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Locomotion and movement: NEET MCQs with answers

143 questions on this topic of Human Physiology (NEET 2027 syllabus). Here are 12; tap one to see its answer and explanation.

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easy

1. Match the types of joints in Column I with their respective locations in Column II: Column I A. Ball and socket joint B. Hinge joint C. Pivot joint D. Saddle joint Column II 1. Between carpal and metacarpal of thumb 2. Knee joint 3. Between humerus and pectoral girdle 4. Between atlas and axis

  1. A-3, B-1, C-4, D-2
  2. A-3, B-2, C-4, D-1
  3. A-2, B-3, C-4, D-1
  4. A-4, B-2, C-3, D-1
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Answer: (B) A-3, B-2, C-4, D-1

Ball and socket joint is found between the humerus and pectoral girdle. Hinge joint is present at the knee joint. Pivot joint is between atlas and axis. Saddle joint is present between the carpal and metacarpal of the thumb.

medium

2. Which of the following events does NOT occur during the shortening of a sarcomere during muscle contraction?

  1. The length of the I-band decreases
  2. The width of the A-band decreases
  3. The H-zone narrows or disappears
  4. The Z-lines are pulled closer together
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Answer: (B) The width of the A-band decreases

During muscle contraction, the A-band retains its original length because the thick myosin filaments do not shorten. In contrast, the I-band shortens, the H-zone narrows/disappears, and Z-lines are drawn inwards.

hard

3. The 8th, 9th and 10th pairs of ribs do not articulate directly with the sternum but join the seventh rib with the help of hyaline cartilage. They are called:

  1. Vertebrochondral (false) ribs
  2. True ribs
  3. Floating ribs
  4. Bicephalic ribs
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Answer: (A) Vertebrochondral (false) ribs

The 8th, 9th and 10th pairs are vertebrochondral (false) ribs; the last two pairs (11th and 12th) are floating ribs, not connected ventrally.

medium

4. Each organised skeletal muscle is made of a number of muscle bundles or fascicles held together by a collagenous connective tissue layer called:

  1. Tendon sheath
  2. Sarcolemma
  3. Perichondrium
  4. Fascia
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Answer: (D) Fascia

A skeletal muscle consists of fascicles held together by a common collagenous connective tissue layer called fascia; each fascicle contains muscle fibres.

easy

5. Which of the following is a bone of the human axial skeleton?

  1. Clavicle
  2. Patella
  3. Scapula
  4. Sternum
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Answer: (D) Sternum

The axial skeleton comprises 80 bones distributed along the main axis of the body, which includes the skull, vertebral column, ribs, and sternum. Clavicle, scapula, and patella are parts of the appendicular skeleton.

hard

6. In the resting state of a muscle, the active binding sites for myosin on the actin filaments are masked by:

  1. ATP
  2. Tropomyosin alone
  3. Calcium ions
  4. Troponin
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Answer: (D) Troponin

A complex protein, troponin, distributed at regular intervals on tropomyosin, masks the active binding sites for myosin on actin in the resting state.

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7. The axial skeleton comprises how many bones?

  1. 29
  2. 126
  3. 206
  4. 80
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Answer: (D) 80

The axial skeleton has 80 bones distributed along the main axis: skull, vertebral column, sternum and ribs.

medium

8. Each actin (thin) filament is made of two F (filamentous) actins helically wound to each other. Each F-actin is a polymer of:

  1. Tropomyosin molecules
  2. Meromyosins
  3. Monomeric G (globular) actins
  4. Troponin subunits
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Answer: (C) Monomeric G (globular) actins

Each F-actin is a polymer of monomeric G (globular) actins; two filaments of tropomyosin also run along the F-actins.

medium

9. The middle ear contains three tiny bones on each side. These are:

  1. Hyoid, malleus and incus
  2. Atlas, axis and stapes
  3. Malleus, incus and stapes
  4. Scapula, clavicle and incus
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Answer: (C) Malleus, incus and stapes

Each middle ear has three ossicles — malleus, incus and stapes — collectively called ear ossicles.

hard

10. Assertion (A): Red muscle fibres can work for a long time without fatigue. Reason (R): Red fibres contain plenty of mitochondria and myoglobin and produce ATP aerobically. Choose the correct option.

  1. Both A and R are true and R is the correct explanation of A
  2. Both A and R are true but R is not the correct explanation of A
  3. A is true but R is false
  4. A is false but R is true
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Answer: (A) Both A and R are true and R is the correct explanation of A

Red (aerobic) fibres store oxygen in myoglobin and have many mitochondria, so they make ATP aerobically and resist fatigue.

medium

11. Each coxal bone of the pelvic girdle is formed by fusion of:

  1. Clavicle and scapula
  2. Tibia and fibula
  3. Radius and ulna
  4. Ilium, ischium and pubis
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Answer: (D) Ilium, ischium and pubis

The pelvic girdle has two coxal bones, each formed by fusion of ilium, ischium and pubis. The two halves meet ventrally at the pubic symphysis, which contains fibrous cartilage.

NCERT Class 11

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12. Identify the correct pair of bones that articulate to form a gliding joint in the human body:

  1. Between carpal and metacarpal of thumb
  2. Between atlas and axis
  3. Between humerus and pectoral girdle
  4. Between the carpals
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Answer: (D) Between the carpals

A gliding joint is present between the carpals. A saddle joint is present between the carpal and metacarpal of the thumb, a ball and socket joint is between the humerus and pectoral girdle, and a pivot joint is between the atlas and axis.

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