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Microscopic Muscle Anatomy

Total questions: 24

Worksheet time: 12mins

Name
Class
Date
1.
The Light I Band consists of... 
a)
Myosin filaments only
b)
Actin filaments only
c)
Myosin and actin filaments
d)
none of the above
2.
The functional unit of the muscle cell is the: 
a)
Sarcomere
b)
Osteon
c)
Myofilament
d)
Muscle fiber
3.
The thick filament is composed of: 
a)
Myosin
b)
Actin
4.
The thin filament is composed of: 
a)
Myosin
b)
Actin
5.
Fill-in-the-blank! Muscle, Fascicle, _____, Myofibril
a)
Muscle fiber
b)
Myofilament
c)
Sarcomere
d)
Actin 
6.
Actin filaments our bound to the edges of the sarcomere, also known as the...
a)
M-Line
b)
H-Zone
c)
Z-Disc
d)
A-Band
7.
Which of the following is NOT a function of the muscular system?
a)
Heat production
b)
Joint stability
c)
Movement
d)
Communication
8.
Which of the following muscle types is NOT striated?!
a)
Smooth
b)
Skeletal 
c)
Cardiac
d)
All of the above are striated
9.

Scientific name for muscle fiber bundle.

a)

Epimysium

b)

Fascicle

c)

Myofibril

d)

Myofilament

10.

Tough connective tissue sheath that surrounds the entire muscle.

a)

Endomysium

b)

Epimysium

c)

Fascicle

d)

Perimysium

11.

Connective tissue sheath that surrounds muscle fibers.

a)

Endomysium

b)

Epimysium

c)

Fascicle

d)

Perimysium

12.

Made up of actin filaments.

a)

Fascicle

b)

Myofilaments

c)

Thick filament

d)

Thin filament

13.

Made up of myosin filaments and contains ATPase.

a)

Myofibril

b)

Myofilament

c)

Thick filament

d)

Thin filament

14.

Small, contractile units found in myofibrils.

a)

Myofibril

b)

Myofilaments

c)

Sarcomere

d)

Sarcolemma

15.

Band created when think and thin filaments overlap.

a)

I band

b)

A band

c)

H-Zone

d)

M-line

16.

Disappears when the muscle is contracted.

a)

I band

b)

A band

c)

H-zone

d)

M-line

17.

Middle of the sarcomere.

a)

I band

b)

A band

c)

H-zone

d)

M-line

18.

Located on opposite ends of the sarcomere.

a)

I band

b)

A band

c)

H-zone

d)

Z disc

19.

Which label is the muscle fiber?

a)

A

b)

B

c)

C

d)

D

20.

Which label indicates the sarcomere?

a)

H

b)

I

c)

J

d)

K

21.

Which label indicates the filament composed of myosin?

a)

H

b)

I

c)

J

d)

K

22.

Which label indicates the H-zone?

a)

J

b)

K

c)

L

d)

M

23.

Which label indicates the I band?

a)

H

b)

I

c)

J

d)

K

24.

Which label indicates the A band?

a)

J

b)

K

c)

L

d)

M

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