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Quiz One: Anatomial Terminology
Planes of Reference, Directional Terms, Motions of the Body, General Bone Features
94
Anthropology
Undergraduate 4
08/28/2011

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Term
Sagittal Plane
Definition
Divides the body symmetrically into right and left halves.
Term
Midsagittal Plane
Definition
Divides the body into symmetrical right and left halves.
Term
Median
Definition
Divides the body into symmetrical right and left halves.
Term
Midline
Definition
Divides the body into symmetrical right and left halves.
Term
Parasagittal Section
Definition

Divides the body into two parts in a line that is parallel to the midsagittal plane.

 

Term
Coronal Plane
Definition
Divides the body into anterior and posterior halves
Term
Transverse plane
Definition
Slices through the body horizontally, perpendicular to the sagittal plane
Term
Orthograde
Definition
trunk upright (in humans)
Term
Pronograde
Definition
trunk horizontal (quadrupeds)
Term
Superior
Definition
Toward the head end of the hominid body.
Term

Cephalic, Cranial

 

Definition
synonymous terms that can be used for bipeds and quadrupeds
Term
Inferior
Definition
Opposite of superior; body parts away from the head (human)
Term
Caudal
Definition
towards the tail (quadrupeds)
Term
Anterior
Definition
Towards the front of the hominid body.
Term
Ventral
Definition
Towards the belly (for bipeds and quadrupeds)
Term
Posterior
Definition
toward the back of the individual
Term
Dorsal
Definition
toward the back (quadruped)
Term
Medial
Definition
toward the midline (i.e. the left side of the tongue is medial to the left side of the mandible)
Term
Lateral
Definition
Away from the midline (i.e. the thumb is lateral to the pinky in standard anatomical position)
Term
Proximal
Definition
nearest the axial skeleton, usually used for limb bones (i.e. proximal end of humerus is nearest the shoulder)
Term
Distal
Definition
farthest from the axial skeleton (i.e. the distal end of the terminal foot phalanx fits into the front end of a shoe)
Term
External
Definition
outer
Term
Internal
Definition
inside
Term
Endocranial
Definition
inner surface of the cranial vault (i.e. the brain fills the endocranial cavity)
Term
Ectocranial
Definition
outer surfaces of the cranial vault (i.e. the temporal line is on the ectocranial surface of the parietal)
Term
Superficial
Definition
close to the surface
Term
Deep
Definition
far from the surface (i.e. the dentine core of a tooth is deep to the enamel)
Term
Subcutaneous
Definition
Just below the skin (i.e. the anteromedial surface of the tibia is subcutaneous)
Term
Mesial
Definition
toward the midline of the incisors (TEETH)
Term
Distal (TEETH)
Definition
Away from the midline of the mouth (i.e the distal half of a premolar is the posterior half of the tooth)
Term
Lingual
Definition
towards the tongue (TEETH)
Term
Labial
Definition
towards the lips (usually referring for incisors and canines, i.e. the labial surfaces of incisors are observed when a person smiles)
Term
Buccal
Definition
towards the cheeks (normally used for premolars and molars)
Term
Interproximal
Definition
in contact with adjacent teeth in the same jaw (i.e. dental floss goes into interproximal areas)
Term
Occlusal
Definition
facing the opposing dental arch (the chewing surfaces of the teeth)
Term
Incisal
Definition
the biting (occlusal) end of the incisors (the incisal edges of the incisors are used to bite into an apple)
Term
Mesiodistal
Definition
Axis running from mesial to distal
Term
Buccal/labiolingual
Definition
axis from buccal or labial to lingual (i.e. the incisors of Neanderthals often have large labiolingual dimensions)
Term
Palmar
Definition
palm side of the hand
Term
Planar
Definition
sole of the foot
Term
Dorsal
Definition
Top of the foot or back of the hand
Term
Circumduction
Definition
appendage being moved in a cone-shaped path (abduction and adduction, as well as flexion and extension are happening simultaneously)
Term
Rotation
Definition
motion that occurs as one body part turns on an axis (i.e. the head of the radius rotates on the distal humerus)
Term
Opposition
Definition
Motion in which body parts are brought together (i.e. thumb and fingertips)
Term
Process
Definition
a body prominece (ex: mastoid process behind ear)
Term
Eminence
Definition
a body projection, usually not as prominent as a process
Term
Spine
Definition
a longer, thinner, sharper process than an eminence (i.e. the vertebral spines are used in the identification of various vertebrae)
Term
Tuberosity
Definition
a large, roughened eminence of variable shape, often sites of tendons or ligament attachments (i.e. deltoid tuberosity)
Term
Tubercle
Definition
a small eminence, often a site of tendon or ligament attachment
Term
Trochanter
Definition
two large, prominent, blunt processes found on the femur: the greater trochanter and the lesser trochanter
Term
Malleolus
Definition
a rounded protuberance adjacent to the ankle joint; it is easy to touch both the lateral and medial malleoli
Term
Boss
Definition
A smooth, round, broad eminence (i.e. female skulls tend to show more bossing of the frontal bone than those of males)
Term
Articulation
Definition
where adjacent bones contact (i.e. the most proximal surface of the tibia articulates with the distal end of the femur)
Term
Condyle
Definition
A rounded articular process.
Term
Epicondyle
Definition
a nonarticular projection adjacent to a condyle
Term
Head
Definition
the large, rounded, usually articular end of a bone
Term
Shaft
Definition
diaphysis! the long, straight section between the ends of a long bone
Term
Epiphysis
Definition
the end portions of long bones
Term
Neck
Definition
The section of the bone between tht head and shaft
Term
Torus
Definition
a body thickening (ex: the supraorbital torus)
Term
ridge
Definition
a linear bony elevation
Term
Crest
Definition
A prominent, usually sharp and thin ridge of bone (i.e. sagittal crest in gorillas)
Term
Line
Definition
a raised linear surface, not as thick as a torus or as sharp as a crest
Term

