MCQ 31
What is the function of the Achilles tendon?
A) Connects knee to thigh
B) Connects calf muscle to heel
C) Supports the spine
D) Connects fingers to hand
Answer: B) Connects calf muscle to heel
Explanation: The Achilles tendon connects the calf muscles to the heel bone, playing a key role in walking and running.
MCQ 32
Which movement is opposite to flexion?
A) Extension
B) Abduction
C) Rotation
D) Circumduction
Answer: A) Extension
Explanation: Extension increases the angle between body parts, serving as the opposite movement to flexion.
MCQ 33
What type of energy is primarily used during short bursts of high-intensity exercise?
A) Aerobic
B) Anaerobic
C) Lactic
D) Glycolytic
Answer: B) Anaerobic
Explanation: Anaerobic energy production occurs during short, intense activities and does not require oxygen, leading to lactic acid production.
MCQ 34
Which part of the neuron is responsible for transmitting signals away from the cell body?
A) Dendrite
B) Axon
C) Soma
D) Synapse
Answer: B) Axon
Explanation: The axon is the part of the neuron that conducts electrical impulses away from the cell body to other neurons or muscles.
MCQ 35
Which type of muscle contraction involves lengthening of the muscle?
A) Isometric
B) Concentric
C) Eccentric
D) Isotonic
Answer: C) Eccentric
Explanation: Eccentric contraction occurs when a muscle lengthens while under tension, often seen when lowering a weight.
MCQ 36
What is the primary role of the neuromuscular junction?
A) Connects muscles to bones
B) Transmits signals from nerves to muscles
C) Stores calcium ions
D) Provides blood supply to muscles
Answer: B) Transmits signals from nerves to muscles
Explanation: The neuromuscular junction is the synapse where a motor neuron communicates with a muscle fiber, triggering contraction.
MCQ 37
Which muscle group is primarily responsible for the upward motion of a pull-up?
A) Quadriceps
B) Biceps
C) Pectorals
D) Triceps
Answer: B) Biceps
Explanation: The biceps brachii is primarily responsible for flexing the elbow and pulling the body upward during a pull-up.
MCQ 38
What is the term for the movement of a limb toward the body’s midline?
A) Abduction
B) Adduction
C) Flexion
D) Extension
Answer: B) Adduction
Explanation: Adduction is the movement of a limb or body part toward the midline of the body.
MCQ 39
What is the primary function of cartilage in joints?
A) Store nutrients
B) Reduce friction
C) Produce synovial fluid
D) Connect muscles to bones
Answer: B) Reduce friction
Explanation: Cartilage provides a smooth surface for joint movement and absorbs shock, reducing friction between bones.
MCQ 40
Which muscle type is involuntary and striated?
A) Skeletal
B) Smooth
C) Cardiac
D) Epithelial
Answer: C) Cardiac
Explanation: Cardiac muscle is striated like skeletal muscle but is involuntary, controlling heart contractions.
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