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MCAT Word List # MCAT/W59

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  Word Descriptions yolk sac, cramp, isoelectric point, olfactory bulb, iris, hydrogen, mandible, basal metabolic rate, excretion, endometrium


   
Description of yolk sac (noun: plural: yolk sacs)
vitelline sac; the membranous sac that lies ventral to the embryo

Samples of yolk sac
The yolk sac is one of the first places where blood cells are made.



   
Description of cramp (noun: plural: cramps)
painful spasm of the muscle

Samples of cramp
Cramps may be caused by imbalance of salts in the blood.



   
Description of isoelectric point (noun: no plural)
pH at which the electrolyte concentration of an amphoteric substance such as protein is electrically zero

Samples of isoelectric point
A protein may be characterized by its isoelectric point being the pH at which its net charge is zero.



   
Description of olfactory bulb (noun: plural: olfactory bulbs)
end of the olfactory lobe where the olfactory nerves start

Samples of olfactory bulb
The olfactory nerves project directly to the olfactory bulbs.



   
Description of iris (noun: plural: irises)
part of the eye that controls the pupil size

Samples of iris
The iris is the colored part of the eye.



   
Description of hydrogen (noun: plural: hydrogens)
smallest, commonest atom made of one proton and electron; chemical element with the symbol H that makes up most organic compounds

Samples of hydrogen
Hydrogen is used to hydrogenate vegetable oils to make margarines and spreads.
Hydrogen is found in water.



   
Description of mandible (noun: plural: mandibles)
the jawbone

Samples of mandible
Muscles connecting the mandible to the base of the skull allow opening of the mouth and chewing.



   
Description of basal metabolic rate (noun: no plural)
the amount of energy expended by the body in order to survive at complete rest

Samples of basal metabolic rate
Starvation slows the basal metabolic rate.



   
Description of excretion (noun: no plural)
discharging waste products from the body

Samples of excretion
The kidneys regulate the concentration of salt and water in the blood through excretion of urine.



   
Description of endometrium (noun: plural: endometria)
mucous internal lining of the uterus

Samples of endometrium
The endometrium is built up in the menstrual cycle and shed at menstruation.



  Determinations of the words yolk sac, cramp, isoelectric point, olfactory bulb, iris, hydrogen, mandible, basal metabolic rate, excretion, endometrium

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     MCAT test: Vocabulary Words: Noun Test         MCAT test: Word games: Free Online Nouns Quiz         MCAT Vocabulary: (printable version)         Definition of yolk sac, cramp, isoelectric point, olfactory bulb, iris, hydrogen, mandible