)

biceps brachii

b)

triceps brachii

c)

brachialis

12.
______ connect muscles to bones.
a)
Ligaments
b)
Tendon
13.
The _____ _______ theory explains muscle contraction based on how muscle fibers (actin and myosin) slide against each other to generate tension in the overall muscle.
a)
Sliding filament
b)
Pythagorean
c)
Muscle contraction
14.
The neurotransmitter that stimulates muscle contractions.
a)
Acetylcholine
b)
Calcium
c)
Acetylcholintrase
15.
What does the build up of lactic acid NOT do to the muscle?
a)
Causes acidic muscle
b)
Results in pain & soreness the next day
c)
Causes muscle fatigue
16.
Select the 3 types of Muscle.
a)
Skeletal
b)
Smooth
c)
Cardiac
d)
Strong
17.

There are about ___ muscles in the body.

a)
640
b)
840
c)
940
d)
740
18.
All muscle contraction requires energy in the form of _______ _______.
a)
ATP or Adenosine triphosphate
b)
Lactic acid
19.
A single muscle cell is called a ____ ____.
a)
Muscle fiber
b)
Fascicle fiber
20.
Muscles are named according to; (Check all that apply)
a)
Size
b)
Shape
c)
Location, number of origins
d)
Direction of muscle fibers
e)
Actions
21.
The following muscles are involved in breathing:
a)
External intercostals
b)
Internal intercostals
c)
Diaphragm
d)
All of the above.
22.
Skeletal muscles work in groups to create movement: The main muscle triggering the movement is the _____; the muscles that assist are _____; the muscles balancing these movements are _____.
a)
Prime mover, synergists, antagonists.
b)
Prime mover, antagonists, synergists.
c)
Antagonist, synergists, prime mover.
23.

The largest and most powerful muscle in the body

a)

Gluteus maximus

b)

Sartorius

c)

Gastocnemius

d)

Quadriceps femoris

24.
The _____________ is the most powerful muscle in the body. It is the prime mover for knee extension and consists of four muscles: rectus femoris, vastus lateralis, vastus medialis, and vastus intermedius.
a)
Quadriceps femoris
b)
Gluteal muscles
25.

The bulging muscles of the calf

a)

gastrocnemius

b)

quadriceps femoris

c)

brachialis

d)

sartorius

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