Hamulus

 

Definition
a hook-shaped projection (ex: hamate in wrist)
Term
Facet
Definition
a small articular surface, OR tooth contace
Term
Fossa
Definition
a depressed area, usually broad and shallow
Term
Fovea
Definition
a pitlike, depressed area, usually smaller than a fossa
Term
Groove
Definition
A long pit or furrow
Term
Sulcus
Definition
a long, wide groove
Term
Fontanelle
Definition
a space between cranial bones of an infant (i.e. soft spot)
Term
Suture
Definition
Where adjacent bones of the skull meet (articulate)
Term
Foramen
Definition
an opening through a bone, usually a passage for blood vessels and nerves
Term
Canal
Definition
A tunnel-like, extended foramen
Term
Meatus
Definition
a short canal (ex: auditory meatus connects middle and outer ear)
Term
Sinus
Definition
a cavity within a cranial bone
Term
Alveolus
Definition
a tooth socket
Term
Number of bones in the adult human
Definition
206
Term
Number of bones in newborn humans
Definition
270
Term
Number of bones in vertebral column, inluding sacrum and coccyx
Definition
26
Term
Number of bones in Axial Skeleton (including skull)
Definition
80
Term
Number of bones in skull
Definition
28
Term
Number of bones in cranium
Definition
27
Term
Number of bones in Appendicular skeleton
Definition
126
Term
Number of bones in hand
Definition
27
Term
Number of bones in foot
Definition
26
Term
Function of the skeleton
Definition

1. Protects and supports soft tissues

2. Achor muscles, tendons, and ligaments

3. Levers that muscles operate to produce movement

4. Centers for production of blood cells

5. Storage facilities for fat

6. Resovoirs if important elements like calcium

Term
Joint
Definition
any connection between different skeletal elements, connected to one another by ligaments and cartilage
Term
Tendons
Definition
packed bundles of collagen fibers
Term
Types of joints
Definition
1. Synovial, Cartilaginous, Sydesmoses
Term
Synovial joints
Definition
i.e. hip, elbow, flexible joints. Have hyaline cartilage and a joint cavity filled with synovial fluid. Types of synovial joints include hall and socket, hinge, saddle-shaped, and planar.
Term
Cartilaginous joints
Definition
aka synchondroses, semi-flexible bones united by cartilage. ex: unfused epiphyses o a long bone.
Term
Sydesmoses joints
Definition
tight, inflexible fibrous joints between bones. ex: cranial sutures, gomphosis (the joint between the root of the teeth and the bones of the jaws)
Term
Synotosis
Definition
when two bones fuse together (i.e. cranial sutures)
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