HMS, BM EQ-Bank 18

Using an example from the shoulder girdle, explain how the arrangement of bones and joints allows for effective throwing movements. (3 marks)

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Sample Answer

Shoulder girdle arrangement features:

Clavicle connects to sternum
Scapula connects to humerus

Movement capabilities:

Sternoclavicular joint enables:
- Clavicle elevation
- Clavicle rotation
Scapula moves freely on rib cage

Combined joint actions:

Glenohumeral (ball and socket) joint
Allows throwing movements through:
- Arm elevation
- Rotation
- Follow-through

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Sample Answer

Shoulder girdle arrangement features:

Clavicle connects to sternum
Scapula connects to humerus

Movement capabilities:

Sternoclavicular joint enables:
- Clavicle elevation
- Clavicle rotation
Scapula moves freely on rib cage

Combined joint actions:

Glenohumeral (ball and socket) joint
Allows throwing movements through:
- Arm elevation
- Rotation
- Follow-through