myodome

myodome: 1) a cavity in the skull under the brain in the postorbital region of the skull in which lodge the rectus muscles (anterior, posterior, superior and inferior) of the eye and, anteriorly, the ethmoid for anchoring the oblique muscle (superior and inferior). Actinopterygii typically have well-developed myodomes but some taxa, such as Acipenser, Lepisosteus and Siluridae have lost them

2) a small, subconical, perichondral bone formed in the ethmoid cartilage and making the anterior wall of the myodome

Игры ⚽ Поможем написать курсовую

Myodom — Das (früher selten auch: der) Myodom (gr.: Muskelhaus ) ist ein extramuraler (außerhalb der Hirnhäute gelegener) intracranialer (im Schädel gelegener) paariger Raum von pyramidischer Form zur Aufnahme der vier Geraden Augenmuskeln bei… … Deutsch Wikipedia
Echte Knochenfische — Kreisdorn Doktorfisch (Acanthurus tennenti) Systematik Unterstamm: Wirbeltiere (Vertebrata) … Deutsch Wikipedia
basis cranii — the shelf formed by wings of bone developed from the inner sides of the prootics which meet and form a roof to the myodome and a floor to the brain cavity … Dictionary of ichthyology
basisphenoid — the small, Y shaped, deep, endochondral cranial bone ventrally covered by the parasphenoid and medial to the pterosphenoids forming part of the floor of the neurocranium and the base of the posterior myodome. The bone ossifies from the medial… … Dictionary of ichthyology
os basisphenoideum — (plural ossa basipsphenoidea)) basisphenoid (the small, Y shaped, deep, endochondral cranial bone ventrally covered by the parasphenoid and medial to the pterosphenoids forming part of the floor of the neurocranium and the base of the posterior… … Dictionary of ichthyology

Academic Dictionaries and Encyclopedias