capsule /cap·sule/ (kap´sul)
Tenon's capsule,
1. an enclosing structure, as a soluble container enclosing a dose of medicine.
2. a cartilaginous, fatty, fibrous, membranous structure enveloping another structure, organ, or part.cap´sular
adipose renal capsule the investment of fat surrounding the fibrous capsule of the kidney, continuous at the hilum with the fat in the renal sinus.
articular capsule joint capsule; the saclike envelope enclosing the cavity of a synovial joint.
auditory capsule the cartilaginous capsule of the embryo that develops into the bony labyrinth of the inner ear.
bacterial capsule an envelope of gel surrounding a bacterial cell, usually polysaccharide but sometimes polypeptide in nature; it is associated with the virulence of pathogenic bacteria.
cartilage capsule a basophilic zone of cartilage matrix bordering on a lacuna and its enclosed cartilage cells.
external capsule the layer of white fibers between the putamen and claustrum.
fibrous renal capsule the connective tissue investment of the kidney, continuous through the hilum to line the renal sinus.
Glisson's capsule the connective tissue sheath accompanying the hepatic ducts and vessels through the hepatic portal.
glomerular capsule , capsule of glomerulus the globular dilatation forming the beginning of a uriniferous tubule within the kidney and surrounding the glomerulus.
internal capsule a 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.
joint capsule articular c.
capsule of lens the elastic envelope covering the lens of the eye.
optic capsule the embryonic structure from which the sclera develops.
otic capsule the skeletal element enclosing the inner ear mechanism. In the human embryo, it develops as cartilage at various ossification centers and becomes completely bony and unified at about the 23rd week of fetal life.
renal capsules 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.
Te·non's capsule (t  n nz, t-nô z)n. See sheath of eyeball. |
Tenon's capsule,
a thin membranous socket that envelops the eyeball from the optic nerve to the ciliary region and allows it to move freely. Tenon's capsule has a smooth inner surface, pierced by vessels and nerves, and fuses with the sheath of the optic nerve and with the sclera. The lower part of the membrane thickens into the suspensory ligament, which attaches to the zygomatic arch and the lacrimal bones. Also called fascia bulbi.
Tenon's capsule
the connective tissue enveloping the posterior eyeball.
Tenon's capsule
The fibrous membrane that envelops the globe from the margin of the cornea to the optic nerve. Its inner surface is in close contact with the episclera to which it is connected by fine trabeculae. These trabeculae also attach it to the extraocular muscles. The posterior surface of the capsule is in contact with the orbital fat. Anteriorly, it becomes thinner and merges gradually into the subconjunctival connective tissue. Syn. Bonnet's capsule; capsule of the eyeball; fascia bulbi. See sub-Tenon's injection; ligament of Lockwood.
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