NEET 2025 MCQ with Answer Explanation : “Locomotion and Movement”.

MCQ 91
What is the primary function of the adductor muscles?

A) Abduct the thigh
B) Flex the knee
C) Adduct the thigh
D) Extend the hip

Answer: C) Adduct the thigh
Explanation: The adductor muscles are responsible for bringing the thighs together, decreasing the angle between them.

MCQ 92
Which of the following structures prevents excessive movement at a joint?

A) Tendon
B) Ligament
C) Bursa
D) Cartilage

Answer: B) Ligament
Explanation: Ligaments connect bones at joints and help stabilize them by preventing excessive movement.

MCQ 93
What type of muscle contraction occurs when a muscle lengthens while under tension?

A) Concentric
B) Eccentric
C) Isometric
D) Isokinetic

Answer: B) Eccentric
Explanation: Eccentric contractions occur when a muscle lengthens while still generating force, such as when lowering a weight.

MCQ 94
Which muscle is primarily responsible for the movement of the jaw during chewing?

A) Masseter
B) Temporalis
C) Buccinator
D) A and B

Answer: D) A and B
Explanation: Both the masseter and temporalis muscles are crucial for closing the jaw and facilitating chewing.

MCQ 95
What type of joint is the knee classified as?

A) Hinge joint
B) Ball-and-socket joint
C) Pivot joint
D) Saddle joint

Answer: A) Hinge joint
Explanation: The knee is a hinge joint, primarily allowing flexion and extension movements.

MCQ 96
Which muscle assists in rotating the trunk?

A) Rectus abdominis
B) External oblique
C) Transverse abdominis
D) Erector spinae

Answer: B) External oblique
Explanation: The external oblique muscles are responsible for trunk rotation and lateral flexion.

MCQ 97
What is the role of myoglobin in muscle tissue?

A) Store calcium ions
B) Transport oxygen
C) Provide energy
D) Stimulate contraction

Answer: B) Transport oxygen
Explanation: Myoglobin is a protein in muscle tissue that binds oxygen, facilitating its storage and transport for muscle metabolism.

MCQ 98
Which of the following is NOT a function of the skeletal system?

A) Protect vital organs
B) Produce hormones
C) Store minerals
D) Facilitate movement

Answer: B) Produce hormones
Explanation: While bones can influence hormone regulation, they do not primarily produce hormones; their main functions include protection, mineral storage, and movement facilitation.

MCQ 99
What movement is described as moving a limb away from the midline of the body?

A) Abduction
B) Adduction
C) Flexion
D) Extension

Answer: A) Abduction
Explanation: Abduction refers to moving a limb away from the body’s midline, such as raising an arm to the side.

MCQ 100
Which of the following muscles is involved in knee flexion?

A) Quadriceps
B) Hamstrings
C) Gluteus maximus
D) Soleus

Answer: B) Hamstrings
Explanation: The hamstring muscles are responsible for flexing the knee joint during movements like running and squatting.