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Ch. 8 Anatomy

Ch. 8 anatomy

Appendicular skeleton 126 bones
pectoral girdle 4 bones
upper limb 60 bones
pelvic girdle 2 bones
lower limb 60 bones
(pectoral Girdle) Clavicle S-shaped *acromial end(lateral)___sternal end(medial)
fact of clavicle fractures are fairly commone b/c they are small and fragile
(pectoral girdle) Scapulae triangle shaped
pectoral girdle Glenoid cavity where humerus articulates with the scapula
(pectoral girdle) acrimion where the clavicle articulates with the clavicle
Humerus Head articulates with scapula at glenoid cavity
epicondyles processes that develop proximal to articulation
condyle where the humerus articulates with the radius and ulna and is divided into trochlea (medial part) region...joins with ulna and capitulum (lateral part) region....joins with radius
ulna medial to radius, olecranan is superior end of ulna (where joins radius)
distal radioulnar joint where the lateral surface of the ulnar head articulates with the radius
aticular disc piece of cartilage that articulates with carpals
radius lateral bone of the forearm
radial head articulates w/ humerus(at the capitulum)
styloid process articulates with the wrist on the distal end
carpals 8 bones of wrist *2 rows of four
1st row of wrist (proximal carpal bones) triquetrum, lunate, scaphoid, pisiform
2nd row of wrist (distal carpal bones) hamate, capitate, trapezoid, trapezium
metacarpals articulate with 4 distal carpals - proximal, articulate with proximal phalange - distal (5)
phalange 14 each hand
first finger POLLEX (thumb), has 2 phalanges
fingers 2-5 each other finger has 3 phalanges: proximal, middle, distal
pelvic girdle 2 coxal bones
formed by fusion of 3 parts 1. ilium, 2. ischium, 3. pubis
pubis joined in the anterior, called pubic symphysis by median fibrous cartilage pad
acetabulum socket for femur to fit
sacroiliac join auricular surface of the ilium articulates with the auricular surface of the sacrum
Pelvis - differences 1. female smoother & lighter 2. female has less-prominent markings 3. greater angles and curvatures for childbearing reasons in females
femur strongest, heaviest, & longest bone in the body
femoral head fits into the acetabulum of pelvis on the proximal end
medial and lateral condyle articulate with tibia on the distal end
patella large sesamoid bone (enclosed w/in the tendon of the quadricep femoris
tibia largest bone of lower leg and located medially on lower leg, articulates w. the femur on the proximal surface
medial malleolus part of tibia that sticks out on the lower medial part of tibia
fibula smaller par tof lower leg bone, located laterally on lower leg, does not artuculate with femur
lateral malleolus knot found on lateral part of lower leg
tarsals 7 bones in ankle
talus transmits weight from the tibia to the toes
calcaneus heel bone, largest of tarsals, site of attachment for achilles tendon
cuboid ant. to calcaneus
navicular ant. to talus
cuneiform bones medial, intermediate, lateral
metatarsals 5
phalanges toeas are same as hand
longitudinal arch calcaneus to metatarsals
transeverse arch medial to lateral borders of foot
male differneces. heaviers & rougher, weight: heavier, pelvis under 90, cranium 10% L, pelvis narrow
female differences ligher & smoother, lighter, greater than 100D, cranium 10% S, pelvis broader
Created by: britlee14