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Cellular outgrowths. These look like little bumps or fingers on the surface of cells.
Industry:Biology
The process by which an egg (the female gamete) is released from the ovary. In animals other than mammals, with the exception of monotremes, this results in the laying of an egg outside of the body. When female mammals ovulate, the egg, if fertilized, is retained within the uterus.
Industry:Biology
The main opening through which filtered water is discharged. Found in sponges.
Industry:Biology
Collection of organs which have related roles in an organism's functioning. The nervous system, vascular system, and muscle system are all organ systems.
Industry:Biology
Collection of tissues which performs a particular function or set of functions in an animal or plant's body. The heart, brain, and skin are three organs found in most animals. The leaf, stem, and root are three organs found in most plants. Organs are composed of tissues, and may be organized into larger organ systems.
Industry:Biology
Characteristic of chordates, the notochord is a stiff rod of tissue along the back of the body. In vertebrates, the backbone is deposited around the notochord and nerve cord.
Industry:Biology
A specialized cell that can react to stimuli and transmit impulses. A neuron consists of a body which contains the nucleus; dendrites, which are short branches off the body that receive incoming impulses; and a long axon which carries impulses away from the body and to the next neuron.
Industry:Biology
Primary bundle of nerves in chordates, which connects the brain to the major muscles and organs of the body.
Industry:Biology
A bundle of neurons, or nerve cells. More properly, it is a bundle of axons.
Industry:Biology
Segment of the body formed by a region of muscle. The myotomes are an important feature for recognizing early chordates.
Industry:Biology
