Chapter 8 - Terms Flashcards
axial skeleton
central bony structure around which other parts move
appendicular skeleton
bones of the extremities, hips, and shoulders
cranium
domelike bone at the top of head. within it is the cranial cavity. it has 8 bones.
suture (bones)
where two bones meet / are fused
frontal bone
location: cranium
description: forehead and top of cranium, ends of coronal suture
parietal bones
location: cranium
description: the upper-posterior parts on both sides of cranium (2)
occipital bone
location: cranium
description: forms the posterior base of the cranium
temporal bones
location: cranium
description: lower sides of cranium (around ear and temples) (2)
sphenoid bone
location: cranium
description: a bone wedged between the frontal, parietal, and temporal bones
etymology: Greek sphen, “wedge”
ethmoid bone
location: cranium
description: the median of left and right nasal cavities, divides the orbits
etymology: greek ethmós, “colander, sieve”
foramen magnum
location: cranial / spinal cavities
description: opening in which spinal cord passes to join the brain
etymology: foramen - Latin for “opening”. magnum - Latin for “big”
mastoid process
location: head
description: projection from temporal bone behind the ear
etymology: Greek mastax, “jaws”
styloid process
location: head
description: point of attachment for ligaments to the hyoid bone
etymology: Latin stylus / stilus, “a pointed instrument”
facial area
nose, cheeks, lips, eyes, and related internal structures. contains 12 bones.
nasal bones
location: face
description: form the bridge of the nose and roof of the nasal cavity (2)
vomer
location: face
description: a narrow wall that forms the inferior part of the nasal septum and continues posteriorly to the sphenoid bone
latin: vomer, “plowshare” (cutting edge of a plow)
lacrimal bones
location: face
description: small, flat bones near the tear ducts within the eye sockets
etymology: Latin lacrima “tear”
zygoma(tic) bones
location: face
description: the cheekbones to the the eye socket (2)
etymology: Greek zygoma, “yoke” (that which connects 2 things)
maxilla
location: face
description: two maxillary bones fused at the midline, the upper part of the jaw (below nose) (2)
etymology: Latin maxilla “jaw”
palatine bones
location: face
description: form the posterior hard palate (2)
mandible
location: face
description: the lower jawbone
etymology: Latin mandibula, “jaw”
fontanel
soft spot on a baby that fuses together later with other fontanels to form bones in the skull, resulting in the coronal and sagittal sutures
ossicles
location: head
description: three bones in each middle ear in a chain formation (includes the malleus, incus, and stapes bone)
etymology: Latin ossiculum “little bones”, from os “bone”
hyoid
location: neck
description: u-shaped bone in the anterior neck, attached to ligaments
etymology: Greek huoeides, “shaped like letter u”
sternum / breastbone
location: chest
description: center of the anterior thorax
manubrium
location: chest
description: triangular shaped body of the sternum
etymology: Latin manubrium “handle”
xiphoid process
location: chest
description: inferior tip of the sternum
etymology: Greek xiphoeides, “shaped like a sword”
true ribs
location: chest
description: pairs 1-7 which are attached to both the vertebrae in the back and the sternum in the front directly
false ribs
location: chest
description: pairs 8-10 which are attached to the vertebrae in the back and the sternum in the front via cartilage
floating ribs
location: chest
description: pairs 11-12 which are only attached to the vertebrae
clavicle
location: chest
description: the collar bone
etymology: Latin clavicula, diminutive of clavis “key”
acromion
location: chest
description: bony process on the scapula
etymology: Greek akros “highest” + omos “shoulder”
scapula
location: chest
description: the shoulder bone / blade
etymology: Latin scapula “shoulder”
coracoid process
location: chest
description: hook like structure on the lateral edge of the scapula
etymology: Latin corax “raven” + -oid
glenoid fossa
location: chest
description: socket where humerus joins the scapula to form a joint
etymology: Greek, “a socket” + -oid + Latin fossa “ditch”
cervical vertebrae
location: back
description: C1-C7, the vertebrae of the neck
thoracic vertebrae
location: back
description: T1-T12, the chest (joined to each rib)
lumbar vertebrae
location: back
description: L1-L5, the lower back
sacrum
location: back
description: five fused together vertebrae, joined to the pelvis and hips
coccyx
location: back description: the tail bone, a group of fused bones
atlas
location: coccyx description: the first vertebrae of the coccyx
axis
location: coccyx description: the second vertebrae of the coccyx
spinous process
location: back description: projection of vertebrae to the mid back
transverse process
location: back description: bony projection to the side
carpal bones
location: hand description: 8 small bones of the wrist joint
humerus
location: arm
description: long, upper arm bone, connected to the scapula at the glenoid fossa
metacarpal bones
location: hand description: five bones in each hand (one to match a finger)
phalanx
location: hand / feet description: fingers or toes at the end of each metacarpal / metatarsal
radius
location: arm description: long bone along the thumb side of lower arm
ulna
location: arm description: long bone along the pinky side of lower arm
olecranon
location: arm description: point of the elbow, a bony projection of the ulna
acetabulum
location: hips description: cup-shaped socket of the hip joint, inside the ilium and pubic bones
ilium
location: hips description: superior hip bone, joins the sacrum posteriorly
ischium
location: hips description: inferior hip bone - the seat bone
pelvis
location: hips description: hip bones + sacrum + coccyx
pubis
location: hips description: the bridge like bone anterior to the hip bones
pubic symphasis
location: hips description: mostly immobile joint between the two pubic bones
calcaneus
location: legs
description: the heel bone
femur
location: legs description: the long bone of the upper leg (thigh bone)
fibula
location: legs description: thin bone of lower legs, little toe side
hallux
location: legs description: the big toe
malleolus
location: legs description: bony projection of distal tibia / fibula, sometimes mistakenly called ankle bones
metatarsal
location: legs description: five bones of the mid foot, one per toe
patella
location: legs description: the kneecap
tarsal
location: legs description: seven bones in the ankle joint
tibia
location: legs description: large bone of lower leg on great toe side, the shin bone