Dr. Martin's notes

Tuesday September 6, 2016

Osteology 2

Terminology:
Cartilage (discuss-equals bone without hard material)
Cervical, thoracic, lumbar, sacrum, pelvis
Articular Capsule
Spinal Disc= Annulus+Nucleus
Acromion
Motor Unit

Skeleton consists of 206 bones
Cranium (Skull) 28 including facial bones
Vertebrae 26
Ribs 24
Upper extremities including shoulder 64
Lower extremities including pelvis 62
1 Hyoid
1 Sternum
Spine = 7 Cervical (neck), 12 Thoracic (middle back) with ribs attached, 5 lumbar, 1 sacral & 2 pelvic
Vertebra(e) consist of a body (weight bearing part), lamina & pedicles (which form arch), spinous process and 4 articular processes

Scapula(e) - Flat Bone
Has a fossa for articulation of arm (humerus) and joint for artic. with clavicle (collar bone)

Sternum - Flat bone
Protects the chest. Articulates with ribs through cartilage

Clavicle - Long bone
Goes from the sternum to the scapula
Meets with the scapula at the Acromio-Clavicular Joint (AKA A/C joint), a common site for injury or separation

Arm - Consists of 3 bones
Upper arm = humerus - proximal is shoulder, distal is elbow
Lower arm = radius and ulna
In anatomical position, ulna is on the little finger side
Proximal end is elbow, distal end is wrist

Hands = carpal b., metacarpals & phalanges
Dislocation and fx very common

Ribs - Flat bone
Articulate with spine in back and with cartilage in front for 1-10.
11 & 12 are "floating ribs" and have no front attachment