NEET Biology Locomotion and Movement MCQs Set 09

Multiple Choice Questions (MCQs) for NEET Biology: Locomotion and Movement

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Multiple Choice Questions

Question 1: Which of the following are involved in the formation of acetabulum?<br />a. Ilium<br />b. Ischium<br />c. Pubis
(a) a & b only
(b) b & c only
(c) a & c only
(d) a, b & c
Show Answer & Explanation

Answer: (d) a, b & c

Explanation:
1. Acetabulum is formed by ilium, ischium and pubis.

Question 2: Mark the odd one w.r.t. girdle bones
(a) Clavicle
(b) Ischium
(c) Ileum
(d) Pubis
Show Answer & Explanation

Answer: (c) Ileum

Explanation:
1. Ileum is a part of small intestine.

Question 3: The pivot joint between atlas and axis is a type of
(a) Fibrous joint
(b) Cartilaginous joint
(c) Synovial joint
(d) Saddle joint
Show Answer & Explanation

Answer: (c) Synovial joint

Explanation:
1. Synovial joints are freely movable joint which allow considerable movements.
2. Pivot joint is a type of synovial joint which provide rotational movement as in between atlas and axis vertebrae of vertebral column.

Question 4: Name the ion responsible for unmasking of active sites for myosin for cross-bridge activity during muscle contraction.
(a) Calcium
(b) Magnesium
(c) Sodium
(d) Potassium
Show Answer & Explanation

Answer: (a) Calcium

Explanation:
1. Calcium ions bind with TpC unit of troponin which is responsible for unmasking of active sites for myosin for crossbridge activity during muscles contraction.

Question 5: Osteoporosis, an age-related disease of skeletal system, may occur due to
(a) Immune disorder affecting neuromuscular junction leading to fatigue
(b) High concentration of Ca++ and Na+
(c) Decreased level of estrogen
(d) Accumulation of uric acid leading to inflammation of joints
Show Answer & Explanation

Answer: (c) Decreased level of estrogen

Explanation:
1. Osteoporosis in aged female after menopause is due to decreased level of estrogen.

Question 6: Lack of relaxation between successive stimuli in sustained muscle contraction is known as
(a) Tonus
(b) Spasm
(c) Fatigue
(d) Tetanus
Show Answer & Explanation

Answer: (d) Tetanus

Explanation:
1. Sustained muscle contraction due to repeated stimulus is known as tetanus.

Question 7: Which of the following is not a function of the skeletal system?
(a) Locomotion
(b) Production of erythrocytes
(c) Storage of minerals
(d) Production of body heat
Show Answer & Explanation

Answer: (d) Production of body heat

Explanation:
1. This option, Production of body heat, is the correct choice, as it agrees with the standard NCERT account of this topic.

Question 8: Which of the following joints would allow no movement?
(a) Ball and Socket joint
(b) Fibrous joint
(c) Cartilaginous joint
(d) Synovial joint
Show Answer & Explanation

Answer: (b) Fibrous joint

Explanation:
1. This option, Fibrous joint, is the correct choice, as it agrees with the standard NCERT account of this topic.

Question 9: Sliding filament theory can be best explained as
(a) When myofilaments slide pass each other, Myosin filaments shorten while Actin filaments do not shorten
(b) When myofilaments slide pass each other Actin filaments shorten, while Myosin filament do not shorten
(c) Actin and Myosin filaments shorten and slide pass each other
(d) Actin and Myosin filaments do not shorten but rather slide pass each other
Show Answer & Explanation

Answer: (d) Actin and Myosin filaments do not shorten but rather slide pass each other

Explanation:
1. Actin filament slides over thick filament i.e., the myosin filament.

Question 10: Glenoid cavity articulates
(a) Humerus with scapula
(b) Clavicle with acromion
(c) Scapula with acromion
(d) Clavicle with scapula
Show Answer & Explanation

Answer: (a) Humerus with scapula

Explanation:
1. Scapula has shallow articular surface called glenoid cavity.
2. This articulates with the head of the humerus to form the shoulder joint.

Question 11: Stimulation of a muscle fiber by a motor neuron occurs at
(a) The neuromuscular junction
(b) The transverse tubules
(c) The myofibril
(d) The sarcoplasmic reticulum
Show Answer & Explanation

Answer: (a) The neuromuscular junction

Explanation:
1. The junction between a motor neuron and the sarcolemma is called neuromuscular junction or motor end plate.

