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