posterior

posterior /pos·ter·i·or/ (pos-ter´e-er) directed toward or situated at the back; opposite of anterior.

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pos·te·ri·or (p-stîr-r, p-)

adj.

1. Located behind a part or toward the rear of a structure.

2. Relating to the caudal end of the body in quadrupeds or the dorsal side in humans.

3. Near the tail or caudal end of certain embryos.

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posterior (postē´rēr),

adj situated behind.

posterior nasal spine,

n See spine, posterior nasal.

posterior palatal bar,

n See connector, major, posterior palatal.

posterior palatal seal,

n See seal, posterior palatal.

posterior palatal seal area,

n See area, posterior palatal seal.

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posterior

directed toward or situated at the back; opposite of anterior. In quadrupeds usually applied only to parts of the head.

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posterior-anterior

with the x-ray beam passing from the back to the front, especially to the limbs.

posterior chamber luxation

see lens luxation.

posterior (caudal) drawer sign

instability of the stifle joint with caudal movement of the proximal tibia in relation to the distal femur; normally restricted by the intact posterior (caudal) cruciate ligament. This movement is used as a test in the diagnosis of rupture of the ligament in the dog.

posterior functional stenosis

failure of pyloric outflow from the abomasum, as part of the syndrome of vagus indigestion in cattle.

inherited posterior paralysis

congenital paraplegia recorded in cattle and pigs. There are other nervous signs, e.g. opisthotonos, in some forms.

posterior limiting membrane

see descemet's membrane.

posterior pituitary

see pituitary.

posterior polar cataract

see cataract.

posterior segment

the vitreous body, retina, choroid and optic disk.

posterior station trypanosomes

one of the two types of cyclical development of trypanosomes. In this form the metacyclic trypomastigotes accumulate in the hindgut of the arthropod vector and are passed out with its feces. Infection of the definitive vertebrate host occurs via the skin or skin wound. Called also stercoracic.

posterior vena caval thrombosis

see caudal vena caval thrombosis.