active sperm
11oogamous — [ō äg′ə məs] adj. [ OO + GAMOUS] characterized by the uniting of a large, nonmotile egg and a small, active sperm for reproduction oogamy [ō äg′əmē] n …
12Life Sciences — ▪ 2009 Introduction Zoology In 2008 several zoological studies provided new insights into how species life history traits (such as the timing of reproduction or the length of life of adult individuals) are derived in part as responses to… …
13endocrine system, human — ▪ anatomy Introduction group of ductless glands (gland) that regulate body processes by secreting chemical substances called hormones (hormone). Hormones act on nearby tissues or are carried in the bloodstream to act on specific target organs… …
14Spawn (biology) — The spawn (eggs) of a clownfish. The black spots are the eyes developing. Spawn refers to the eggs and sperm released or deposited, usually into water, by aquatic animals. As a verb, spawn refers to the process of releasing the eggs and sperm,… …
15animal development — Introduction the processes that lead eventually to the formation of a new animal starting from cells derived from one or more parent individuals. Development thus occurs following the process by which a new generation of organisms is produced by …
16protein — proteinaceous /proh tee nay sheuhs, tee i nay /, proteinic, proteinous, adj. /proh teen, tee in/, n. 1. Biochem. any of numerous, highly varied organic molecules constituting a large portion of the mass of every life form and necessary in the… …
17MEDICINE AND LAW — This article is arranged according to the following outline: introduction Judicial Decision – A Value Determination the values of a jewish and democratic state in the image of god PHYSICIAN S DUTIES AND PATIENTS RIGHTS the physician and the judge …
18Sexual intercourse — Intromission redirects here. For other uses, see Intromission (disambiguation). Making love redirects here. For other uses, see Making love (disambiguation) …
19sex — /seks/, n. 1. either the male or female division of a species, esp. as differentiated with reference to the reproductive functions. 2. the sum of the structural and functional differences by which the male and female are distinguished, or the… …
20Semen — For other uses, see Semen (disambiguation). Human semen in a petri dish. Semen is an organi …
