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Health-care vocabulary · Topic 4 of 14

Words for Body Processes & Actions

Words for Body Processes & Actions — Set 1

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Vocabulary · body processes

Words for Body Processes & Actions — Set 1

Body-process words: void and defecate mean eliminating waste, dilate means widen, occluded means blocked, and patent means open.

01 · Most testedOccluded = blocked, nothing gets through
02 · Most testedDilate = widen or enlarge
03 · Most testedPatent = open and unblocked
01

Most-tested words

occluded (adjective) — blocked or closed off
dilate (verb) — to widen or enlarge
patent (adjective) — open and unblocked (a patent airway)
void (verb) — to empty the bladder; to urinate
defecate (verb) — to pass stool; to have a bowel movement
02

More words

ingest (verb) — to take into the body by swallowing
digest (verb) — to break food down so the body can use it
absorb (verb) — to take in or soak up
excrete (verb) — to pass waste out of the body
secrete (verb) — to make and release a substance (gland or cell)
urinate (verb) — to pass urine
expectorate (verb) — to cough up and spit out mucus
aspirate (verb) — to suction out; to breathe something into the lungs
constrict (verb) — to narrow or tighten
contract (verb) — to shorten and tighten (a muscle)
ambulate (verb) — to walk
respiration (noun) — breathing
kinetic (adjective) — relating to motion
flexion (noun) — bending a joint
extension (noun) — straightening a joint (opposite of flexion)
equilibrium (noun) — a state of balance
03

Constrict vs dilate

Commonly confused
ConstrictDilate
MeaningBecome narrower or tighterBecome wider or larger
PupilsGet smallerGet larger (in a dark room)
SynonymsNarrow, tightenWiden, enlarge, expand
04

In a sentence

Show 21 example sentences
occluded: An occluded artery can stop blood from reaching part of the heart muscle.
dilate: The pupils dilate in a dim room to let in more light.
patent: The nurse flushed the IV line to make sure it was still patent.
void: The patient had not voided for eight hours, so the nurse checked the bladder.
defecate: The patient has not defecated in three days and feels bloated.
ingest: The toddler may have ingested several vitamins left on the counter.
digest: Fatty meals take the patient longer to digest.
absorb: Most nutrients are absorbed through the wall of the small intestine.
excrete: The kidneys excrete extra salt and water in the urine.
secrete: The pancreas secretes insulin when blood sugar rises.
urinate: The patient reports needing to urinate several times each night.
expectorate: The nurse asked the patient to expectorate into the specimen cup.
aspirate: A patient who cannot swallow safely may aspirate thin liquids into the lungs.
constrict: Cold air can make the airways constrict.
contract: The heart muscle contracts to push blood out to the body.
ambulate: The patient was able to ambulate to the bathroom without help.
respiration: The nurse counted the patient's respirations for a full minute.
kinetic: Riding a bike turns the body's stored energy into kinetic energy.
flexion: The patient has limited flexion of the left knee after surgery.
extension: Full extension of the arm was painful after the fall.
equilibrium: The inner ear helps the body keep its equilibrium while standing.
Pearl

Occluded is closed, patent is open: a patent airway lets air through.

Sources · Collins English Dictionary — "occlude" · Collins English Dictionary — "dilate" · Collins English Dictionary — "patent" · Collins English Dictionary — "void" · Collins English Dictionary — "defecate" · Collins English Dictionary — "ingest" · Collins English Dictionary — "digest" · Collins English Dictionary — "absorb" · Collins English Dictionary — "excrete" · Collins English Dictionary — "secrete" · Collins English Dictionary — "urinate" · Collins English Dictionary — "expectorate" · Collins English Dictionary — "aspirate" · Collins English Dictionary — "constrict" · Collins English Dictionary — "contract" · Collins English Dictionary — "ambulate" · Collins English Dictionary — "respiration" · Collins English Dictionary — "kinetic" · Collins English Dictionary — "flexion" · Collins English Dictionary — "extension" · Collins English Dictionary — "equilibrium" · Union Test Prep — HESI A2 Vocabulary study guide, page 2 (health-care word lists) · Vocabulary.com — word list "HESI A2" · Vocabulary.com — word list "HESI" · NurseStudy.net — HESI A2 study guide, vocabulary list · Built from the verified NurseSavvy HESI A2 fact map (facts reviewed 2026-10-16). HESI is a trademark of Elsevier; NurseSavvy is not affiliated with Elsevier.

