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a substance that all living organisms produce that brings about a chemical reaction without being altered itself
효소
(biology) the colorless liquid part of the blood in which the blood cells are suspended
혈장
any of a class of organic substances that do not dissolve in water that include many natural oils, waxes, and steroids
지질
a junction between two nerve cells, consisting of a minute gap across which impulses pass by diffusion of a neurotransmitter
시냅스
the genetic makeup of an organism, determined by the combination of genes inherited from its parents
유전자형
a type of cell division that reduces the chromosome number by half, resulting in the formation of gametes (sperm and egg cells) for sexual reproduction
감수분열
a type of cell division that results in the formation of two daughter cells, each having the same number of chromosomes as the parent cell
유사분열
a branching extension of a neuron that receives signals from other neurons and conducts electrical impulses toward the cell body
수상돌기
a long, slender projection of a nerve cell that conducts electrical impulses away from the cell body towards other neurons or target cells
축삭
the system of glands and organs that produce and release hormones into the bloodstream, regulating various physiological functions and maintaining homeostasis
내분비계
a gland that secretes substances, such as enzymes or mucus, through ducts that lead to the external environment or a body cavity, rather than directly into the bloodstream
외분비선
a steroid hormone that the body produces and is used in medicine to help cure skin diseases
코르티솔
something that triggers a reaction in various areas like psychology or physiology
자극
a small, membrane-bound sac within a cell, involved in the transport, storage, or release of substances
소포
