bursa copulatrix — 1. A genital pouch of numerous invertebrates. 2. In certain male nematodes and acanthocephalans, a modified caudal ala or alae, circular or oval, may be divided into two lateral symmetrical or asymmetrical lobes, separated by a dorsal lobe, and… … Dictionary of invertebrate zoology
genital chamber — (ARTHROPODA: Insecta) A copulatory invagination. a. In females, sometimes forms a tubular vagina that is often developed to form a bursa copulatrix. b. In males, a ventral invagination containing the phallic organs … Dictionary of invertebrate zoology
reproductive system, animal — Introduction any of the organ systems by which animals reproduce. The role of reproduction is to provide for the continued existence of a species; it is the process by which living organisms duplicate themselves. Animals compete with… … Universalium
ICD-9-CM Volume 3 — is a system of procedural codes. It is a subset of ICD 9 CM (volumes 1 and 2 are used for diagnostic codes.) The United States National Center for Health Statistics drafted ICD 10 PCS in 2000 as a potential replacement for ICD 9 CM Volume 3, but… … Wikipedia
Marstonia comalensis — Shell of one of the lectotypes of Marstonia comalensis. Scale bar is 1.0 mm. Scientific classification Kingdom … Wikipedia
Love dart — SEM image of lateral view of a love dart of the land snail Monachoides vicinus. The scale bar is 500 μm (0.5 mm) … 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
syndrome — The aggregate of symptoms and signs associated with any morbid process, and constituting together the picture of the disease. SEE ALSO: disease. [G. s., a running together, tumultuous concourse; (in med.) a concurrence of symptoms, fr. syn,… … Medical dictionary
Outline of human anatomy — See also: Index of anatomy related articles Human anatomy, a branch of anatomy, is the scientific study of the morphology of the adult human. It is subdivided into gross anatomy and microscopic anatomy. Gross anatomy (also called topographical… … Wikipedia
acarid — /ak euh rid/, n. 1. an acarine, esp. a mite of the family Acaridae. adj. 2. of or pertaining to an acarid. [1875 80; ACAR(US) + ID2] * * * ▪ arachnid Introduction any member of the subgroup of the arthropod class Arachnida that includes the … Universalium