saccus

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sac

 [sak]
a baglike organ or structure; see also bag, pocket, and pouch.
air s's (alveolar s's) the spaces into which the alveolar ducts open distally, and with which the alveoli communicate; see also lung.
amniotic sac the sac formed by the amnion, enclosing the fetus suspended in amniotic fluid; popularly known as the bag of waters.
conjunctival sac the potential space, lined by conjunctiva, between the eyelids and the eyeball.
endolymphatic sac the blind, flattened cerebral end of the endolymphatic duct.
hernial sac the peritoneal pouch that encloses protruding intestine.
lacrimal sac the dilated upper end of the nasolacrimal duct; see also lacrimal apparatus.
yolk sac the extraembryonic membrane connected with the midgut; in vertebrates below true mammals, it contains a yolk mass.
Yolk sac in a developing embryo. From Applegate, 2000.

sac

(sak), Do not confuse this word with sack.
1. A pouch or bursa.
See also: sacculus. Synonym(s): saccus
2. An encysted abscess at the root of a tooth.
3. The capsule of a tumor, or envelope of a cyst.
[L. saccus, a bag]

saccus

/sac·cus/ (sak´us) pl. sac´ci   [L.] sac.

sac

(sak)
1. A pouch or bursa.
Synonym(s): saccus [TA] .
2. An encysted abscess at the root of a tooth.
3. The capsule of a tumor, or envelope of a cyst.
See also: sacculus
[L. saccus, a bag]

saccus

pl. sacci [L.] a sac.

saccus cecus
fundus of the stomach in the horse.
saccus hypophysialis
an outgrowth of ectoderm coming directly from the roof of the stomodeum in the embryo; it comes into contact with a downgrowth from the forebrain and is later transformed into the anterior lobe of the pituitary.