Words for Body Processes & Actions — Set 2

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Vocabulary · body processes

Words for Body Processes & Actions — Set 2

More body-process words: obstruct means block, retain means keep in, expel means force out, and a nutrient is what food supplies.

01 · Most testedObstruct = block a passage
02 · Most testedRetain = keep or hold in
03 · Most testedExpel = force out
01

Most-tested words

obstruct (verb) — to block a passage
retain (verb) — to keep or hold in
expel (verb) — to force out
nutrient (noun) — a substance in food the body needs
02

More words

compensatory (adjective) — making up for a loss or weakness
metabolism (noun) — the body's chemical processes that use food
atrophy (verb) — to waste away or shrink
desiccated (adjective) — dried out
exertion (noun) — physical or mental effort
circulate (verb) — to move around continuously (blood)
coagulate (verb) — to thicken; to clot
eliminate (verb) — to get rid of; to pass waste
inhale (verb) — to breathe in
perspire (verb) — to sweat
hypertrophy (noun) — enlargement as cells grow larger
dehydrate (verb) — to lose or remove water
regurgitate (verb) — to bring swallowed food back up
regenerate (verb) — to regrow or renew
inflate (verb) — to fill with air or gas
permeable (adjective) — letting substances pass through
03

Atrophy vs hypertrophy

Commonly confused
AtrophyHypertrophy
MeaningWaste away and shrinkGrow larger as cells enlarge
Common causeLack of use, poor nutrition, diseaseExtra work, such as exercise
ExampleLeg muscles after weeks in a castMuscles after weight training
04

In a sentence

Show 20 example sentences
obstruct: A piece of food can obstruct the airway and cause choking.
retain: The patient's ankles swell when the body retains extra fluid.
expel: A strong cough helps expel mucus from the airways.
nutrient: Iron is a nutrient the body needs to make red blood cells.
compensatory: A faster heart rate can be a compensatory response to bleeding.
metabolism: Thyroid hormone helps set the rate of metabolism.
atrophy: Leg muscles can atrophy after weeks in a cast.
desiccated: Left without a moist dressing, the wound became desiccated and cracked.
exertion: The patient becomes short of breath with exertion, such as climbing stairs.
circulate: The heart pumps to circulate blood to every tissue.
coagulate: Blood begins to coagulate within minutes of a small cut.
eliminate: The kidneys eliminate waste products from the blood.
inhale: Ask the patient to inhale slowly through the nose.
perspire: Patients with a fever often perspire heavily at night.
hypertrophy: Weight training causes hypertrophy of the trained muscles.
dehydrate: Vomiting and diarrhea can quickly dehydrate a small child.
regurgitate: The infant tends to regurgitate a little milk after each feeding.
regenerate: The liver can regenerate after part of it is removed.
inflate: The nurse inflated the blood pressure cuff around the patient's arm.
permeable: The cell membrane is permeable to water and oxygen.
Pearl

Retain keeps it in; expel forces it out.

Sources · Collins English Dictionary — "obstruct" · Collins English Dictionary — "retain" · Collins English Dictionary — "expel" · Collins English Dictionary — "nutrient" · Collins English Dictionary — "compensatory" · Collins English Dictionary — "metabolism" · Collins English Dictionary — "atrophy" · Collins English Dictionary — "desiccated" · Collins English Dictionary — "exertion" · Collins English Dictionary — "circulate" · Collins English Dictionary — "coagulate" · Collins English Dictionary — "eliminate" · Collins English Dictionary — "inhale" · Collins English Dictionary — "perspire" · Collins English Dictionary — "hypertrophy" · Collins English Dictionary — "dehydrate" · Collins English Dictionary — "regurgitate" · Collins English Dictionary — "regenerate" · Collins English Dictionary — "inflate" · Collins English Dictionary — "permeable" · Union Test Prep — HESI A2 Vocabulary study guide, page 2 (health-care word lists) · Vocabulary.com — word list "HESI A2" · Vocabulary.com — word list "HESI" · Brainscape — "Hesi A2 vocab YT vids" flashcards · Built from the verified NurseSavvy HESI A2 fact map (facts reviewed 2026-10-16). HESI is a trademark of Elsevier; NurseSavvy is not affiliated with Elsevier.

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