A&P chapter 8 pt 2.

appendicular system

pectoral girdle

includes the clavicle & scapula

true ribs ( 1-7 )

direct cartilage connection to sternum

false ribs ( 8-10)

indirect cartilage connection (hop onto 7th rib)

floating ribs (11-12)

no cartilage connection. Function: protect kidneys

manubrium (sternum)

superior bone in sternum

angle sternum

manubrium + body of sternum

xiphoid process sternum

inferior part of sternum

clavicle

has sternal ends, coronial tubercle & acromial ends

scapula spine

on posterior surface

supraspinous fossa (scapula)

superior to the spine

infraspinous fossa (scapula)

inferior to the spine

subscapular fossa (scapula)

anterior surface of scapula

scapula

has acromion, coronoid process, & glenoid cavity

glenoid cavity

lateral

coracoid process

anterior

spine of scapula

posterior

arm proper (brachial region)

proximal. The humerus

forearm ( antebrachial region)

radius (lateral) ,& ulna (medial)

carpal region

contains 8 small bones (short bones)

metacarpal region

contains 5 bones in the palm

head of humerus

medial & articulates with the glenoid cavity of the scapula (ball & socket)

greater and lesser tubercles of humerus

greater→lateral to humeral head. Lesser→anteriorly (small bones)

intertubercular sulcus

between tubercles. Accommodates tendons of biceps muscle

capitulum of humerus

articulates with head of radius. Lateral condyle → articular surface (forms joint)

trochlea of humerus

articulates with ulna (medial)

olecranon fossa

Posterior pit that accommodates olecranon process of ulna when elbow is extended

radius

lateral bone of the forearm (radius goes to the thumb when anatomical position)

head of radius

articulates with capitulum on humerus. Radial notch on ulna

radial tuberosity

attachment site for bicep muscle

ulna

medial bone of the forearm (ulna goes to the pinky when anatomical position)

trochlear notch of ulna

C-shaped depression (hook-like) that articulates with trochlea of humerus

olecranon of ulna

elbow → olecranon fossa of humerus

coronoid process of ulna

anterior lip of trochlear notch

radial notch

accommodates head of radius

styloid process of ulna

distal end (head) has a bony point

interosseous membrane (IM)

between bone that attaches ulna and radius

carpal bones in wrist

8 carpal bones

scaphoid bone (carpal bone)

thumb side (curved bone)

pisiform (carpal bone)

pinky side (lateral) larger bump on pinky

capitate bone ( carpal bone)

center, largest bone

hamate bone (carpal bone)

medial to pisiform

metacarpal bones

bones of the palm

metacarpal 1

proximal base of thumb

metacarpal 5

proximal to base of pinky

phalanges

bones of the finger

proximal phalanx

1st bone after phalanges

middle phalanx

2nd bone after phalanges

distal phalanx

3rd bone after phalanges

what does the thumb lack?

middle phalanx

conoid tubercle (clavicle)

inferior

acromial ends (clavicle)

lateral

sternal ends ( clavicle)

medial (toward mid-line)