Bones of the Upper Limb Flashcards
(16 cards)
Outline the four regions of the upper limb
Pectoral girdle
Arm
Forearm
Hand
What bones make up the pectoral girdle
Scapula and clavicle
What bones make up the arm
Humerus
What bones make up the forearm
Radius and ulna
What bones make up the hand
The carpals(8) 2 rows of 4
The metacarpals
The phalanges
Where does the medial and lateral end of the clavicle articulate respectively?
Medial- Manubrium
Lateral - acromion process of the SCAPULA
Describe the different component of the scapula and its function
Acromion- articulates with clavicle
Gleniod fossa- articulate with humerus
Scapular spine - divides scapula into INFRA AND SUPRA SPINOUS fossa
Coracoid process
Describe the bony features of the HUMERUS
Has lateral and medial EPICONDYLES - close to the Elbow joint Deltoid tuberosity (posterior) Radial groove Greater and lesser tubercle Bicipital groove
How are the radius and ulna connected?
Connective tissue called INTEROSSEUS membrane
Describe the articulation sites for the bones of the forearm
The radius and ulna
Promixal end articulate at condyles of humerus
Distal end articulate with proximal carpal bones of the wrist
What is the function of the interosseus membrane?
Acts as site of muscle attachment
Contributes to stability of the arrangement
What is the importance of the radial tuberosity
Important for the attachment of the bicep brachii muscle
The Bone of the forearm articulate with the proximal row of the carpal bone except which one
Pisiform
Outline the proximal row of the carpal bone from distal to proximal
In ANATOMICAL POSITION
Scaphoid
Lunate
Triquetrium
Pisiform(attached anteriorly to the triquetrium)
Outline the distal row of carpal bones from distal to proximal?
IN ANATOMICAL POSITION
Trapezium
Trapezoid
Capitate
Hamate
How many phalanges does each digit contain? ANY exception
All have 3 EXCEPT the thumb which has 2
Each phalange has a base, a shaft and a distal head
