Locomotion and Movement Chapter-Wise Test 18

Correct answer Carries: 4.

Wrong Answer Carries: -1.

Which of the following muscles is involved in chewing?

Deltoid
Masseter
Biceps brachii
Gastrocnemius
2

The masseter muscle is one of the strongest muscles in the body and plays a key role in chewing.

Which of the following bones is part of the axial skeleton?

Femur
Humerus
Vertebra
Scapula
3

The vertebra is part of the axial skeleton, which includes the skull, vertebral column, and rib cage.

Which of the following conditions is characterized by inflammation of joints?

Arthritis
Osteoporosis
Tetany
Muscular dystrophy
1

Arthritis is a condition that causes inflammation, pain, and stiffness in joints.

Which structure in a long bone is responsible for the production of blood cells?

Compact bone
Periosteum
Red bone marrow
Yellow bone marrow
3

Red bone marrow, found in the spongy bone of long bones, is responsible for the production of blood cells.

Which of the following proteins plays a regulatory role in muscle contraction?

Tropomyosin
Myosin
Actin
Hemoglobin
1

Tropomyosin regulates muscle contraction by blocking the myosin-binding sites on actin filaments.

Which hormone stimulates the resorption of calcium from bones into the bloodstream?

Calcitonin
Parathyroid hormone
Insulin
Glucagon
2

Parathyroid hormone increases blood calcium levels by stimulating bone resorption.

Which hormone is responsible for increasing calcium deposition in bones?

Parathyroid hormone
Calcitonin
Thyroxine
Glucagon
2

Calcitonin lowers blood calcium levels by promoting calcium deposition in bones.

Which muscle type is responsible for voluntary movements?

Cardiac muscle
Smooth muscle
Skeletal muscle
Involuntary muscle
3

Skeletal muscles are under voluntary control and allow body movements.

Which of the following is a distinguishing feature of cardiac muscle?

Multinucleated cells
Non-striated appearance
Branched fibers
Voluntary control
3

Cardiac muscles have branched fibers, which allow for coordinated contractions necessary for pumping blood.

Which of the following statements about osteoporosis is incorrect?

It leads to decreased bone mass.
It is caused by increased calcium absorption.
It increases fracture risk.
It is common in elderly individuals.
2

Osteoporosis is caused by decreased calcium absorption, not increased absorption​.

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