Upper Extremity Anatomy

These flashcards cover key concepts regarding upper extremity anatomy, including bones, joints, and their classifications.

What bones make up the hand and wrist?

27 bones: 14 phalanges, 5 metacarpals, 8 carpals.

How many phalanges are in the thumb?

The thumb has 2 phalanges.

What are the types of joints between phalanges?

Interphalangeal (IP) joints, classified as synovial, diarthrotic, hinge type.

What is the anatomical position from lateral to medial for digits?

Digits are numbered #1 (thumb) to #5 (little finger).

What is the classification of the metacarpophalangeal (MCP) joints?

Classified as synovial, diarthrotic, ellipsoidal type.

What are the two rows of carpals in the wrist?

Proximal Row: scaphoid, lunate, triquetrum, pisiform; Distal Row: trapezium, trapezoid, capitate, hamate.

What structure is formed by the proximal ends of the ulna and radius?

Proximal radioulnar joint.

What type of joint is the elbow classified as?

It is a diarthrodial joint.

What are the main functions of the shoulder girdle?

Connects the arm to the trunk and allows for a wide range of motion.

What bones are involved in the shoulder anatomy?

Clavicle and scapula.

Where does the head of the humerus articulate?

It articulates with the scapula to form the shoulder joint.

What features are involved in the distal end of the humerus?

Medial epicondyle, lateral epicondyle, trochlea, capitulum.