Bones of the Upper Limbs
Discipline: Medical Sciences (Anatomy, Physiology, Pharmacology etc.)
Type of Paper: Question-Answer
Academic Level: Undergrad. (yrs 3-4)
Paper Format: APA
Pages: 1
Words: 275
Question
Each upper limb has __ bones 30
There are __ carpals in the carpus, __ metacarpals in the metacarpus (palm), and __ phalanges in the hand. 8, 5, 14
the arm bone humerus
the longest and largest bone of the upper limb humerus
the humerus articulates proximally with the ______ and distally with the _____ and ______. scapula, ulna & radius
proximal
end of humerus features a rounded ______ that articulates with the
______ of the scapula to form the ____________ joint.
head, glenoid cavity, glenohumeral
distal to the head is the _____, which is visible as an oblique groove neck
What part of the humerus is the former site of the epiphyseal growth plate?
the neck
a
lateral projection distal to the anatomical neck, the most laterally
palpable bony landmark of the shoulder region immediately inferior to
the acromion of the scapula greater tubercle
an anterior projection of the humerus less tubercle
grove between greater and less tubercle of humerus intertubercular sulcus
a constriction in the humerus just distal to the tubercles where the head tapers to the shaftsurgical neck
Why is the surgical neck referred to as it is?
It is the site of many fractures
the
_____ of the humerus is roughly cylindrical at its proximal end but
gradually becomes ______ until it is flattened and broad at the distal
end
body, triangular
v-shaped area of humerus that serves as attachment point for tendons of the deltoid muscle deltoid tuberosity
rounded knob on the lateral aspect of the distal end of the humerus that articulates with the head of the radius capitulum
an anterior depression above the capitulum that articulates with the head of the radius when the forearm is flexed radial fossa
located
medial to the capitulum of the humerus, it is a spool-shaped surface
that articulates with the trochlear notch of the ulna trochlea
an anterior depression that receives the coronoid process of the ulna when the forearm is flexedcoronoid fossa
a large posterior depression that receives the olecranon of the ulna when the forearm is extended olecranon fossa
rough
projections on either side of the distal end of the humerus to which
the tendons of most muscles of the forearm are attached
medial and lateral epicondyles
bone located on the medial aspect of the forearm ulna
True or False? The ulna is longer than the radius. True
at the proximal end of the ulna is the _______ which forms the prominence of the elbow olecranon
an anterior projection of the ulna that that articulates with trochlea of the humerus coronoid process
a large curved area between the olecranon and coronoid process that forms part of the elbow joint trochlear notch
The distal end of the ulna consists of a ____ that is separated from the wrist by a disc of fibrocartilage head
located
on the posterior side of the ulna's distal end the ______ provides
attachment for the ulnar collateral ligament to the wrist
styloid process
smaller bone of the forearm that is located on the lateral aspect of the forearm radius
the radius is _____ at its proximal end and _______ at its distal end
narrow, widens
The
proximal end of the radius has a disc-shaped ____ that articulates with
capitulum of the _______ and the radial notch of the ____.
head, humerus, ulna
a
roughened area inferior to the neck on the anteromedial side that is a
point of attachment for the tendons of the biceps brachii msucle
radial tuberosity
the capitulum is to the head as the trochlea is to the ______coronoid process
the shaft of the radius widens distally to form a ______ on the lateral side which can be felt proximal to the thumb styloid process
the distal end of the radius articulates with three bones of the wrist to form the ________ joint
radiocarpal (wrist)
the radiocarpal joint joins the distal end of the radius with what three bones of the wrist? the lunate, the scaphoid, and the triqutrum
proximal region of hand made up of 8 carpals carpus
the eight carpals are joined together by ______ ligaments
Carpals are arranged in ___ transverse rows of ___ bones each. 2, 4
scaphoid, lunate, triquetrum, pisiform carpal bones in proximal row
trapezium, trapezoid, capitate, and hamate carpal bones of the distal row
boatlike carpal bone scaphoid
moon-shaped carpal bone lunate
three cornered carpal bone triquetrum
pea-shaped carpal bone pisiform
four-sided carpal bone with no two side parallel trapezium
a four-sided carpal bone with two sides parallel trapezoid
head-shaped carpal bone capitate
hooked carpal bone hamate
largest carpal bone capitate
In about 70% of carpal fractures only the _____ bone is broken. scaphoid
In the anatomical position, the first metacarpal is the most _____ bone lateral
There are __ metacarpals 5
the ____ of the metacarpals articulates with proximal phalanges (the knuckles) head
finger bones phalanges
there are __ phalanges 14
the ____ is the first phalange thumb
There are __ phalanges in each finger except in the thumb there are __ 3, 2
thumb pollex