CHPT 8: APPENDCULAR SYS BONES Flashcards
appendicular skeleton function
-movement
what bones are included in the appendicular skeleton
upper and lower limbs
the function of the girdles in appendicular region
-girdles attach the limbs to axial skeleton
skeleton of the upper limb, per one side
- 1 clavicle and 1 scapula (pectoral girdle)
- 1 humerus
- 1 ulna
- 1 radius
- 8 carpals
- 19 metacarpals + phalanges
how many bones total does one side of the upper limb have?
32
greater and less tubercle location
anterior, lateral, proximal side of humerus
intertubercular sulcus (groove) location
between greater and less tubercle, on anterior laterl, proxmial side of humerus
intertubercular sulcus (groove) function
separate 2 tubercule
head of the humerus function
fit into glenoid cavity and form the glenuhumreral joint
location of the head of humerus, looking from an anterior view
proximal end, faces posteriorly
anatomical neck location
anterior, proximal, medical of humerus
-inferior to head
anatomical neck function
separates head from lateral end
which part of the humerus is prone to fractures
surgical neck
location of surgical neck
proximal, inferior/ distal to anatomical neck
structures on the proximal anterior of humerus
- greater and lesser tubercle
- intertubercular sulcus (groove)
- head
- anatomical neck
- surgical neck
structures on the distal anterior of humerus
- radial fossa
- lateral epicondyle
- capittulum
- coroniod fossa
- medial epicondyle
- trochlea
radial fossa function
flexing elbow causes head of radius to rest there
lateral epicondyle function
tendons of forearm attach here
capitulum function
articulates w/ head of radius
coronoid fossa function
flexing arm, trochear notch of ulna fits here
medical epicondyle function
tendons of forearm
trochlear function
articulates with trochlear notch of ulnda
radial groove location
posterior side of humerus
radial groove function
has radial nerve
deltiod tuberosity location
anterior humerus
what structure of the anterior humerus provides an attachment point of deltoid muscle
deltoid tuberosity
body shaft of anterior humerus function
-tendons of muscles coming from scapula that move elbow or shoulder joint enter
olecranon fossa function
olecran of ulna fits here
makes up the point bit of the elbow
olecranon fossa location
distal, posterior humerus
ulna anterior proximal structures
- radial notch
- trochlear notch
- coronoid proccess
- ulnar tuberosity
radial notch location
anterior, proximal, ulna
radial notch function
- head of radius fits into here
- proximal radioulnar joint
trochlear notch function
-fits into trochlea of humerus
ulnar tuberosity function
-tendons of forearms attach
ulnar tuberosity location
proximal, anterior ulna
styloid process of ulna and radius location
-articulates with carpal bones
location of olecranon
-proximal, posterior ulna
proximal, anterior radius structure
- head
- neck
- radial tuberosity
head of radius function
articulate with radial notch on ulna and capitulum on humerus
radial tuberosity function
tendons of biceps brachii insertion
which bone is shorter: ulna or radius?
radius
how many bones are there per hand
27
how many bones are in the wrist
8
how many bones make up the metacarpal
5
how are the metacarpals labelled
lateral to medial
how many bones are in the phalanges
14
proximal carpal bones
Scaphoid, Lunate, Triquetrum, Pisiform
distal carpal bones
Trapezium, trapezoid, capitate, hamate
which carpal is susceptible to fractures
scaphoid
does does capitate articulate with
metacarpal 3
which two carpal bones articulate with metacarpal 1 and 2
Traperzium and Trapezoid
scaphoid and lunate make up
the radoiocarpal joint
what does the hamate articulate with
metacarpal 4 and 5
muscles of the arm and forearm that move the elbow joint location on the plane
anterior and posterior
anterior muscles of the arm and forearm that move the elbow joint location on the plane function
flexors and synergisits
brachilais, brachioradilis and biceps brachia location
anterior muscles of the arm and forearm that move the elbow joint location on the plane
brachialis insertion
radius and ulna
brachialis origin
distal, anterior humerous
brachialis location
deeper to biceps
brachioradilis lnsertion
styloid process of radius
, brachioradilis origin
lateral, distal humerous
, brachioradilis movement
flex forearm, supination and pronation