Skeletal System Flashcards
auditory ossicles
3 tiny bones in petrous part of each temporal bone are for hearing
malleous: superficial
incus: intermediate
stapes: deep
scoliosis
abnormal lateral curvature
kyphosis
extreme thoracic curvature
lordosis
exaggerated lumbar curvature
intervertebral discs
nucleus pulposus: deeper part of the disc (jelly like center)
anulus fibrosus: tough outer ring outside nucleus
atlantoaxial join
dens acts as a pivot for the rotation of the atlas and the skull (ligament helps stabilize)
what is the promontary portion on the sacrum?
lip that sticks out anteriorly on S1
What are the transverse ridges on the sacrum?
where the intervertebral discs would’ve been
where is the subscapular fossa on the scapula?
anterior, broad smooth surface, doesn’t have large ridge
posterior view of the scapula
coracoid process: anterior, looks like a c, by lateral attachment
acromion: posterior, tip of the shoulder
supraspinous fossa: above spine
infraspinous fossa: inferior to spine, large triangular flat area
where is the olecranon fossa on the humerus?
deep hole in the back of the humerus
iliac fossa - ilium
broad, flat area toward the top
anterior superior iliac spine - ilium
end of the crest
anterior inferior iliac spine - ilium
below superior, after the notch
arcuate line - ilium
ridge that separates the superior and inferior portion of the pelvis
iliac crest - ilium
upper border of the fossa
posterior superior iliac spine - ilium
back, where sacrum attaches, on rough part of ilium
posterior inferior iliac spine - ilium
below superior
posterior gluteal line - ilium
vertical plane
greater sciatic notch - ilium
large notch below posterior gluteal line
anterior gluteal line - ilium
in the crest
inferior gluteal line - ilium
above socket for femur
ischium
posterior region of os coxae
ischial spine - ischium
below greater sciatic notch
lesser sciatic notch - ischium
right below greater
ischial tuberosity - ischium
large rough area posteriorly, hamstrings attach
ischial ramus - ischium
on the loop formed by the ischium, right below acetebum
pubis
anterior region of os coxae
superior ramus - pubis
above ischium, more lateral
inferior ramus - pubis
above ischium, more medial
pubic crest - pubis
ridge, can be sharp, superior on pubis
pubic tubercle - pubis
bump anteriorly, edge of ridge
pubic symphysis - pubis
fibrocartilage, joint between pubis’
obturator foramen - pubis
large holes in the pelvis
pelvic brim
continuous oval ridge formed by pubic crest, pectineal line, arcuate line, and sacral promontory
true pelvis
lesser, large hole, houses organs of the pelvis
false pelvis
greater, where the iliac is, houses abdominal organs
fovea capitis
hole in the head of the femur
patella
base: round and superior
apex: pointy and inferior
tibial tuberosity
bump under patella
medial longitudinal arch
inner arch of the foot, heel to hallux (big toe), highest arch
lateral longitudinal arch
away from the midline of the foot, heel to fifth toe, lowest arch
transverse arch
medial to lateral on the foot, perpendicular to other arches, alone distal row of tarsals
articulation
joint, point of contact between one bone and another bone, cartilage, or teeth
arthrology
study of joints
fibrous joints
no joint capsules, held together by dense connective tissue
cartilaginous joints
no joint capsule, held together by cartilage
synocial joints
have joint capsule
synarthrosis degree of movement allowed
no movement
amphiarthrosis degree of movement
slightly moveable
diarthrosis degree of movement
freely moveable
