You've lost your interest in sex. Having little or no desire in the sack could be a side effect of a thyroid disorder. Too little thyroid hormone could be a contributor to a low libido, but the cumulative impact of other hypothyroidism symptomsâweight gain, low energy, and body aches and painsâcould also play a part.
Excretion is the process by which metabolic wastes and other non-useful materials are eliminated from an organism. In vertebrates this is primarily carried out by the lungs, kidneys and skin. This is in contrast with secretion, where the substance may have specific tasks after leaving the cell. Excretion is an essential process in all forms of life. For example, in mammals urine is expelled through the urethra, which is part of the excretory system. In single-celled organisms, waste products are discharged directly through the surface of the cell.
(Ä­k-skrÄâ²shÉn) The elimination by an organism of waste products, such as carbon dioxide and urea, resulting from metabolic processes. Higher animals have specific organs of excretion, such as the lungs and kidneys. In plants and many lower organisms, waste is eliminated by diffusion to the outside environment. excrete verb.