Chapter 2-Anatomical Terminology Flashcards
Standard Anatomical Position
human stands, looking forward, feet together and pointing forward, arms alongside the trunk with palms facing forward and thumbs pointing away from the body
axial skeleton
bones of the trunk including vertebrae, sacrum, ribs, and sternum
appendicular skeleton
bones of limbs including the shoulder and pelvic girdles, and hands and feet
sagittal/midsagittal/median/midline
divides the body into symmetrical right and left halves
parasagittal section
any planar slice through the body that parallels the sagittal plane
coronal/frontal plane
passes through the bregma and divides the body into anterior and posterior halves
paracoronal section
any planar slice through the body that parallels the coronal plane
transverse/horizontal plane
slices the body at any height but always passes perpendicular to sagittal and frontal planes
hominid
zoological family of primates to which humans and their immediate ancestors and near-relatives belong
orthograde
trunk upright
pronograde
trunk horizontal
superior
toward the head of the hominid body
cephalic/cranial
synonymous with superior, can also be used for quadrupeds
inferior
body parts away from the head
caudal
toward the tail
anterior
toward the front of the hominid body
ventral
toward the belly, “anterior” for quadrupeds
posterior
toward the back of the individual
dorsal
“posterior” (toward the back) for quadrupeds
medial
toward the midline
lateral
away from the midline
proximal
nearest the axial skeleton, usually used for limb bones
distal
farthest from the axial skeleton
external
closer to the surface
internal
deeper inside
extrinsic
external to that which it acts upon
i.e. flexor pollicis longus, a muscle that flexes the thumb, is considered an extrinsic hand muscle because the belly of the muscle is found deep in the forearm rather than the hand itself
intrinsic
internal to that which it acts upon
i. e. flexor pollicis brevis is considered an intrinsic hand muscle because it is located entirely in the hand
endocranial
inner surface of cranial vault
ectocranial
outer surface of cranial vault
superficial
closer to the surface
subcutaneous
just beneath the skin
palmar
palm side of the hand
plantar
sole of the foot
volar
refers to both palmar and planter, “hollow” of feet and hands
dorsal
top of foot or back of hand
mesial
toward the midline point of the dental arch where the central incisors contact each other
distal (teeth)
opposite of mesial
lingual
toward the tongue
labial
towards the lips
buccal
toward the cheeks, usually reserved for premolars and molars
interproximal
area of tooth in contact with adjacent tooth
occlusal
facing the opposing dental arch, usually the chewing surface of each tooth
apical
at or towards the tip of the root
cervical
at, around, or pertaining to either the neck proper or to any number of anatomical constrictions referred to as “neck” or “cervix”
neck proper
portion of body between head and shoulders
incisal
biting or occlusal edge of the incisors
mesiodistal
axis running from mesial to distal
buccolingual/labiolingual
axis running from labial or buccal to lingual
origin (muscle)
less mobile attachment point anchoring muscle to bone
insertion (muscle)
site of muscle attachment with relatively more movement than the origin
flexion
generally, a bending movement that decreases the angle between body parts. by convention, flexion at the shoulder/hip joint refers to a ventral movement of the limb
extension
straightening movement increasing angle between body parts
abduction
movement of a body part (limb usually) away from sagittal plane. for fingers/toes, movement of the digit away from midline of hand/foot
adduction
movement of body part (limb usually) towards sagittal plane. for fingers/toes, closing the digits.
