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MCAT Word List # MCAT/M75

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  Word Explanations hand, loop of Henle, nucleus, epigastrium, atrioventricular node, guard cells, carbohydrate, weak acid, actin, hypochondriac


   
Explanation of hand (noun)
form plural: hands

the end organ of the upper limb

Sample of hand
The hand is attached to the arm.



   
Explanation of loop of Henle (noun)
form plural: loops of Henle

curved tube that is the main part of the nephron in the kidney

Sample of loop of Henle
The loop of Henle is important for maintaining salt and water balance of the blood.



   
Explanation of nucleus (noun)
form: no plural

part of cell that contains RNA and DNA

Sample of nucleus
The nucleus controls what happens in the cell.



   
Explanation of epigastrium (noun)
form: no plural

upper abdomen between the ribcage and navel

Sample of epigastrium
The esophagus lies in the epigastrium.



   
Explanation of atrioventricular node (noun)
form: no plural

muscle fibers in the heart receiving heartbeat impulses

Sample of atrioventricular node
The atriventricular node works slowly allowing enough time for the artrial contraction and for the ventricles to fill with blood.



   
Explanation of guard cells (noun)
form: only plural

cells around stomata in the leaf

Sample of guard cells
Guard cells can close the stomata when a plant loses water faster than it takes it in.



   
Explanation of carbohydrate (noun)
form plural: carbohydrates

compound made from plants containing carbon, hydrogen and oxygen

Sample of carbohydrate
Carbohydrates, for example, starch, are an important source of energy.



   
Explanation of weak acid (noun)
form plural: weak acids

an acid that only slightly dissociates in a solution

Sample of weak acid
The acid dissociation constant tells us if it is a weak acid.



   
Explanation of actin (noun)
form: no plural

protein component of muscle fibers

Sample of actin
Actin and myosin are both needed to make a muscle bundle contract.



   
Explanation of hypochondriac (noun)
form plural: hypochondriacs

a healthy person who worries excessively about their health and believes they are ill

Sample of hypochondriac
Doctors may become hypochondriacs because they think and learn so much about illness!



  Explain the words hand, loop of Henle, nucleus, epigastrium, atrioventricular node, guard cells, carbohydrate, weak acid, actin, hypochondriac

  Preparation book: Lippincott's Cancer Chemotherapy Handbook

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     MCAT verbal test: Vocabulary Sentence: English Nouns         MCAT practice test: Interactive word games: Free Online Noun Quiz         Free MCAT Words: (printable version)         Meaning of hand, loop of Henle, nucleus, epigastrium, atrioventricular node, guard cells, carbohydrate, weak acid