Muscular Physiology Quiz

Test your understanding of muscle physiology with these questions covering muscle types, functions, neurotransmitters, and more.

#1

Which type of muscle is responsible for involuntary movements like digestion and breathing?

Skeletal muscle
Cardiac muscle
Smooth muscle
Striated muscle
2 answered
#2

Which term describes the ability of muscle fibers to stretch without being damaged?

Elasticity
Contractility
Extensibility
Irritability
2 answered
#3

What is the name of the specialized plasma membrane of a muscle fiber?

Sarcomere
Sarcoplasmic reticulum
Sarcolemma
Myofibril
2 answered
#4

Which type of muscle tissue has striations and is under voluntary control?

Skeletal muscle
Cardiac muscle
Smooth muscle
Involuntary muscle
1 answered
#5

Which term describes the ability of muscle fibers to generate force?

Elasticity
Extensibility
Contractility
Excitability
1 answered
#6

What is the primary function of the sarcoplasmic reticulum in muscle cells?

Storage of glycogen
Regulation of calcium ions
Production of ATP
Synthesis of myoglobin
1 answered
#7

Which of the following neurotransmitters is released at the neuromuscular junction to initiate muscle contraction?

Dopamine
Serotonin
Acetylcholine
Norepinephrine
1 answered
#8

During anaerobic respiration, which compound accumulates in muscle cells and contributes to fatigue?

Carbon dioxide
Lactic acid
Oxygen
Glucose
1 answered
#9

Which structural protein provides the main force for muscle contraction by interacting with actin filaments?

Myosin
Tropomyosin
Troponin
Titin
1 answered
#10

What is the term for the smallest functional unit of a muscle fiber, consisting of overlapping actin and myosin filaments?

Myofibril
Sarcomere
Myofilament
Fascicle
1 answered
#11

Which of the following is NOT a function of skeletal muscles?

Production of body heat
Generation of voluntary movements
Regulation of blood glucose levels
Maintenance of posture
1 answered
#12

Which enzyme breaks down acetylcholine at the neuromuscular junction to terminate muscle stimulation?

Acetylcholinesterase
Cholinesterase
Acetyltransferase
Acetylase
1 answered
#13

Which term refers to the increase in muscle size due to an increase in the size of individual muscle fibers?

Hypertrophy
Atrophy
Hyperplasia
Sarcopenia
1 answered

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