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MCAT Word List # MCAT/M74

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Explanation of motor neuron (noun)
form plural: motor neurons

nerve cell that conducts messages from the brain and the spinal cord to the muscles

Sample of motor neuron
Motor neurons are also called efferent neurons as they carry messages to effector cells.



   
Explanation of nose bleed (noun)
form plural: nose bleeds

bleeding from the nose

Sample of nose bleed
Nose bleeds may occur after injury such as nose picking in children!



   
Explanation of linear (adjective)
forms: more linear; most linear; the most linear

straight; long and narrow shape resembling a line

Sample of linear
If two variables are plotted on a graph that shows a straight line they are said to have a linear relationship.



   
Explanation of pollute (verb)
forms: polluted; polluted; polluting

to contaminate the environment

Sample of pollute
Plastic diapers pollute the earth because they are not biodegradable.



   
Explanation of adrenaline (noun)
form: no plural

a hormone made and released by the adrenal gland in response to stressors

Sample of adrenaline
The release of adrenaline triggers the?flight or fight? reaction.



   
Explanation of catecholamines (noun)
form: only plural

the hormones adrenaline and noradrenaline that are made and secreted by the adrenals

Sample of catecholamines
Catecholamines are released in reaction to stress.



   
Explanation of urinary tracts (noun)
form: only plural

all the channels that carry urine

Sample of urinary tracts
The urinary tract includes the ureters, the bladder and the urethra.



   
Explanation of energy (noun)
form: no plural

a force or power allowing the body to function

Sample of energy
Energy is needed to stay alive.



   
Explanation of division (noun)
form plural: divisions

the splitting of the whole into parts

Sample of division
Cell division occurs during mitosis or meiosis.



   
Explanation of sterilized (adjective)
to be free of micro-organisms; to be unable to reproduce

Sample of sterilized
Surgical instruments must be sterilized after each use.



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