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Science chap. 18

Excretion and Elimination

anus the opening at the lower end of the alimentary canal, through which the solid refuse of digestion is excreted
dermis the dense inner layer of skin beneath the epidermis, composed of connective tissue, blood and lymph vessels, sweat glands, hair follicles, and an elaborate sensory nerve network
elimination to remove or get rid of, esp. as being in some way undesirable
epidermis the outer, nonvascular, nonsensitive layer of the skin, covering the true skin or corium
excretion to separate and eliminate from an organic body; separate and expel from the blood or tissues, as waste or harmful matter
kidney unit group of organs of the body concerned with excretion of urine, that is, water and the waste products of metabolism. In humans
kidneys either of a pair of bean-shaped organs in the back part of the abdominal cavity that form and excrete urine, regulate fluid and electrolyte balance, and act as endocrine glands
large intestine the broad, shorter part of the intestines, comprising the cecum, colon, and rectum, that absorbs water from and eliminates the residues of digestion
liver a large, reddish-brown, glandular organ located in the upper right side of the abdominal cavity, divided by fissures into five lobes and functioning in the secretion of bile and various metabolic processes.
nephron the filtering and excretory unit of the kidney, consisting of the glomerulus and tubules
perspiration a salty, watery fluid secreted by the sweat glands of the skin, esp. when very warm as a result of strenuous exertion; sweat
pore a minute opening or orifice, as in the skin or a leaf, for perspiration, absorption
rectum the comparatively straight, terminal section of the intestine, ending in the anus
skin the external covering or integument of an animal body, esp. when soft and flexible
sweat to excrete (perspiration, moisture, etc.) through the pores of the skin.
sweat glands one of the minute, coiled, tubular glands of the skin that secrete sweat
ureter a muscular duct or tube conveying the urine from a kidney to the bladder or cloaca
urethra the membranous tube that extends from the urinary bladder to the exterior and that in the male conveys semen as well as urine.
urinary bladder a distensible, muscular and membranous sac, in which the urine is retained until it is discharged from the body
urinary system pertaining to the organs secreting and discharging urine
urine the liquid-to-semisolid waste matter excreted by the kidneys, in humans being a yellowish, slightly acid, watery fluid
Created by: daisy37311