segment

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segment

 [seg´ment]
a demarcated portion of a whole. adj., adj segmen´tal.
behavior segment the smallest descriptive unit of a response to a stimulus.
bronchopulmonary s's the smaller subdivisions of the lobe of a lung; each segment is separated from others by a connective tissue septum and supplied by its own branch of the bronchus leading to the particular lobe.
hepatic s's subdivisions of the hepatic lobes based on arterial and biliary supply and venous drainage.
renal s's subdivisions of the kidney that have independent blood supply from branches of the renal artery, including the superior, anterior superior, inferior, anterior inferior, and posterior segments.
uterine segment either of the two portions into which the uterus becomes differentiated early in labor; the upper contractile portion (corpus uteri) becomes thicker as labor approaches, and the lower noncontractile portion (the isthmus) is thin walled and passive in character.

seg·ment

(seg'ment), [TA]
1. A section; a part of an organ or other structure delimited naturally, artificially, or by invagination from the remainder.
See also: metamere. Synonym(s): segmentum [TA]
2. A territory of an organ having independent function, supply, or drainage.
3. To divide and redivide into minute equal parts.
[L. segmentum, fr. seco, to cut]

segment

(sĕg′mənt)
n.
Biology A clearly differentiated subdivision of an organism or part, such as a metamere.
tr. & intr.v. (sĕg-mĕnt′) seg·mented, seg·menting, seg·ments
To divide or become divided into segments.

seg′men·tar′y (-mən-tĕr′ē) adj.

segment

Hepatology
A functional division of the liver, of which there are eight.
 
Vox populi
A part of a larger region, structure or the body.

segment

Vox populi A part of a larger region, structure, body. See Abominal segment, Bronchopulmonary segment, Cervical segment, Competitive segment, Diaphragmatic segment, Posterior segment.

seg·ment

(seg'mĕnt) [TA]
1. A section; a part of an organ or other structure delimited naturally, artificially, or by invagination from the remainder.
Synonym(s): segmentum [TA] .
2. A territory of an organ having independent function, supply, or drainage.
3. To divide and redivide into minute, equal parts.
See also: metamere
[L. segmentum, fr. seco, to cut]

segment

  1. a division formed in the cleavage of an egg.
  2. part of a jointed appendage or of a chromosome.see SEGMENTATION.

seg·ment

(seg'mĕnt) [TA]
1. A section; part of an organ or other structure delimited naturally, artificially, or by invagination from remainder.
2. Territory of an organ having independent function, supply, or drainage.
3. To divide and redivide into minute equal parts.
[L. segmentum, fr. seco, to cut]