circumduction
a combination of abduction, adduction, flexion, and extension resulting in appendage being moved in cone-shaped path
I. e. driver signaling someone to pass
rotation
motion that occurs as one body part turns on an axis
opposition
motion in which body parts are brought together
pronation
rotary motion of forearm, turns palm from anteriorly facing (thumb lateral) to posteriorly facing (thumb medial)
supination
rotary motion of forearm returning palm to position where thumb is lateral
dorsiflexion
flexion of anterior portion of foot away from ground
plantarflexion/volarflexion
flexing the anterior portion of the foot inferiorly toward the ground at the ankle
eversion/pronation of the foot
turning the sole of the foot outward so that it faces away from the midline of the body
malleous
rounded protuberance adjacent to the ankle joint
boss
smooth, round, broad eminence
articulation
area where adjacent bones are in contact via cartilage or fibrous tissue at a joint
condoyle
rounded articular process
epicondyle
nonarticular projection adjacent to a condyle
head
a large, rounded, usually articular end of a bone
shaft/diaphysis (pl. diaphyses)
long, straight section between ends of a long bone
epiphysis
usually the end portion or extremity of a long bone expanded for articulation
neck
section of bone between head and shaft
torus (pl. tori)
bony thickening
ridge
linear bony elevation, often roughened
crest
a prominent, usually sharp and thin ridge of bone; often formed between adjacent muscle masses
line
raised linear surface, not as thick as a torus or as sharp as a crest
hamulus
hook-shaped projection
facet
small articular surface on bone, or tooth-to-tooth contact
ramus (pl. rami)
a branch
fossa (pl. fossae)
a depressed area, usually broad and shallow
fovea (pl. foveae)
pit-like, depressed area usually smaller than a fossa
groove
long pit or furrow
sulcus
long, wide groove
fontanelle
space between cranial bones of an infant
suture
where adjacent bones of the skull articulate
foramen (pl. foramina)
opening through a bone, usually a passage for blood vessels and nerves
canal
tunnel-like passage, usually extending from a foramen
canaliculus (pl. canaliculi)
very small passage or duct
meatus
short, wide canal
sinus
cavity within cranial bone
alveolus
tooth socket
allo-
other or different
apo-
separate, apart, away from, detached
brachi-, brachio-, -brachial
of, or relating to the arm, specifically the upper arm
brachy-
short
-cep, -ceps
head or heads
chondro-, -chondro-
cartilage or cartilaginous
cost-, -costal
related to a rib or ribs
cyt-, -cyte, or -cytic
a mature cell
dia-
across, through, or apart
dis-
undoing, removal, reversal, or absence
epi-
at, upon, close to, adjacent, above, or in addition
infra-
below or beneath
-itis
denotes inflammatory disease
lacri-, lacry-
of, belonging to, or related to tears
meta-
between or with
-oma (pl. omata)
growth or tumor
peri-
near or around, about
-physis (pl. -physes)
growth, projection, protuberance
-phyte
pathological outgrowth
platy-
broad and flat
retro-
having a location behind
splanchno-
related to the viscera or internal organs
-stitial
related to a place where something stands
-topic
place or usual location
-trophy
maintenance, nourishment
zygo-
denoting a joining or pairing
antebrachial
of, belonging to, or related to the forearm
antecubital
of, belonging to, or related to the front of the elbow
axillary
of, belonging to, or related to the armpit
buccal
of, belonging to, or related to the cheek
carpal
of, belonging to, or related to the wrist
cephalic
of, belonging to, or related to the head
cervical
of, belonging to, or related to the neck
cnemial
of, belonging to, or related to the shin or tibia
costal
of, belonging to, or related to the ribs
coxal
of, belong to, or related to the pelvis, hip, or hip joint
crural
of, belonging to, or related to the leg, specifically the lower leg or calf
cubital
of, belonging to, or related to the elbow
cutaneous
of, belonging to, or related to the skin
dermal
of, belonging to, or related to the skin
digital
of, belonging to, or related to the fingers or toes
dorsal
of, belonging to, or related to the back
femoral
of, belonging to, or related to the leg, specifically the thigh or upper leg
glossal
of, belonging to, or related to the tongue
hallucial
of, belonging to, or related to the big toe
lingual
of, belonging to, or related to the tongue
lumber
of, belonging to, or related to the loin or loyal back
manual
of, belonging to, or related to the hand
mental
of, belonging to, or related to the chin
nuchal
of, belonging to, or related to the nape, or back of the neck
orbital
of, belonging to, or related to the eye socket
patellar
of, belonging to, or related to the front of the knee
pedal
of, belonging to, or related to the foot
pollical
of, belonging to, or related to the thumb
popliteal
of, belonging to, or related to the back of the knee
tarsal
of, belonging to, or related to the ankle
temporal
of, belonging to, or related to the temples
thoracic
of, belonging to, or related to the chest
vascular
of, belonging to, or related to (usually blood) vessels