serosa

(redirected from serous tunic)
Also found in: Dictionary, Thesaurus, Encyclopedia.

serosa

 [se-ro´sah]
any serous membrane. adj., adj sero´sal.

se·ro·sa

(se-rō'să), [TA] Do not confuse this word with cirrhosis or sclerosis.
1. The outermost coat or serous layer of a visceral structure that lies in the body cavities of the abdomen or thorax; it consists of a surface layer of mesothelium reinforced by irregular fibroelastic connective tissue.
See also: chorion.
2. The outermost of the extraembryonic membranes that encloses the embryo and all its other membranes; it consists of somatopleure, that is, ectoderm reinforced by somatic mesoderm; the serosa of mammalian embryos is frequently called the trophoderm.
See also: chorion. Synonym(s): membrana serosa (2)
[fem. of Mod. L. serosus, serous]

serosa

/se·ro·sa/ (se-ro´sah) (se-ro´zah)
2. chorion.sero´sal

serosa

(sĭ-rō′sə, -zə)
n. pl. sero·sas or sero·sae (-sē, -zē)
1. A serous membrane, especially one that lines the pericardial, pleural, and peritoneal cavities, enclosing their contents.
2. A membrane that surrounds the embryo of birds, reptiles, and many insects.

se·ro′sal (-zəl) adj.

serosa

[sirō′sə]
Etymology: L, serum
any serous membrane, such as the tunica serosa that lines the walls of body cavities and secretes a watery exudate.

serosa

A virtual connective-tissue membrane covered by a single layer of mesothelial cells, which lines body cavities (e.g., pericardium, peritoneum, pleura) and covers the outer surface of organs (e.g., heart, intestines, and lungs) present in those cavities.

se·ro·sa

(sēr-ō'să) [TA]
1. The outermost coat or serous layer of a visceral structure that lies in a body cavity (abdomen or thorax); it consists of a surface layer of mesothelium reinforced by irregular fibroelastic connective tissue.
2. The outermost of the extraembryonic membranes, which encloses the embryo and all its other membranes; it consists of ectoderm reinforced by somatic mesoderm; the serosa of mammalian embryos is frequently called the trophoderm.
Synonym(s): membrana serosa (2) .
See also: chorion
Synonym(s): membrana serosa (1) , serous membrane.
[fem. of Mod. L. serosus, serous]

serosa

  1. a SEROUS membrane such as the PERITONEUM that secretes a serum.
  2. an epithelial layer formed under the vitelline membrane in the development of the insect egg; it lays down the serosal cuticle of the egg.

se·ro·sa

(sēr-ō'să) [TA]
Outermost coat or serous layer of visceral structure that lies in body cavities of abdomen or thorax.
Synonym(s): serous membrane.
[fem. of Mod. L. serosus, serous]

serosa

any serous membrane.