Question 12: The characteristics and an example of a synovial joint in humans is: Characteristics Examples
(a) Fluid filled between two joints, provides cushion Skull bones
(b) Fluid filled synovial cavity between two bones Joint between atlas and axis
(c) Lymph filled between two bones, limited movement Gliding joint between carpals
(d) Fluid cartilage between two bones, limited movements Knee joint
Show Answer & Explanation

Answer: (b) Fluid filled synovial cavity between two bones Joint between atlas and axis

Explanation:
1. This option, Fluid filled synovial cavity between two bones Joint between atlas and axis, is the correct choice, as it agrees with the standard NCERT account of this topic.

Question 13: Select the correct statement with respect to locomotion in humans:
(a) Accumulation of uric acid crystals in joints causes their inflammation.
(b) The vertebral column has 10 thoracic vertebrae
(c) The joint between adjacent vertebrae is a fibrous joint
(d) A decreased level of progesterone causes osteoporosis in old people
Show Answer & Explanation

Answer: (a) Accumulation of uric acid crystals in joints causes their inflammation.

Explanation:
1. This option, Accumulation of uric acid crystals in joints causes their inflammation., is the correct choice, as it agrees with the standard NCERT account of this topic.

Question 14: The H-zone in the skeletal muscle fibre is due to
(a) The central gap between myosin filaments in the A-band
(b) The central gap between actin filaments extending through myosin filaments in the A-band
(c) Extension of myosin filaments in the central portion of the A-band
(d) The absence of myofibrils in the central portion of A-band
Show Answer & Explanation

Answer: (b) The central gap between actin filaments extending through myosin filaments in the A-band

Explanation:
1. This option, The central gap between actin filaments extending through myosin filaments in the A-band, is the correct choice, as it agrees with the standard NCERT account of this topic.

Question 15: Three of the following pairs of the human skeletal parts are correctly matched with their respective inclusive skeletal category and one pair is not matched. Identify the non-matching pair Pairs of skeletal parts Category
(a) Humerus and ulna Appendicular skeleton
(b) Malleus and stapes Ear ossicles
(c) Sternum and Ribs Axial skeleton
(d) Clavicle and Glenoid cavity Pelvic girdle
Show Answer & Explanation

Answer: (d) Clavicle and Glenoid cavity Pelvic girdle

Explanation:
1. Clavicle and glenoid cavity are part of pectoral girdle.

Question 16: The type of muscles present in our
(a) Thigh are striated and voluntary
(b) Upper arm are smooth muscle fibres fusiform in shape
(c) Heart are involuntary and unstriated smooth muscles
(d) Intestine are striated and involuntary
Show Answer & Explanation

Answer: (a) Thigh are striated and voluntary

Explanation:
1. This option, Thigh are striated and voluntary, is the correct choice, as it agrees with the standard NCERT account of this topic.

Question 17: Low Ca++ in the body fluid may be the cause of
(a) Gout
(b) Tetany
(c) Anaemia
(d) Angina pectoris
Show Answer & Explanation

Answer: (b) Tetany

Explanation:
1. Low Ca2+ leads to tetany.
2. Low level of calcium in the extracellular fluid / blood plasma leads to increase in the excitability of the excitatory cells i.e., muscles and nerves and thus muscle shows sustained contracted state known as tetany.
3. Gout : due to accumulation of uric acid.
4. Anaemia : deficiency of iron.

Question 18: Which one of the following is the correct description of a certain part of a normal human skeleton?
(a) Parietal bone and the temporal bone of the skull are joined by fibrous joint
(b) First vertebra is axis which articulates with the occipital condyles
(c) The 9th and 10th pairs of ribs are called the floating ribs
(d) Glenoid cavity is a depression to which the thigh bone articulates
Show Answer & Explanation

Answer: (a) Parietal bone and the temporal bone of the skull are joined by fibrous joint

Explanation:
1. The parietal bone and temporal bones are connected with fibrous joint. – First vertebra is atlas – 9th and 10th ribs comes under false ribs – Glenoid cavity is found in the pectoral girdle.

Question 19: Which one of the following is correct pairing of a body part and the kind of muscle tissue that moves it?
(a) Biceps of upper arm – Smooth muscle fibres
(b) Abdominal wall – Smooth muscle
(c) Iris – Involuntary smooth muscle
(d) Heart wall – Involuntary unstriated muscle
Show Answer & Explanation

Answer: (c) Iris – Involuntary smooth muscle

Explanation:
1. This option, Iris – Involuntary smooth muscle, is the correct choice, as it agrees with the standard NCERT account of this topic.

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