LAT LABORATORY ANIMAL TECHNICIAN EXAM
STUDY GUIDE 2026 PRACTICE QUESTIONS
AND SOLUTIONS
◉ Abomasum . Answer: The fourth stomach compartment of a ruminant
animal; the only compartment that secretes digestive enzymes and is
thus a true stomach.
◉ Abscess . Answer: A localized collection of pus accompanied by
swelling in any part of the body.
◉ Accessory Sex Gland . Answer: A gland associated with the
urogenital tract;for example, the prostate and seminal vesicles in males
which provide the fluid needed for sperm transport during ejaculation
◉ Acclimation period . Answer: The time given to a newly arrived
animal to become accuslomed to its new surroundings before the
research for which it is intended begins.
◉ Acetylcholine . Answer: A naturally occurring substance in the body t
hat is involved i n the transmission of nerve impulses.
,◉ Acid . Answer: Chemical or solution with a pH below 7.Chemicals
that have a very low pH can cause chemical burns to the skin and should
be handled cautiously.
◉ Acquired immunity . Answer: Immunity acquired through exposure
to an antigen,which results in the activation of immune cells and the
formation of antibodies to this antigen. Also called active immunity.
◉ Activity cage . Answer: A specialized animal unit or cage that allows
an animal to exercise freely while its activity is being recorded or
measured
◉ Acute disease . Answer: A disease having rapid onset and short
duration.
◉ Acute toxicity test . Answer: A test in which the test animal receives a
single dose of a test substance.
◉ Adduction . Answer: The movement of a bone toward the midline of
the body or toward the axis of an extremity
◉ Ad libitum . Answer: Making feed or water availble to the animal at
all times
,◉ Adipose tissue . Answer: tissue made up of cells that store fatty
substances,such as lipids and fatty acids. Used as a source of energy for
the body. Also called fatty tissue
◉ Adjuvant . Answer: A substance that enhances the potency of another
substance. In immunology. it is a substance that enhances the immune
response to antigens
◉ Adrenaline . Answer: A hormone that is secreted by the adrenal
medulla into the blood stream in response to physical or mental stress.
such as that caused by fear or injury. Adrenaline causes a rapid increase
in blood pressure. metabolic rate, and blood glucose concentration. Also
called epinephrine.
◉ Adrenergic . Answer: A drug, or other subtance that has effects
similar to epinephrine.
◉ Adventitious . Answer: Accidental or acquired; not natural or
hereditary
◉ Aerosol . Answer: A suspension, fine mist. or spray which contains
minute particles. Examples of common aerosolized particles include
pollen. medications (as in inhalation therapy)or pathogens
, ◉ Agar . Answer: A polymer made up of subunits of the sugar galactose
that becomes gelatinous when dissolved in hot water and cooled. Used
as medium for culturing microorganisms
◉ Agonist . Answer: A drug capable of stimulating physiologic activity
◉ Agouti . Answer: An animal color pattern in which the hairs are dark
brown with yellow bands close to the tips.giving the animal a light
brown appearance.
◉ Agranulocyte . Answer: A white blood cell that contains a multilobed
nucleus and has microscopic granules in its cytoplasm; types include
leukocytes and monocytes.
◉ Air exchange . Answer: The number of times per hour the ventilation
system replaces the air in the room.
◉ Albino . Answer: A inherited condition marked by the absence of
melanin, resulting in non pigmented skin. coat, and eyes. An albino
animal has white fur or feathers and pink eyes (irises).
◉ Alimentary canal . Answer: A long tube extending from the mouth to
the anus: includes organs such as the stomach and intestines. Also called
the gastrointestinal tract.
STUDY GUIDE 2026 PRACTICE QUESTIONS
AND SOLUTIONS
◉ Abomasum . Answer: The fourth stomach compartment of a ruminant
animal; the only compartment that secretes digestive enzymes and is
thus a true stomach.
◉ Abscess . Answer: A localized collection of pus accompanied by
swelling in any part of the body.
◉ Accessory Sex Gland . Answer: A gland associated with the
urogenital tract;for example, the prostate and seminal vesicles in males
which provide the fluid needed for sperm transport during ejaculation
◉ Acclimation period . Answer: The time given to a newly arrived
animal to become accuslomed to its new surroundings before the
research for which it is intended begins.
◉ Acetylcholine . Answer: A naturally occurring substance in the body t
hat is involved i n the transmission of nerve impulses.
,◉ Acid . Answer: Chemical or solution with a pH below 7.Chemicals
that have a very low pH can cause chemical burns to the skin and should
be handled cautiously.
◉ Acquired immunity . Answer: Immunity acquired through exposure
to an antigen,which results in the activation of immune cells and the
formation of antibodies to this antigen. Also called active immunity.
◉ Activity cage . Answer: A specialized animal unit or cage that allows
an animal to exercise freely while its activity is being recorded or
measured
◉ Acute disease . Answer: A disease having rapid onset and short
duration.
◉ Acute toxicity test . Answer: A test in which the test animal receives a
single dose of a test substance.
◉ Adduction . Answer: The movement of a bone toward the midline of
the body or toward the axis of an extremity
◉ Ad libitum . Answer: Making feed or water availble to the animal at
all times
,◉ Adipose tissue . Answer: tissue made up of cells that store fatty
substances,such as lipids and fatty acids. Used as a source of energy for
the body. Also called fatty tissue
◉ Adjuvant . Answer: A substance that enhances the potency of another
substance. In immunology. it is a substance that enhances the immune
response to antigens
◉ Adrenaline . Answer: A hormone that is secreted by the adrenal
medulla into the blood stream in response to physical or mental stress.
such as that caused by fear or injury. Adrenaline causes a rapid increase
in blood pressure. metabolic rate, and blood glucose concentration. Also
called epinephrine.
◉ Adrenergic . Answer: A drug, or other subtance that has effects
similar to epinephrine.
◉ Adventitious . Answer: Accidental or acquired; not natural or
hereditary
◉ Aerosol . Answer: A suspension, fine mist. or spray which contains
minute particles. Examples of common aerosolized particles include
pollen. medications (as in inhalation therapy)or pathogens
, ◉ Agar . Answer: A polymer made up of subunits of the sugar galactose
that becomes gelatinous when dissolved in hot water and cooled. Used
as medium for culturing microorganisms
◉ Agonist . Answer: A drug capable of stimulating physiologic activity
◉ Agouti . Answer: An animal color pattern in which the hairs are dark
brown with yellow bands close to the tips.giving the animal a light
brown appearance.
◉ Agranulocyte . Answer: A white blood cell that contains a multilobed
nucleus and has microscopic granules in its cytoplasm; types include
leukocytes and monocytes.
◉ Air exchange . Answer: The number of times per hour the ventilation
system replaces the air in the room.
◉ Albino . Answer: A inherited condition marked by the absence of
melanin, resulting in non pigmented skin. coat, and eyes. An albino
animal has white fur or feathers and pink eyes (irises).
◉ Alimentary canal . Answer: A long tube extending from the mouth to
the anus: includes organs such as the stomach and intestines. Also called
the gastrointestinal tract.
