Locomotion and Movement Test

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Locomotion and Movement Test - 17

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Question 1
1 / -0

Number of floating ribs in human are

A
6 pairs

B
5 pairs

C
3 pairs

D
2 pairs
Solution
- In humans, there are normally 12 pairs of ribs.
- The first 7 are true ribs as they are attached directly to the sternum by costal cartilages.
- The 8th - 10th pairs are false ribs as they do not join the sternum directly but are connected to the 7th rib by cartilage.
- The 11 and 12th ribs are known as floating ribs which are only connected to a person's backbone and not to the sternum.
Hence option D is correct.
Question 2
1 / -0

Heaviest vertebra in man is

A
Atlas

B
Axis

C
Lumbar

D
Thoracic

Solution

Humans have 5 lumbar vertebrae. They are largest, strongest vertebrae; adapted for attachment of back $$L_1$$ - $$L_5$$ muscles. The lumbar vertebrae support back muscles; allow forward and backward bending of spine.
Question 3
1 / -0

7 pairs of true ribs are present in the

A
Rabbit

B
Man

C
Both of the above

D
None of the above

Solution

The rib cage appears like a bony basket formed by the sternum, thoracic vertebrae and in mammals, 12 pairs of ribs. The rib cage protects the internal organs of the chest. It also supports the chest wall, preventing it from collapsing. Each pair of ribs is attached dorsally to a separate vertebra. Of the 12 pairs of ribs, the first 7 are attached ventrally to the sternum, the next 3 are attached indirectly by cartilage and the last 2, the floating ribs, have no attachments to the sternum. The first 7 pairs of ribs are called as 'true ribs'. Their number is same in both man and rabbit.
Question 4
1 / -0

Synovial fluid is secreted by

A
Blood

B
Cartilage

C
Bone

D
Synovial membrane

Solution

Membranes are thin pliable layers of epithelial and/or connective tissue. They line body cavities, cover surfaces, connect, or separate regions, structures and organs of the body.
The three kinds of membranes are mucous, serous and synovial.
Synovial membrane, unlike to other membranes does not contain epithelium. Therefore, it is not the epithelial membrane. It lines the cavities of the freely movable joints. Like serous membrane, it lines structures, that do not open to the exterior. Synovial membranes secrete the synovial fluid that lubricates articular cartilage at the ends of bones as they move at joints.
Question 5
1 / -0

In humans, the joint between bones of skull is

A
Fibrous joint

B
Hinge joint

C
Synovial joint

D
None of the above

Solution

According to functional classification joints may be immovable (synarthrosis), slightly movable (amphiarthrosis) and freely movable (diarthrosis).
According to structure joints can be classified into, fibrous, cartilaginous and synovial.
In fibrous joints, fibrous connective tissue unites articulating bones. No joint cavity is present. They are mostly immovable or slightly movable.
Sutures (literal meaning to stitch), are immovable joint found between skull bones.
There are four main sutures in the skull-
(a) Coronal suture: between the frontal and the two parietal bone.
(b) Sagittal suture: between the two parietal bones.
(c) Lambdoidal suture: between parietal and occipital bone.
(d) Squamosal suture: between parietal bone and temporal bone.
Question 6
1 / -0

Total number of vertebra in man is

A
30

B
33

C
40

D
35

Solution

The vertebral column in adult man comprises of 26 bones-
Cervical vertebrae (7), Thoracic vertebrae (12), Lumbar vertebrae(5), Sacrum (5 fused bones), Coccyx (3 to 5 fused bones).
In a child, there are 33 separate vertebrae, the 9 in the sacrum and coccyx not yet being fused.
Question 7
1 / -0

Os Innominatum consist of

A
Pubis

B
Ischium

C
Ilium

D
All of the above

Solution

"Os Innominatum bone" also known as 'hip bone' or 'pelvic bone' or 'coxal bone', is a large flat bone, constricted in the center and expanded above and below. In some vertebrates (including humans before puberty) it is composed of three bones: ilium, ischium, and pubis.
Question 8
1 / -0

Cervical vertebrae are characterized by the presence of

A
Long neural spine

B
Odontoid process

C
Vertebral-arterial-canals

D
None of the above

Solution

There are 7 cervical vertebrae. All cervical vertebrae have apertures in their transverse processes, known as Foramina transversalis, which form vertebro-arterial-canals on either side for vertebral artery to pass through to supply brain and spinal cord.
Question 9
1 / -0

Friction is lessened in ball and socket joint by

A
Coelomic fluid

B
Synovial fluid

C
Pericardial fluid

D
Mucin

Solution

Synovial joints are characterised by the presence of a fluid filled in synovial cavity, between the articulating surfaces of the two bones. Such an arrangement allows considerable movement by reducing friction between bones. These joints help in locomotion and many other movements. Ball and socket joint (between humerus and pectoral girdle), hinge joint (knee joint), pivot joint (between atlas and axis), gliding joint (between the carpals) and saddle joint (between carpal and metacarpal of thumb) are some examples.
Question 10
1 / -0

Sacroiliac joint is

A
Movable

B
Immovable

C
Imperfect

D
None of the above

Solution

The sacroiliac joint connects the sacrum (triangular bone at the bottom of the spine) with the pelvis (iliac bone, that is part of the hip joint) on each side of the lower spine. It transmits all the forces of the upper body to the pelvis and legs. There is not a lot of motion in the joint and it is very strong and stable.

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Locomotion and Movement Test - 17

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Locomotion and Movement Test - 17

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Question 1

6 pairs

5 pairs

3 pairs

2 pairs

Solution

Question 2

Atlas

Axis

Lumbar

Thoracic

Solution

Question 3

Rabbit

Man

Both of the above

None of the above

Solution

Question 4

Blood

Cartilage

Bone

Synovial membrane

Solution

Question 5

Fibrous joint

Hinge joint

Synovial joint

None of the above

Solution

Question 6

30

33

40

35

Solution

Question 7

Pubis

Ischium

Ilium

All of the above

Solution

Question 8

Long neural spine

Odontoid process

Vertebral-arterial-canals

None of the above

Solution

Question 9

Coelomic fluid

Synovial fluid

Pericardial fluid

Mucin

Solution

Question 10

Movable

Immovable

Imperfect

None of the above

Solution

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