anterior

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anterior

 [an-tēr´e-or]
situated at or directed toward the front; opposite of posterior.

an·te·ri·or

(an-tēr'ē-ōr),
1. In human anatomy, denoting the front surface of the body; often used to indicate the position of one structure relative to another, that is, situated nearer the front part of the body. Synonym(s): ventral (2) [TA], ventralis [TA]
2. Near the head or rostral end of certain embryos.
3. In veterinary anatomy, limited to structures of the eye and ear. The word is otherwise ambiguous with respect to the anatomy of quadrupeds; cranial is preferred.
4. Before, in relation to time or space.
[L.]

anterior

/an·te·ri·or/ (an-tēr´e-or) situated at or directed toward the front; opposite of posterior.

anterior

(ăn-tîr′ē-ər)
adj.
1. Placed before or in front.
2. Occurring before in time; earlier.
3. Anatomy
a. Located near or toward the head in lower animals.
b. Located on or near the front of the body in higher animals.
c. Located on or near the front of an organ or on the ventral surface of the body in humans.
4. Botany In front of and facing away from the axis or stem.

an·te′ri·or′i·ty (-ôr′ĭ-tē, -ŏr′-) n.
an·te′ri·or·ly adv.

anterior (A)

[antir′ē·ər]
Etymology: L, ante + prior, foremost
1 the front of a structure.
2 pertaining to a surface or part situated toward the front or facing forward. Compare posterior. See also ventral.

anterior

adjective Referring to or toward the front of the body.

an·te·ri·or

(an-tēr'ē-ŏr)
1. human anatomy Denoting the front surface of the body; often used to indicate the position of one structure relative to another, i.e., situated nearer the front part of the body.
Synonym(s): ventral (2) .
2. Near the head or rostral end of certain embryos.
3. Before, in relation to time or space.
[L.]

anterior

At or towards the front of the body.

anterior

  1. (in animals) that part of the animal, usually the head, which proceeds first in forwards movement.
  2. (in plants) that part of the INFLORESCENCE which is furthest away from the main stem.

anterior

; ventral the foresurface of the body

an·te·ri·or

(an-tēr'ē-ŏr)
[TA] In human anatomy, denoting the front surface of the body; often used to indicate the position of one structure relative to another, i.e., situated nearer the front part of the body.
Synonym(s): ventral (2) [TA] .
[L.]

anterior,

adj 1. situated in front of.
adj 2. a term used to denote the incisor and canine teeth or the forward region of the oral cavity.
adj 3. the forward position.
anterior cervical triangle,
anterior cranial base,
n the anterior cranial fossa, sometimes identified by related landmarks such as the sella turcica and nasion.
anterior determinants of occlusion,
anterior discrepancy,
n a difference (as in tooth size or another characteristic) between the members of a pair of corresponding teeth in the anterior sextant.
anterior guide,
anterior nasal spine,
anterior palatal bar,
anterior tooth arrangement,
n See arrangement, tooth, anterior.

anterior

situated at or directed toward the front; opposite of posterior. In quadrupeds the use of the term is limited to parts of the head but is often used to mean cranially. In bipeds such as humans it is synonymous with ventral.

anterior abdomen pain
elicited pain in the anterior abdomen caused, in cattle, by reticulitis, hepatic or splenic abscess, abomasal ulcer and intestinal obstruction.
anterior chamber
the part of the eyeball between the cornea and the iris, filled with aqueous humor.
anterior chamber angle
see iridocorneal angle.
anterior compartment
chamber of the eye bounded by the iris and cornea; contains the aqueous humor as it moves to the filtration angle; called also anterior chamber.
anterior cruciate ligament
see cranial (anterior) cruciate ligament.
anterior (cranial) drawer sign
cranial, nonrotary movement of the proximal tibia in relation to the distal femur. Normally restricted by the cranial (anterior) cruciate ligament and used as a diagnostic test for rupture of that structure.
anterior epithelial layer
of the cornea is a noncornified, stratified, squamous epithelium, continuous with the bulbar conjunctival epithelium.
anterior functional stenosis
achalasia of the reticulo-omasal sphincter causing ingesta to accumulate in the reticulorumen.
anterior limiting membrane
of the cornea is a combination of the basement membrane, a felted layer of fine collagen fibers; substantial only in primates.
anterior pituitary
anterior pituitary hormones
anterior station trypanosomes
a section of the genus Trypanosoma in which the infectious stages accumulate in the mouthparts and salivary glands of the intermediate host so that the parasite is transmitted when the insect vector takes a blood meal. Called also Salivaria. See also posterior station trypanosomes.
anterior vena cava
see vena cava.
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