Excretory+ducts
111pelecaniform — [pel΄ ə kan′ə fôrm΄] adj. of, or having the nature of, an order (Pelecaniformes) of swimming birds having all four toes connected in a webbed foot, including pelicans and cormorants * * * ▪ bird Introduction any of the relatively large and… …
112agnathan — /ag neuh theuhn/, n. 1. any member of the vertebrate class Agnatha. adj. 2. agnathous. [AGNATH(A) + AN] * * * ▪ fish Introduction any member of the group of primitive, jawless fishes (fish) that includes the lampreys (lamprey) (order… …
113epithelium — epithelial, adj. /ep euh thee lee euhm/, n., pl. epitheliums, epithelia / lee euh/. Biol. any animal tissue that covers a surface, or lines a cavity or the like, and that, in addition, performs any of various secretory, transporting, or… …
114beardworm — ▪ animal phylum Introduction also called Pogonophoran, any of a group of marine invertebrates constituting the phylum Pogonophora. Pogonophorans live a sedentary life in long, protective tubes on seafloors throughout the world. The… …
115sexual behaviour, human — Introduction any activity solitary, between two persons, or in a group that induces sexual arousal. There are two major determinants of human sexual behaviour: the inherited sexual response patterns that have evolved as a means of ensuring… …
116Cell — The basic structural and functional unit in people and all living things. Each cell is a small container of chemicals and water wrapped in a membrane. Each cell in the human body there are 100 trillion cells in each of us contains the entire… …
117Male external genitalia — Latin organa genitalia masculina externa The male external genitalia refers to the portion of the male reproductive system consisting of penis, urinary tract, and scrotum …
118Male internal genitalia — Latin organa genitalia masculina interna The male internal genitalia refers to the portion of the male reproductive system consisting of seminal tract and prostate …
119Blood — For other uses, see Blood (disambiguation). Human blood smear: a – erythrocytes; b – neutrophil; c – eosinophil; d – lymphocyte …
120Tardigrade — Temporal range: Cretaceous–Recent[1] …
