acnestis

 

acnestis

1. (zoology) The section of an animal's skin that it cannot reach in order to scratch itself, usually the space between the shoulder blades.

Myrmecology

 Myrmecology (/mɜːrmɪˈkɒlədʒi/; from Greek: μύρμηξ, myrmex, "ant" and λόγος, logos, "study") is a branch of entomology focusing on the scientific study of ants. 

 

Integument

"Integument", as a word, derives from the Latin "integumentum", which literally means "a covering". In transferred or figurative senses, it could mean a cloak or a disguise. In English "integument" is a fairly modern word, its origin having been traced back to the early seventeenth century. It can mean a material or layer with which anything is enclosed, clothed, or covered in the sense of "clad" or "coated", as with a skin or husk.

As a general term in biology the word "integument" refers most commonly to the natural covering of an organism or an organ, such as its skin, husk, shell, or rind.

In botany the senses are similar to those in zoology, referring to the covering of an organ, but when the context indicates nothing to the contrary, the word commonly refers to an envelope of one or more cell layers covering the ovule, leaving only a pore, the micropyle, through which the pollen tube can enter. It also can refer to the testa, or seed coat.

The integument of an organ in zoology typically would comprise membranes of connective tissue such as those around a kidney or liver. In referring to the integument of an animal, the usual sense is its skin and its derivatives: the integumentary system, where "integumentary" is a simile for "cutaneous".

zoonosis

A zoonosis (pronounced /ˌzoʊəˈnoʊsɨs/) or zoonose is any infectious disease that is able to be transmitted (in some instances, by a vector) from other animals, both wild and domestic, to humans or from humans to animals (the latter is sometimes called reverse zoonosis). The word is derived from the Greek words zòon (animal) and nosos (ill). Many serious diseases fall under this category.

Metazoan

Metazoan: Any animal that undergoes development from an embryo stage with three tissue layers, namely the ectoderm, mesoderm, and endoderm. The term applies to all animals except the sponges.