Musculoskeletal System Review

When a soldier salutes to his superior, the movement of his lower arm may be described as

• extension.

• flexion.

• bending.

• straightening.

Tags

MS4

An example of a gliding joint is the

• Inter-carpal joint.

• radiocarpal joint.

• intervertebral joint.

• phalangeal joint.

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MS4

The point shown on the diagram as X where muscle is attached to bone is called the

• origin.

• agonist.

• insertion.

• fixator.

Tags

MS2

The role of calcium ions during muscle contraction is to

• prevent myosin heads from forming a cross bridge by binding to the actin molecules.

• bind to troponin, causing the myosin binding sites on the actin filament to become exposed.

• cause a change in the shape of the myosin cross bridges, resulting in a power stroke.

• attach to the myosin molecules, releasing them from the binding sites and repriming them.

Tags

MS1

Which statement concerning fibrocartilage is correct? Fibrocartilage is made up of

• coarse bundles of collagen fibres.

• web-like elastic fibres.

• invisible fine collagen fibres.

• branching collagen fibres.

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MS3

Which of the following represents a joint that can only perform flexion or extension?

• ball and socket

• hinge joint

• pivot

• gliding

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MS4

In the following diagram the movement of the left lower limb which has occurred in moving from position A to position B include:

• flexion at the hip and flexion at the knee

• flexion at the hip and extension at the knee

• extension at the hip and flexion at the knee

• extension at the hip and extension at the knee

Tags

MS4

In this contractile unit a sarcomere is:

• The area between two H lines

• The area between two A lines

• The area between two I bands

• The area between two Z lines

Tags

MS1

Fibrocartilage is found in the:

• nose

• trachea

• ends of long bones

• intervertebral discs

Tags

MS3

The type of cartilage shown in the diagram is best referred to as

• fibrocartilage.

• elastic.

• hyaline.

• articular.

Tags

MS3