10 Questions
How many carpal bones support the wrist?
8 carpal bones
How many phalanges support each finger?
Three phalanges
Where is the exclusive movement of opposition permitted?
First carpometacarpal joint
Where are the movements of the second to fifth digits permitted?
Metacarpophalangeal, proximal, and distal interphalangeal joints
Which bones make up the shoulder girdle?
Clavicle and scapula
What is the name of the joint where the clavicle articulates with the axial skeleton?
Sternoclavicular joint
Which bone of the arm meets the scapula to form the shoulder joint?
Humerus
What movements are permitted by the elbow joint?
Flexion and extension
What movements are permitted by the radioulnar joints?
Pronation and supination
In which direction does the palm face during supination and pronation?
Upwards in supination and downwards in pronation
Study Notes
Upper Limb Anatomy
- The wrist is supported by 8 carpal bones.
- Each finger has 3 phalanges, except for the thumb, which has only 2.
- The exclusive movement of opposition is permitted in the thumb, allowing it to touch the other fingers.
Hand Movement
- The movements of the second to fifth digits are permitted in the metacarpophalangeal joints.
Shoulder Girdle
- The shoulder girdle is made up of the scapula and clavicle.
- The joint where the clavicle articulates with the axial skeleton is called the sternoclavicular joint.
- The humerus meets the scapula to form the shoulder joint, also known as the glenohumeral joint.
Elbow Joint
- The elbow joint permits flexion, extension, and rotation of the forearm.
Radioulnar Joints
- The radioulnar joints permit pronation and supination of the forearm.
Forearm Movement
- During supination, the palm faces anteriorly, while during pronation, the palm faces posteriorly.
Test your knowledge about the bones and regions of the shoulder girdle, including the pectoral, axilla, and scapular regions. Learn about the articulations of the clavicle and scapula, and the mobility of the scapula.
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