Free Printable Muscle Physiology Quiz

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Muscle Physiology Quiz

Total questions: 20

Worksheet time: 10mins

Name

Class

Date

1.

Sarcotubular system is mainly involved in

a)

Energy production

b)

Calcium storage and release

c)

Protein synthesis

d)

Heat production

2.

Triad in skeletal muscle consists of

a)

One T tubule and one cisterna

b)

Two T tubules and one cisterna

c)

One T tubule and two terminal cisternae

d)

Two T tubules only

3.

T tubules are invaginations of

a)

Sarcoplasmic reticulum

b)

Sarcolemma

c)

Nuclear membrane

d)

Mitochondrial membrane

4.

Calcium is released from which part of SR

a)

Longitudinal tubules

b)

Terminal cisternae

c)

T tubules

d)

Z line

5.

Neurotransmitter at NMJ is

a)

GABA

b)

Acetylcholine

c)

Dopamine

d)

Noradrenaline

6.

Myasthenia gravis is caused by antibodies against

a)

ACh

b)

ACh receptors

c)

Calcium channels

d)

Sodium channels

7.

Lambert Eaton syndrome affects

a)

Postsynaptic ACh receptors

b)

Presynaptic Ca channels

c)

Myosin heads

d)

Actin filaments

8.

Rigor mortis occurs due to lack of

a)

Calcium

b)

ATP

c)

Acetylcholine

d)

Creatine phosphate

9.

First event in rigor mortis is

a)

Actin degradation

b)

ATP depletion

c)

Myosin breakdown

d)

Calcium reuptake

10.

Red muscle fibers are rich in

a)

Glycogen

b)

Myoglobin

c)

Creatine phosphate

d)

Lactic acid

11.

White muscle fibers primarily use

a)

Oxidative metabolism

b)

Glycolysis

c)

Fat metabolism

d)

Ketone metabolism

12.

Type I fibers are best suited for

a)

Quick movements

b)

Postural activity

c)

Eye movements

d)

Jumping

13.

ATP is required for

a)

Attachment of myosin to actin

b)

Detachment of myosin from actin

c)

Release of calcium from SR

d)

Opening of sodium channels

14.

ATP is needed during muscle relaxation for

a)

Actin binding

b)

Calcium reuptake into SR

c)

Cross bridge formation

d)

Tropomyosin movement

15.

Isometric contraction involves

a)

Change in muscle length

b)

No tension development

c)

Change in tension without length change

d)

Movement of joint

16.

Example of isotonic contraction

a)

Holding a book

b)

Standing still

c)

Lifting a weight

d)

Pushing against wall

17.

Fastest conducting nerve fibres are

a)

B fibres

b)

A fibres

c)

C fibres

d)

D fibres

18.

Function of sensory nerve fibres is

a)

Motor activity

b)

Autonomic control

c)

Transmission of impulses from receptors

d)

Muscle contraction

19.

Refractory period is property of

a)

Nerve only

b)

Muscle only

c)

Both nerve and muscle

d)

Neither nerve nor muscle

20.

Smooth muscle contraction is initiated by

a)

Troponin

b)

Calmodulin

c)

Tropomyosin

d)

Myosin ATPase

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