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Locomotion and Movement

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The three main types of movements, shown by human cells are

  1. visceral, muscular and skeletal

  2. amoeboid, ciliary and muscular

  3. amoeboid, muscular and skeletel

  4. muscular, ciliary and visceral

  5. visceral, amoeboid and muscular


Correct Option: B
Explanation:

Yes, it is correct. Cells of the human body exhibit three main types of movement, namely amoeboid, ciliary and muscular.

Which of the following statements is false regarding movements and locomotions?

  1. Movements resulting in change of location are locomotion.

  2. All movements are locomotions and all locomotions are movements.

  3. In paramecium, cilia helps in the movement of food through cytopharynx and in locomotion as well.

  4. Hydra can use its tentacles for capturing its prey and also for locomotion.

  5. None of these


Correct Option: B
Explanation:

Yes, it is the correct answer as the statement given is false. All locomotions are movements, but all movements are not locomotions. Like we use limbs for changing the body posture and locomotion as well.

Amoeboid movement is a kind of crawling movement, in which the cell forms temporary cytoplasmic projections called ______________, towards the front of the cell.

  1. false feet

  2. villi

  3. pseudopodia

  4. 1 and 3

  5. all of these


Correct Option: D
Explanation:

A kind of crawling movement in which the cell forms temporary cytoplasmic projections, called pseudopodia or false feet, towards the front of the cell.

Which of the following muscles is/are striated in appearance?

  1. Skeletal

  2. Cardiac

  3. Visceral

  4. 1 and 2

  5. 1 and 3


Correct Option: D
Explanation:

Yes, it is the correct answer. Skeletal and cardiac muscles are striated in appearance.

Activities of which of the following muscle are not directly controlled by the nervous system? (a) Skeletal muscles (b) Cardiac muscles (c) Visceral muscles

  1. (a) and (b)

  2. (b) and (c)

  3. (a) and (c)

  4. only (a)

  5. only (b)


Correct Option: B
Explanation:

Yes, it is correct. Cardiac and visceral muscles are not under the voluntary control of the nervous system and are therefore, known as involuntary muscles.

Actin and myosin are two types of ___________ in the human body.

  1. bands on myofibril

  2. proteins in myofibril

  3. fibres of muscles

  4. muscles

  5. none of these


Correct Option: B
Explanation:

Yes, actin and myosin are two types of proteins distributed in proteins.

Which of the following is incorrect, regarding skeletal muscle fibre?

  1. It is lined by sarcolemma

  2. It is syncitium

  3. Each fibre is made up of a number of myofibrils

  4. Each myofibril is multi-coloured

  5. Each muscle bundle contains a number of muscle fibres


Correct Option: D
Explanation:

It is the correct answer as this option is incorrect. Each myofibril has alternate dark and light bands. It is not multi-coloured.

Which of the options is incorrect regarding skeleton muscles?

  1. They have striped appearance under microscope

  2. They are involved in change in body postures

  3. They are also known as striated, voluntary muscles

  4. They are found in the inner walls of hollow organs

  5. They are associated with skeletal components of the body


Correct Option: D
Explanation:

This is the correct answer, as this option is incorrect. Visceral muscles are located in the inner walls of hollow visceral organs of the body as are the alimentary canal, reproductive tract, etc.

Which of the following is the functional unit of contraction in the muscles?

  1. Sarcomere

  2. Meromyosin

  3. Sarcolemma

  4. Neuro muscular junction

  5. None of these


Correct Option: A
Explanation:

Yes, the portion of the myofibril between two successive ‘Z’ lines is considered the functional unit of contraction, and is called a sarcomere.

The U-shaped bone present at the base of the buccal cavity and also included in the skull, is called _________.

  1. stapes

  2. hyoid

  3. incus

  4. malleus

  5. sternum


Correct Option: B
Explanation:

Yes, it is correct. The U-shaped bone present at the base of the buccal cavity and also included in the skull, is called hyoid.

Last 2 pairs (eleventh and twelfth) of ribs are not connected ventrally and are therefore, called ____________.

  1. vertebrochondral ribs

  2. floating ribs

  3. true ribs

  4. bicephalic

  5. none of these


Correct Option: B
Explanation:

Yes, last 2 pairs (eleventh and twelfth) of ribs are not connected ventrally, and are therefore, called floating ribs.

Axial skeleton consists of ________________ bones and the skull has __________ bones.

  1. 80, 14

  2. 206, 22

  3. 80, 8

  4. 206, 14

  5. 80, 22


Correct Option: D
Explanation:

Yes, it is correct. Axial skeleton consists of 80 bones distributed along the main axis of the body. The skull is composed of two sets of bones – cranial and facial, that totals to 22 bones. Axial skeleton consists of 80 bones distributed along the main axis of the body. The skull is composed of two sets of bones – cranial and facial, that totals to 22 bones.

Each coxal bone is formed by the fusion of three bones, ______________.

  1. ilium, ischium and pubis

  2. tibia, fibula and tarsals

  3. radius, ulna and carpals

  4. malleus, incus and stapes

  5. none of these


Correct Option: A
Explanation:

Yes, it is correct. Pelvic girdle consists of two coxal bones. Each coxal bone is formed by the fusion of three bones – ilium, ischium and pubis.

There are _________ pair of ribs, out of which _, _ and ___ pairs are false ribs.

  1. 12, 7th, 8th, 10th

  2. 14, 8th, 9th, 10th

  3. 11, 9th, 10th, 11th

  4. 12, 8th, 9th, 10th

  5. 22, 8th, 9th, 10th


Correct Option: D
Explanation:

Yes, it is correct. There are 12 pairs of ribs. 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. These are called false ribs.

Where is the amoeboid movement seen in human body?

  1. In the trachea

  2. In the tongue

  3. Macrophages and leukocytes cells

  4. Passage of ova

  5. In the heart


Correct Option: C
Explanation:

Yes, some specialised cells in our body like macrophages and leukocytes in blood exhibit amoeboid movement.

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