anatomy exam 2: upper extremity

what are the divisions of the skeletal system?

the axial and the appendicular.

what forms the bones of the fingers and how many are in one hand?

phalanges and 14

what is the first digit in the hand?

thumb

what are the different sections of the phalanges that make up the finger called?

distal, middle, and proximal

describe the parts of the phalanx

head, shaft, and base

what are the bones that form the palm of the hand? and how many are in one hand?

metacarpals and 5

which part of the metacarpals form the knuckles?

the head

describe the parts of the metacarpls?

head-distal, shaft-body, and extended base-proximal

where are the thenar eminences located?

at the base of the thumb

where is the hypothenar eminences located?

base of the 5th phalanx

what is the names of the proximal (lateral to medial) carpal bones?

1. navicular or the scaphoid

2. lunate or semilunar

3. triquetrum or cuneiform

4. pisiform

no: navicular stop: scaphoid

losers: lunate slimy: semilunar

tonight: triquetrum cocks: cuneiform

pussy: pisiform please: pisiform

what is the names of the distal (lateral to medial) carpal bones?

1. trapezium or greater multangular

2. trapezoid or less multangular

3. capitate or Os magnum

4. hamate or unieform (has hook)

what is the largest carpal bone?

Capitate (OS magnum)

what is the most frequently fractured carpal bone?

scaphoid or navicular

what carpal bone has a hook like process

Hamate or unciform

which carpal bone superimposes on the triquetrum?

pisiform

what bones form the interphalangeal joint?

the phalanges

what bones form the metacarpophalangeal joint?

the metacarpal and the proximal phalanges

what bones form the carpometacarpal joints?

the distal carpals and base of metacarpals

what bones form the intercarpal joints?

the carpal bones

what bones form the wrist joint?

scaphoid, lunate, triquetrum and distal radius

what are the forearm made up of?

radius and ulna

where is the radius located in relation to the forearm?

lateral

where is the unla located in relation to the forearm?

medial

what is the rounded proximal end of the radius that articulates with the capitulum?

head

what tendon attaches to the radial tuberosity?

biceps tendon

what notch is located on the distal end of the radius ?

ulnar notch

what is the styloid process?

the sharp pointed process located at the wrist

what is the blunt rounded proximal end of the ulna called?

olecranon process

what is the beak or crown like process located on the anterior surface of the proximal ulna?

coronoid process

the trochlea of the humerus articular with what part of the ulna

trochlear notch

what notch of the ulna articulates with the radius at the elbow?

radial notch

Where is the head of the ulna located?

distal end of ulna

when the elbow is extended, the olecranon process of the ulna fits into what part of the humerus?

olecranon fossa

when the elbow is flexed, the coronoid process of the ulna fits into what part of the humerus?

coronoid fossa

what type of joint is the elbow?

hinge

what is the elbow capable of?

flexion and extension

where does the head of the humerus articulate at?

glenoid fossa

the slightly constricted and obliquely directed portion of the humerus below the head is called?

anatomical neck

what tuberosity is on the lateral aspect of the humerus?

greater tuberosity

where is the lesser tuberosity located?

anterior medial humerus

what separates the greater and lesser tuberosities?

bicipital groove

the constriction below the tuberosities is called?

the surgical neck

what is just above the mid shaft on the humerus called?

deltoid tubercle

what muscle attaches at the deltoid tubercle?

deltoid

the radial fossa and the coronoid fossa are located where in aspect to the humerus?

distal

what is the deep depression on the posterior humerus called?

olecranon fossa

what articulates with the head of the radius?

capitulum of humerus; distal aspect

where is the ulnar groove located and what does it transmit?

between the medial and lateral epicondyle; passage way for the ulnar nerve

head of the radius

neck of the radius

radial tuberosity

rounded prominence that services for attachment of the bicep tendon

styloid process of the radius

sharp pointed process located @ the wrist

ulnar notch

depression on the medial aspect of the radius for attachment of the head of the ulna

olecranon process

proximal rounded posterior end of the ulna (highest point)

coronoid process

beak-like anterior process

trochlear notch (semilunar notch)

depression between the lunate process and coronoid process

radial notch (proximal)

depression on the lateral aspect for articulation of the head of the radius

head of the ulna

rounded distal end of ulna

styloid process of the ulna

sharp pointed process on the posterio-medial aspect

head of the humerus

anatomical neck of humerus

greater tuberosity

rounded prominence on the anteriolateral aspect of the humerus used to attach ligaments and tendons

lesser tuberosity

smaller rounded prominence on the anterior medial aspect of the humerus

bicipital groove

surgical neck of the humerus

deltoid tubercle

small prominence just above mid shaft

medical epicondyle

knob like process above the trochlea on medial distal end

lateral epicondyle

knob like process above the capitulum on lateral aspect

olecranon fossa

deep depression on the posterior, distal end of humerus

coronoid fossa

depression on anterior medial end of humerus

radial fossa

depression on anterior lateral aspect of the humerus

ulnar groove

between the medial epicondyle and trochlea

Where is the cubital fossa?

Anterior to the elbow joint