- chorionic sac
- the sac formed by the vertebrate chorion, surrounding the embryo, amniotic cavity, and amniotic sac and contributing to the fetal part of the placenta.
Medical dictionary. 2011.
chorionic sac
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chorionic fluid — fluid in the chorionic sac; it is resorbed as the amniotic sac enlarges and fuses with the chorionic sac … Medical dictionary
chorionic villus — one of the threadlike projections growing in tufts on the external surface of the chorion; see primary, secondary, and tertiary v. Chorionic villi covering the entire chorionic sac in an embryo at Carnegie stage 15, about 36 days … Medical dictionary
Chorionic villi — Diagram of a transverse section, showing the mode of formation of the amnion in the chick. The amniotic folds have nearly united in the middle line. Ectoderm, blue; mesoderm, red; entoderm and notochord, black. (Vill … Wikipedia
Chorionic hematoma — (also chorionic hemorrhage) is the pooling of blood (hematoma) between the chorion, a membrane surrounding the embryo, and the uterine wall.[1] With an incidence of 3.1% of all pregnancies[1], it is the most common sonographic abnormality and the … Wikipedia
Chorionic villus sampling — Intervention Model of human embryo 1.3 mm. long. (Villi of chorion labeled at lower right.) ICD 10 PCS 16603 00 … Wikipedia
sac — 1. A pouch or bursa. SYN: saccus [TA]. SEE ALSO: sacculus. 2. An encysted abscess at the root of a tooth. 3. The capsule of a tumor, or envelope of a cyst. [L. saccus, a … Medical dictionary
chorionic vesicle — see under sac … Medical dictionary
Amniotic sac — A drawing of the amniotic sac from Gray s Anatomy … Wikipedia
human embryology — ▪ biology Introduction the process encompassing the period from the formation of an embryo, through the development of a fetus, to birth. The human body, like that of most animals, develops from a single cell produced by the union of… … Universalium
pregnancy — /preg neuhn see/, n., pl. pregnancies. the state, condition, or quality of being pregnant. [1520 30; PREGN(ANT) + ANCY] * * * Process of human gestation that takes place in the female s body as a fetus develops, from fertilization to birth (see… … Universalium
