Tag: musculo - skeleton system

Questions Related to musculo - skeleton system

Which one of the following is the correct description of a certain part of a normal human skeleton ?

zoology musculo - skeleton system gait of animals basics of joints joints and type of joints skeleton, joints and muscles

  1. Parietal bone and the temporal bone of the skull are joined by fibrous joint.

  2. First vertebra is axis which articulates with the occipital condyles.

  3. The 9th and 10th pairs of ribs are.called the floating ribs.

  4. Glenoid cavity is a depression to which the thigh bone articulates.

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Correct Option: A
Explanation:

Fibrous joints are connected by dense connective tissue consisting mainly of collagen, also called immovable joints.

So, the correct option is 'Parietal bone and the temporal bone of the skull are joined by fibrous joint.'.

Sutures are

zoology musculo - skeleton system gait of animals basics of joints joints and type of joints skeleton, joints and muscles

  1. Movable joints

  2. Cracks in the skull bone

  3. Immovable joints

  4. Both B and C

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Correct Option: D
Explanation:

A suture is a type of fibrous joint, which only occurs in the skull (or cranium). They are bound together by Sharpey's fibres. These joints are synarthroses. A small movement is permitted at sutures, which contributes to the compliance and elasticity of the skull.

If a ligament is cut or damaged the joint becomes

zoology musculo - skeleton system gait of animals basics of joints joints and type of joints skeleton, joints and muscles

  1. Freely movable

  2. Immovable

  3. Unaffected

  4. Unstable

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Correct Option: D
Explanation:

The connective tissues which are found around joints are the ligaments and this help to stabilise the joint, maximise its strength and prevent any excess movement of the joints. The ligaments are attached to both sides of the bones and any tear or injury to the ligaments tends to make the joints unstable. So, the correct answer is option D.

Which one of the following membranes secretes a watery fluid that lubricates and cushions the joint ?

zoology musculo - skeleton system gait of animals basics of joints joints and type of joints skeleton, joints and muscles

  1. Tendons

  2. Ligaments

  3. Cartilage

  4. Synovial membrane

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Correct Option: D
Explanation:

The synovial membrane is the membrane that lines the articular surfaces of the bones of the synovial joint. Its secretes a watery fluid that lubricates and cushions the joint. It reduces the friction during movement.

Tendon is a cord of strong fibrous collagen tissue that connects muscles to bones and doesn't secrete any fluid. 
The ligament is a band of flexible fibrous connective tissue that connects bone to bone and doesn't secret any fluid. 
Cartilage is a tough and flexible material that acts as a cushion between the bones of joints and doesn't secret any fluid. 
So the correct option is D.