bony landmarks Flashcards
spinous process fun fact
C7 has the most prominent spinous process
transverse process fun fact
lateral costotransverse ligaments connect the posterior surface of the tip of the transverse process to the nonarticular part of the tubercle of the analogous rib
ribs fun fact
-ribs 1-7 are true ribs; have direct attachment to the sternum
-ribs 8-10 are false ribs- indirect attachment to the sternum (fuse with 7th rib)
-11 and 12 are free floating- no attachment to the sternum
posterior surface of sacrum fun fact
erector spinae group of muscles originate here
median crest of sacrum fun fact
-fusion of the first three sacral spinous processes
sternum; manubrium, jugular notch, sternal angle, body, xiphoid process fun fact
jugular notch: depression in between where the clavicles attach
sternal angle: 2nd rib
body: ribs 3-6
manubrium: clavicle sternal end and 1st
xiphoid process: for rectus abdominus to insert, and rib 7
external occipital protuberance fun fact
upper trapezius originates here
mandible; angle, condyle and coronoid process fun fact
temporalis inserts on coronoid process
medial pterygoid (& masseters) inserts on angle of mandible
the condyle is an articular surface in the tempomandibular joint disc (TMJ)
zygomatic arch fun fact
where the masseters originate
scpaula; spine, coracoid process, acromion, inferior angle, medial border, lateral border, infraspinatus fossa, supraspinatus fossa
fun facts
spine: middle trapezius fibers insert or deltoid originates
coracoid process: biceps originate here
acromion: lateral fibres of deltoid originate here
inferior angle: teres major attaches to inferior lateral scapula\
–> paralysis of serrates anterior can caused winged scapula where inferior angle sticks out
medial border: serrates anterior attaches to anterior surface of medial border
lateral border: teres minor originates at superior lateral border
infraspinatous fossa: : infraspinatus muscle originates here
supraspinatous fossa: : supraspinatous muscle originates here
clavicle; sternal end, acromial end, body fun facts
sternal end: the clavicle articulates with the manubrial portion of the sternum, forming the sternoclavicular joint (SC joint)
acromial end: the acromioclavicular joint attaches the acromion to the clavicle here
body: the clavicular head of the pectoralis major attaches to the clavicle
Humerus (greater tubercle, lesser tubercle, medial epicondyle, and lateral epicondyle):
fun facts
Medial epicondyle serves as attachment point to almost all flexor muscles of the forearm (i.e. flexor carpi radialis)
Lateral epicondyle serves as attachment point for almost all extensor muscles of the forearm (i.e. extensor digitorum)
Lesser tubercle; subscapularis inserts here
Greater tubercle; supraspinatous and infrapsinatous insert here
Ulna (head of the ulna, olecranon process): fun facts
Triceps inserts on the olecranon process
Head of the ulna is distal and articulates with the ulnar notch on the radius and with the triangular articular disc in the Wrist Joint.
Radius (styloid process): fun facts
Brachioradialis inserts at the styloid process
-it’s the most distal part of the radius
carpal bones (scaphoid, pisiform, hook of hamate): fun facts
Scaphoid is the floor of the anatomical snuff box
Pisiform; most lateral of 1st row of carpal bones, part of carpal arch, abductor digiti minimi originates here
Hook of hamate: flexor digiti minimi and opponnens digiti minimi orginate here
-most lateral of 2nd row of carpal bones