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| Phalanges: fingers |
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| Metacarpals: form the palm of the hand |
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| Radius: the lateral forearm bone |
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| Ulna: the medial forearm bone |
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| Humerus: the upper arm bone |
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| Scapula |
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| Clavicle |
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| Carpals: several bones of the wrist |
The clavicle and scapula form the pectoral girdle.
The carpals are arranged into two rough rows of four bones each. The most distal row, from medial to lateral, are: the hamate, capitate, trapezoid, and trapezium. Each of these four carpal bones articulates with at least one of the phalanges. The hamate articulates with two phalanges. The more proximal row, from medial to lateral, are: the pisiform, triquetrum, lunate, and scaphoid.
There are 14 phalanges. Each finger has 3 and the thumb has two.
There are five metacarpals.
The head of the humerus articulates with the glenoid cavity of the scapula. Distally the humerus articulates with both the radius and the ulna.
Landmarks of the Anterior Humerus
A | Head Articulates with the glenoid cavity of the scapula. |
B | Greater Tubercle In between the tubercles is the intertubercular groove. |
C | Lesser Tubercle |
D | Deltoid Tuberosity |
E | Lateral Epicondyle |
F | Capitulum Articulates with the radius. |
G | Trochlea Articulates with the ulna. |
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H | Medial Epicondyle |
I | Coronoid Fossa |
The posterior humerus has a depression above the trochlea called the olecranon fossa.
Bones of the Forearm
A | Head of the Radius: articulates with the humerus' capitulum, and with the ulna's radial notch. |
B | Olecranon: is proximal and posterior |
C | Coronoid Process: fits into humerus' coronoid fossa |
D | Styloid Process of the Radius |
E | Styloid Process of the Ulna |
The head of the radius is proximal, but the ulna's head is distal. The ulna does not articulate with the wrist.
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