capsule

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capsule

 [kap´sul, kap´sūl]
1. an enclosing structure, as a soluble container enclosing a dose of medicine.
2. a cartilaginous, fatty, fibrous, or membranous structure enveloping another structure, organ, or part. adj., adj cap´sular.
 Capsule. Generalized structure of a synovial joint showing the joint or articular capsule. From Applegate, 2000.
articular capsule the saclike envelope that encloses the cavity of a synovial joint by attaching to the circumference of the articular end of each involved bone. Called also joint capsule.
adipose renal capsule the investment of fat surrounding the fibrous renal capsule, continuous at the hilus with the fat in the renal sinus.
bacterial capsule a gelatinous envelope surrounding a bacterial cell, usually polysaccharide but sometimes polypeptide in nature; it is associated with the virulence of pathogenic bacteria.
Bowman's capsule the globular dilatation forming the beginning of a renal tubule and surrounding the glomerulus. Called also glomerular capsule and malpighian capsule.
c's of the brain two layers of white matter in the substance of the brain; external capsule and internal capsule.
external capsule the layer of white fibers between the putamen and claustrum.
fibrous renal capsule the connective tissue investment of the kidney, which continues through the hilus to line the renal sinus.
Glisson's capsule a sheath of connective tissue accompanying the hepatic ducts and vessels through the hepatic portal. In hepatitis it may become stretched, which is a common cause of pain.
glomerular capsule Bowman's capsule.
capsule of heart pericardium.
internal capsule the fanlike mass of white fibers separating the lentiform nucleus laterally from the head of the caudate nucleus, the dorsal thalamus, and the tail of the caudate nucleus medially. The internal capsule carries both afferent and efferent fibers of the cerebral cortex.
joint capsule articular capsule.
capsule of lens the elastic sac enclosing the lens of the eye.
malpighian capsule Bowman's capsule.
capsule of pancreas a thin sheath of areolar tissue that invests the pancreas (but does not form a definite capsule), the septa of which extend into the gland and divide it into lobules.
renal c's the investing tissue around the kidney, divided into the fibrous renal capsule and the adipose renal capsule.
Tenon's capsule the connective tissue enveloping the posterior eyeball.

cap·sule (cap),

(kap'sūl),
1. A membranous anatomic structure, usually dense, irregular, collagenous connective tissue, which envelops an organ, a joint, or any other part resembling a capsule or envelope. Synonym(s): capsula [TA]
2. A fibrous tissue layer enveloping an organ or a tumor, especially if benign.
3. A solid dosage form in which a drug is enclosed in a hard or soft soluble container or "shell" of a suitable form of gelatin.
4. A hyaline polysaccharide coating around a fungal or bacterial cell. Bacteria may also have a polypeptide capsule or a slime layer around the cell.
[L. capsula, dim. of capsa, box]

capsule

(kăp′səl, -so͞ol)
n.
1. A small soluble container, usually made of gelatin, that encloses a dose of an oral medicine or a vitamin.
2. Anatomy A fibrous, membranous, or fatty sheath that encloses an organ or part, such as the sac surrounding the kidney or the fibrous tissues that surround a joint.
3. Microbiology A polysaccharide outer shell enveloping certain bacteria.
4. Botany
a. A dry dehiscent fruit that develops from two or more united carpels.
b. The thin-walled, spore-containing structure of mosses and related plants.
tr.v. cap·suled, cap·suling, cap·sules
To enclose in or furnish with a capsule.

cap′su·lar (-sə-lər, -syo͝o-) adj.

capsule

Anatomy
(1) A fibromembranous covering of an organ (e.g., the kidney, liver).
(2) The fibrous covering of a joint.

Chinese medicine
Jaio niang—A gelatin sheath filled with finely ground powder, which allows the optimal delivery of pungent or bitter herbs.

Microbiology
Microcapsule—A thick, gel-like material composed of highly hydrophilic acidic polysaccharide, which covers the wall of gram-positive or gram-negative bacteria and imparts a smooth appearance to colonies in culture; the capsule is linked to bacterial pathogenicity, as it inhibits phagocytosis.
 
Pathology
A thick fibrous material that ensheathes benign tumours, cysts or parasites that have been “walled off” as a host defence.
 
Pharmacology
A solid dosage form of a drug, in which the drug is enclosed in a hard or soft soluble container or shell of an appropriate gelatin.

capsule

Pharmacology A solid dosage form of a drug in which the drug is enclosed in a hard or soft soluble container or shell of an appropriate gelatin. See Microcapsule.

cap·sule

(kap'sŭl)
1. Synonym(s): capsula.
2. A fibrous tissue layer enveloping an organ, joint, or a neoplasm.
3. A solid dosage form in which a drug is enclosed in either a hard or soft shell of soluble material.
4. A hyaline polysaccharide coating around a fungal or bacterial wall of a cell. Bacteria may also have a polypeptide capsule or slime layer around the cell.
[L. capsula, dim. of capsa, box]

capsule

1. Any outer covering such as the tough, protective outer coat of solid organs including the kidneys, liver and spleen or the delicate outer membrane of the internal crystalline lens of the eye. Joints, too, have capsules which contribute to their stability and function.
2. Soluble gelatine containers for drugs in powder or liquid form.

capsule

a containing structure with a strong outer covering, found in many different groups, e.g.:
  1. the outer coat of some bacteria (referred to as encapsulated) which enhances resistance to the defences of the host (see TRANSFORMATION for genetic control).
  2. the sporangium of BRYOPHYTES (e.g. mosses) consisting of a hard outer layer inside which are developing spores.
  3. a type of fruit in ANGIOSPERMS that splits open when dry (DEHISCENT). Examples include poppy, willowherb, snapdragon.
  4. a spherical bony structure in some vertebrate skulls (e.g. the auditory capsule of dogfish).
  5. the blind-ending part of the kidney NEPHRON.

cap·sule

(kap'sŭl)
1. [TA] A membranous anatomic structure, usually dense, irregular, collagenous connective tissue, which envelops a body part.
2. A fibrous tissue layer enveloping an organ or a tumor, especially if benign.
3. A solid dosage form in which a drug is enclosed in a hard or soft soluble container or "shell" of a suitable form of gelatin.
[L. capsula, dim. of capsa, box]