ANAT 260 WCU CH 7

sacroiliac joint (sacrum and ilium)

The connection point between the axial and the appendicular skeletons

wrist

-8 wrist bones -in 2 rows 4 in each row -carpal bones -5 bones rise thumb to pinky: metacarpals (bones that make back of your hand)

femur

-head is bigger than humerus -greater and lesser trochanter -bw these there is intertrochanteric line in anterior view -bw greater and lesser trochanter dorsal aspect we have intertrochanteric crest much thicker and rougher -diaphysis and distal epiphysis -condylar process -epichondral site of attachment for muscles -dorsal view: rough line called lina aspera (site of attachment of muscles called abductor muscles) -condyle seen better in dorsal view

patella

-kneecap -biggest sesamoid bone -provides support for tendons and esp quads

in forearm area there is 2 bones

-lateral: radius -medial: ulna -bw the two there is interosseous membrane (makes sure these two bones stay together) -ulna and radius have two joints: proxioradial ulnar joint and distal radial ulnar joint

pelvis

-male vs female -greater pelvis: widest part of pelvis -pelvic outlet: smallest part of pelvis -ischial spines (distance between greater pelvis and pelvic inlet is pelvic outlet very narrow)

male pelvis

-more contracted and narrow -angle between 2 pubic bones is less than 90 degree -ala ilia in male is more contracted and pulled inward -coccyx is more pushed forward -distance bw pelvic outlet is more contracted

posterior view of ulna

-olecranon process (dorsal view) -goes into olecranon fossa of humerus -anterior view: coronoid process that when you bend your arm it goes up and fits into coronoid fossa -between olecranon and coronoid articular surface is created in C shape: trochlear notch and that covers into trochlear process of humerus -capitulum will fit into head of radius -trochlea of humerus gets into trochlear notch of ulna -radial tuberosity: one of the places your biceps brachial muscle attaches to it -distal end of radius: styloid process of radius (and one of ulna) (bump toward end of forearm above wrist!)

hip bones

-right and left -merch of 3 bones together (ilium, ischium, and pubis) -these 3 bones are held together by cavity called acetabulum

clavicle

-s shaped bone with one end attached to manubrium (or sternum) -this end is called sternal end of clavicle -sternoclavicular joint ^ -other end joins with scapular at acromioclavicular joint -scapular end of clavicle is where joint is shaping

humerus

-very shallow head covered by cartilage -tiny neck -greater and lesser tubercular boney processes -between them is groove called intertubercular sulcus -body has rough surface on lateral side called deltoid tuberosity (attachment of muscle or ligaments or tendons) (groove is radial groove) -distal end: medial epicondyle (part of bone that participates in joint) (epi=above condyle) site of attachment of muscles -anterior view there is a fossa or depression called coranoid fossa which later on will accept coranoid process of ulna -posterior view greater tubercular is visible -another fossa here known as olecranon fossa that is where olecranon process of ulna is about to get fit into it

frontal view of scapula

-wide area facing ribs (dorsal aspect of ribs are facing anterior aspect of scapula called subscapular fossa) -lateral end we have socket or area where head of humerus or arm bone will be accepted that is called glenoid cavity -on same side we see the boney process called coracoid process visible in anterior view of scapula -acromion (large process) -superior boarder called scapular notch or superior notch -superior angle -inferior angle -dorsal view: scapular spine -as it goes toward lateral it becomes broad and expanded (acromion) -space above spine is supraspinous fossa and below is infraspinous fossa

female pelvis

-wider for baby -angle between 2 pubic bones its 100 degree or more -ala ilia in female is more stretched outward -coccyx is more pushed back -distance bw pelvic outlet is more stretched

metatarsals

1-5 from big toe to little

fibula

The lateral and smaller bone of the lower leg -outer side -malleolus -no articular surface with femur

tibia

The shin bone, the larger of the two bones of the lower leg. -inner side -malleolus (bumps on sides of ankles) -make articular surface with femur -all body weight carried here

ilium

appendicular skeleton

metacarpals

attach to digits -5 digits -each digit has 3 phalanges except thumb that only has 2

sacrum

belongs to axial skeleton

pubic symphysis

cartilaginous joint at which two pubic bones fuse together (this creates pelvis)

pectoral girdle

clavicle and scapula

bones in front of navicular

cuboid and 3 cuneiforms

lower limbs

femur, patella, tibia, fibula, tarsals, metatarsals, hallux and other digits

interosseous membrane

flexible membrane connecting radius and ulna & tibia and fibula

greater and lesser sciatic notch

greater: where sciatic nerve is located and passing through

ilium

has boney marks -iliac crest -posterior and inferior iliac spine -posterior and superior iliac spine

upper limbs

humerus, radius, ulna, carpals, metacarpals, pollex and other digits

pelvic girdle

ilium, ischium, pubis, hip bones (3 coxal bones)

?

in upper part of body joint bw clavicle and sternum is site where appendicular and axial meet

3 cuneiforms ( tarsal)

medial intermediate and lateral

hole through pelvis

obturator foramen (muscles move through this hole)

both tibia and fibula

participate in ankle joint -talus

tibial tuberosity

rough surface site where muscle called quadratus femoris and the tendon here attaches to tibial tuberosity

appendicular division of skeletal system

the part of the skeleton made up of the bones of the arms, legs, scapula, clavicle, and pelvis. contains 126 bones

surface of tibia

tibial plateau (participates with femur)

digits

toes 3 phalanges except big toe that has 2

pelvic inlet

where baby enters into pelvis proper