Locomotion and Movement

NEET Biology · 98 questions · Page 8 of 10 · Click an option or "Show Solution" to reveal answer

Q71

In human body, which one of the following is anatomically correct?

A Collar bones - 1 pair

B Salivary glands - 1 pair

C Cranial nerves - 12 pairs

D Floating ribs - 3 pairs

Correct Answer

Option D

Solution

(d) Floating ribs = 2 pairs (11th and 12th pair), not attached to sternum.

Q72

Which one of the following items gives its correct total number?

A Floating ribs in humans - 3

B Amino acids found in proteins - 20

C Types of diabetes - 2

D Cervical vertebrae in humans - 7

Correct Answer

Option A

Solution

(a) Humans have 2 pairs (4 bones) of floating ribs; 20 standard amino acids; 7 cervical vertebrae.

Q73

Elbow joint is an example of:

A hinge joint

B gliding joint

C ball and socket joint

D pivot joint

Correct Answer

Option A

Solution

(a) Elbow joint is a hinge joint — allows angular movement in one plane.

Q74

Three of the following pairs of human skeletal parts are correctly matched. Identify the non-matching pair:

A Sternum and Ribs - Axial skeleton

B Clavicle and Glenoid cavity - Pelvic girdle

C Humerus and Ulna - Appendicular skeleton

D Malleus and Stapes - Ear ossicles

Correct Answer

Option B

Solution

(b) Clavicle and Glenoid cavity belong to the pectoral girdle, not the pelvic girdle.

Q75

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 The decreased level of progesterone causes osteoporosis in old people.

Correct Answer

Option A

Solution

(a) Gout is caused by deposition of urate crystals in joints causing inflammation.

Q76

Which statement is correct for muscle contraction?

A Length of H-line decreases

B Length of A-band remains constant

C Length of I-band increases

D Length of two Z-lines increase

Correct Answer

Option A

Solution

(a,b) During contraction Z-lines come closer, sarcomere shortens; A-band remains constant; I-bands and H-band narrow.

Q77

The characteristics and an example of a synovial joint in humans: Fluid filled synovial cavity between two bones, considerable movement - example?

A Fluid filled between two joints provides cushion - Cerebrospinal fluid

B Fluid filled synovial cavity between two bones - Joint between atlas and axis

C Synovial fluid filled between two bones, limited movement - gliding joint between carpals

D Fluid cartilage between two bones, limited movement - Knee joint

Correct Answer

Option B

Solution

(b) Synovial joints have fluid-filled cavity allowing considerable movement; atlas-axis is an example.

Q78

Select the correct matching of the type of joint with the example in human skeletal system

A Sutures between frontal and parietal

B Pivot joint between second and third cervical vertebrae

C Ball and socket joint between humerus and pectoral girdle

D Gliding joint between carpals

Correct Answer

Option D

Solution

(d) Gliding joints allow movement in the plane of the joint; found between carpal bones.

Q79

Which of the following is not a function of the skeletal system?

A Storage of minerals

B Production of body heat

C Locomotion

D Production of erythrocytes

Correct Answer

Option B

Solution

(b) Body heat is produced by metabolic processes (cellular respiration), not the skeletal system.

Q80

Which of the following joints would allow no movement?

A Cartilaginous joint

B Synovial joint

C Ball and Socket joint

D Fibrous joint

Correct Answer

Option D

Solution

(d) Fibrous joints (e.g., sutures between skull bones) allow no movement.

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