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F25 Muscle Physiology Notes Check

Total questions: 12

Worksheet time: 36mins

Name
Class
Date
1.

Match the muscle type with it's description

a)

arranged in uniform layers, propels body fluids and food

1.

smooth muscle

b)

branched, generates the heartbeat

2.

cardiac muscle

c)

long and cylindrical provides muscle tone and generates heat

3.

skeletal muscle

2.

Organize the structure of skeletal muscle from the largest (1) to smallest unit (5)

a)

Muscle

b)

Fascicle

c)

Muscle Fiber

d)

Myofibril

e)

Myofilament

1)
2)
3)
4)
5)
3.

Muscle fibers contain the thick filament ___ and the thin filament____

a)
actin, myosin
b)
myosin, actin
c)
myosin, troponin
d)
tropomyosin, actin
4.
Skeletal muscles are bundled together in units called fascicles which are connected to bones via
a)
perimysium
b)
tendons
c)
actin
d)
endomysium
5.

This is the structural and functional unit of a muscle contraction

a)

sarcomere

b)

fascicle

c)

tendon

d)

sarcoplasmic reticulum

6.

Select the regions that represent the Z-lines.

7.

Select the regions that represent the H zone.

8.

Select the region that represents the I band

9.

Select the region that represents the A band

10.

The connection or space between a motor nerve and a muscle fiber is called a

a)
neuromuscular junction
b)
motor end plate
c)
axon
d)
sliding filament
11.
This neurotransmitter needed to initiate a muscle contraction is __
a)
Calcium
b)
acetylcholine
c)
creatine phosphate
d)
ATP
12.
The energy source needed for a muscle contraction to occur is
a)
calcium
b)
acetylcholine
c)
ATP
d)
hemoglobin