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Regulation; is the life process by which organisms respond to changes inside and around them.
Stimulus; something that causes a change in the environment which results in a change in an organism to which a response will occur.
Neuron; a specialized cell transmitting nerve impulses; a nerve cell.
Impulse; a sudden strong and unreflective urge or desire to act.
Effector; body parts that respond to nervous system command, they can be muscles or glands.
Receptors; (sense organs) specialized structures sensitive to certain types of stimuli.
Response; an action resulting from the stimulus.
Neurotransmitters; are brain chemicals that allow transmission of signals from one neuron to another.
Irritability; ability of a cell to respond to the environment
Dendrites; hair-like structures, which receive impulse(s) first.
Cyton (cell body); It is the site for metabolic activities.
Axon; long thin structure that carries impulse away from the cell body to an effector( muscle or gland) or other neurons.
Hormones; chemical messengers.
Glands; organs that secrete substance into or out of the body.
Target cells/tissues/organs; glucagon--- liver, parathorme--bones, insulin--liver, muscle and fat cells
Hypothalamus; is located in the brain, stimulates the pituitary (master) gland to release hormones when information is receive from the nervous system and it controls the body temperature.
Hyposecretion; is a disorder caused by too little hormones.
Hypersecretion; is a disorder caused by too much hormones.
Feedback mechanism; one change causes another change.
Reflex; impulse pathway/ action.
Cerebrum; is the largest part of the brain. It has a right and left hemisphere and convolutions (folds), it contains memory, thought, analyzing and the senses.
Cerebellum; it means little brain, it maintains balance (equilibrium) and control all voluntary and involuntary movement.
Medulla oblongata; is the lowest part of the brain that controls many involuntary activities, for example coughing, heartbeat,breathing, peristalsis, blinking.
Created by: 1008562