P. 405 - 410 Flashcards
Lateral 1/3 of clavicle is…
Flat and concave anteriorly
The medial 2/3 of the shaft of clavicle are…
Convex anteriorly
The clavicle functions(3)
Transmits shocks from the upper limb to the axial skeleton
Forms one of the boundaries of the cervicoaxiallary canal affording protection to the neurovascular bundle supplying the upper limb
Serves as a strut from which the scapula and free limb are suspended, keeping the limb away from thorax so that the arm has max rom
The clavicle has no _____ cavity.
Medullary (marrow)
It consists of spongy (Trabecular) bone and a shell of compact bone.
The scapula over lies which ribs?
2 - 7
Superolaterally, the scapula has a glenoid cavity, which….
Articulates with the head of the humerus at the glenohumeral joint. Serves as a socket for the head of the humerus. Smaller thn it doe
The intertubercular sulcus of the humerus separates?
The greater and lesser tubercles
Shaft of humerus has two prominent features…
Laterally is the deltoid tuberosity
Inferiorly is the radial groove
Capitulum
Lateral articulation of the humerus with the radius
Trachlea
Medial humeral articulation with the trochlear notch of ulna
The jugular notch is between?
The elevated eternal ends of the clavicle
Coronoid fossa
Receives the coronoid process of the ulna during full flexion of the elbow
Superior to trochlea
Posteriorly the olecranon fossa
Accommodates the olecranon of the ulna during extension of the elbow
Superiorly to the capitulum anteriorly, the shallow ______ fossa accommodates the edge of the head of the radius when he elbow is fully ____.
Radial fossa
Fully flexed
The stabilizing bone of the forearm?
Ulna
The proximal end of the ulna has two proximal projections..?
Olecranon posteriorly
And coronoid process anteriorly
The ulna is separated from the carpals by….
by a fibrocartilaginous articular disc
Head of the radius articulates medially with…
Radial notch of ulna
The ulna ___ while the radius ____ as they pass distally.
Ulna thins out
Radius thickens
Ulnar notch location
Located distally on the medial aspect of the radius.
Lateral aspect of the radius terminates distally via….
Radial styloid process
The ulna does not articulate directly with the carpal bones. It is separated from the carpals by a …
Fibrocartilaginous articular disc.
Ulnar styloid process is smaller than the radial s.p.? True/false
True
The proximal surfaces of the proximal row of these carpals articulate with the inferior end of _____ and the ____.
of the radius
articular disk of the wrist joint
Deep to the pectoral fascia and the pec major is another fascial layer…
The clavipectoral fascia, which descends from the clavicle, enclosing the subclavius and then the pectoralis minor…
Becomes continuous inferiorly with the axillary fascia.
