- notochordal sheath
- an elastic sheath surrounding the notochord.
Medical dictionary. 2011.
notochordal sheath
Look at other dictionaries:
sheath — 1. Any enveloping structure, such as the membranous covering of a muscle, nerve, or blood vessel. Any sheathlike structure. SYN: vagina (1). 2. The prepuce of male animals, especially of the horse. 3. A specially designed tu … Medical dictionary
chordal sheath — notochordal s … Medical dictionary
skeleton — skeletonless, adj. skeletonlike, adj. /skel i tn/, n. 1. Anat., Zool. the bones of a human or an animal considered as a whole, together forming the framework of the body. 2. any of various structures forming a rigid framework in an invertebrate.… … Universalium
cyclospondylous — referring to vertebra consisting of calcified rings around the notochord in Elasmobranchii and Holocephali. The calcification extends only to the chordacentrum or notochordal sheath, the arches are cartilaginous … Dictionary of ichthyology
vertebra cyclospondyla — (plural vertebrae cyclospondylae)) cyclospondylous vertebra (vertebra consisting of calcified rings around the notochord in Elasmobranchii and Holocephali. The calcification extends only to the chordacentrum or notochordal sheath, the arches are… … Dictionary of ichthyology
Process — In anatomy, a process is a projection from a structure. The process of the mandible is the part of the lower jaw that projects forward. In a more general sense, a process is a series of actions or events that are part of a system or of a… … Medical dictionary
Notochord — Transverse section of a chick embryo of forty five hours’ incubation. Latin notochorda Gray s … Wikipedia
canal — A duct or channel; a tubular structure. SEE ALSO: c., duct. SYN: canalis [TA]. [L. canalis] abdominal c. SYN: inguinal c.. accessory c. a channel leading from the root … Medical dictionary
Bursa — A bursa is a closed fluid filled sac that functions to provide a gliding surface to reduce friction between tissues of the body. When the bursa becomes inflamed, the condition is known as "bursitis." Most commonly this is not an… … Medical dictionary
