Locomotion and Movement

Class 11th Biology – 20 Locomotion and Movement MCQs

The 8th and 9th ribs are known as false ribs because their external portions are attached to

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The eight, ninth and tenth pairs of ribs are called false ribs. They articulate by cartilage with costal cartilage of the seventh rib.

Which of the following doesn’t require muscular movement?

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Internal tubular organs involve ciliary movement whereas limbs, jaws and tongue require muscular movement.

Joint between atlas and axis is

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Joint between atlas and axis is pivot joint.

Which of the following bisects the isotropic band?

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The light bands contain actin and are called I-bands are isotropic bands. In the center of each ‘I’ band there is an elastic fibre called ‘Z’ line. This ‘Z’ line bisects the isotropic or I band.

The dark bands (Black bands) (A-bands) of a skeletal muscle are known as

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Each myofibril shows dark and light bands. The dark bands of the myofibril are termed as A-bands or anisotropic bands.

Which of the following is the flat bone on the ventral midline of thorax?

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Sternum is the flat bone on the ventral midline of thorax.

Sarcolemma is a membrane found over

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Sarcolemma is present on the outside of skeletal muscle fibre. In the region of attachment, the sarcolemma is folded to form finger like projections.

Which one is a ball and socket joint?

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Humerous and pectoral girdle is a ball and socket joint.

Which of the following proteins is present in myofibril?

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Myofibrils are composed of thin filaments which are primarily made up of actin.

Where are the neurotransmitter receptors present in muscle tissue?

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In muscle tissue the neurotransmitter receptors are present on the motor end plate.

Major protein in the thick filament of skeletal muscle fibre is

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Myosin filaments are thicker and confined to the A-bands only. They are composed of myosin protein.

Which of the following muscle cells are thread-like?

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Skeletal muscles have thread-like cells and they are called striated muscle.

Which of the following is not the criteria used to classify muscle?

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Muscles are classified using location, appearance and nature of regulation of their activities. But, place of origin is not the criterion used for classification because muscle is a specialised tissue of mesodermal origin.

Which of the following muscles help in locomotion?

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Skeletal muscles are responsible for locomotory actions and they are closely associated with the skeletal components of the body.

The number of floating ribs, in the human body, is

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The last two pairs i.e., 11th & 12th pairs ribs remain free anteriorly, hence, they are called as floating ribs.

Number of bones in human body is

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Human skeleton is mainly formed of bones and cartilages. It is formed of 206 bones in adult man.

Which of the following is not a part of axial skeleton?

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The axial and the appendicular skeleton are the two principal divisions of skeleton. The skull, vertebral column, sternum and ribs constitute axial skeleton. The bones of the limbs along with their girdles constitute the appendicular skeleton. Fore limb comes under the appendicular skeleton category.

Which of the following cells can’t exhibit amoeboid movement?

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Macrophages, neutrophils and monocytes exhibit amoeboid movement whereas the erythrocytes does not exhibit amoeboid movement.

Which of the following occurs due to accumulation of uric acid crystals?

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Gout is an inflammation of joints due to accumulation of uric acid crystals.

Which of the following is the joint between carpal and metacarpal of thumb?

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Saddle joint is the joint between carpal and metacarpal of thumb.

Which of the following is responsible for the reddish appearance of the muscles?

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Presence of myoglobin in high content is the responsible for the reddish appearance of the muscles.

In man the axial skeleton is made up of

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It forms the main axis. It consists of skull- 22 bones, vertebral column- 33 vertebrae, sternum-1 and ribs-24.

Why do cartilages have slightly pliable matrix?

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Cartilage is a specialized connective tissue which has slightly pliable matrix due to chondroitin salts.

Cranium of man is made up of

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The cranium is formed by 8 bones. (1 frontal bone, 2 parietal, 2 temporal, 1 occipital, 1 sphenoid, 1 ethmoid)

Thoracic cage is made up of

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Rib cage consists of vertebral column (dorsal), sternum (ventral) and ribs (lateral).

Patella is associated with

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Patella is flat bone. Patella is also called knee cap.

Which of the following is an example of appendicular skeleton?

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Appendicular skeleton consists of pectoral and pelvic girdles and bones of arms and legs.

Which of the following pairs is correct?

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Some muscles which possess very less quantity of myoglobin and appear pale or whitish are the White fibres. They contain less number of mitochondria but the amount of sarcoplasmic reticulum is high.

Immediate source of energy for muscle contraction is

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Immediate source of energy for muscle contraction is ATP.

Which of the following muscles are under voluntary control?

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The activities of the skeletal muscles are under the control of nervous system and functions at our will.

Class 11th Biology - 20 Locomotion and Movement MCQs
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Class 11th Biology - 20 Locomotion and Movement MCQs