breed

I

iatrogenic

Anything that is created through a method of treatment

iatrogenic disease

An illness that is created through a method of treatment

icterus

Another term for jaundice

ictus

A seizure or attack

identical twins

Twins that come from one egg that separates after it is fertilized

idiopathic

Relating to a disease of unknown origin, which may or may not have arisen spontaneously

ileectomy

The removal of the ileum by surgery

ileitis

A condition that results from inflammation of the ileum

ileostomy

The production of an opening between the wall of the abdomen and the ileum

ileum

The term for the last part of the small intestine, between the jejunum and the large intestine.

ileus

The term for when peristalsis of the intestines ceases

ilium

The bones in the pelvis

imbricate

To tighten something with sutures

imbrication

The act of overlapping surfaces that would normally oppose one another

immobilization

Making something hold fast; not letting something move

immunity

The act of not being able to catch a certain disease or illness

immunize

To keep an animal free from disease by making it resistant through vaccination

immunizing agent

Any substance that helps to create antibodies to resist an infection or disease

immunoglobulin

A type of antibody in the plasma; there are five of them

immunology

The study of the processes of the immune system

immunosuppressant

Something that makes the body more susceptible to disease

immunosuppression

The reduction in the amount of resistance the body has to a disease

impaction

The blockage of an area with dry feed

implant

Anything that is grafted into the body

implantation

An attachment of the zygote inside the uterus

impotence

Inability to reproduce; lack of virility

impregnate

To make an animal pregnant

impulse

A wave that is transmitted through nerves and nervous tissue

in foal

The term for a mare that is pregnant

in heat

The term for an animal that is ready to mate with a male or in estrus

in utero

Inside the uterus

in vitro

The term for living organisms inside the test tube

in vitro fertilization

The term for creating a fetus by fertilizing egg and sperm in a Petri dish and then implanting the egg; artificial insemination.

in vivo

Inside a living organism

inappetence

A lack of desire for food

inappropriate urination

The dropping of urine at the wrong time or place

inbred

An animal whose parents show common ancestry; breeding between relatives

inbreeding

The mating of animals who are closely related, like father and daughter or brother and sister

incise

To cut into, as in surgically

incision

A cut into a body tissue or organ

incisional biopsy

The cutting of a piece of tissue or organ for medical examination

incisors

The term for the front teeth that are used for cutting

inclusion

A nonliving substance in a cell

incomplete dominance

A type of gene that does not completely cover up its allele; co dominance

incontinence

The ability to control excretions from the body

incubation

The process of turning an egg into a bird

incubator

A machine that provides the optimum environment for an embryo to develop

index

A type of system that is used to compare animals within a given group to one another

indigestion

A medical condition in which the digestive process is disturbed in some way from something like too much food, spoiled food, etc.

indiscriminate breeder

An animal that will breed with any animal it can

induced ovulator

The term for an animal that ovulates due to sexual activity

inert ingredient

Any substance in feed that does not give nutritional value to the food, as in a filler

infarct

An area of necrosis that has been created by a slow down or stop in blood supply

infect

To cause disease by introducing germs or fungus

infectious

Something that has the ability to be transferred from something to something else

infectious disease

A type of disorder that is caused by a pathogen, such as fungi or viruses in the body

infective

Something that has the ability to infect a living thing

inferior

Less important, below, toward the bottom or back

infertile

Something that is not capable of reproducing

infest

To attack something or take it over, as in the way ticks can infest a dog

infestation

The act of being taken over by a large number of something, usually parasites

inflammation

A type of swelling or pain that is the body’s way of warding off injury, pain, or illness

infundibulum

An opening that is shaped like a funnel

infuse

To put a liquid or medicine into something

ingest

To take food in by mouth

ingesta

Material that is absorbed through the mouth

inguinal canal

The opening in the wall of the abdomen from where the testes move into the scrotum

inguinal hernia

A condition in which the bowels protrude through a thin area of the groin

inhalants

Medicines that can be inhaled

inhalation

The act of drawing something into the lungs by breathing

inheritance

Transmitting genes from parent to child

inherited characteristic

A trait that has been determined by genes

inhibit

To slow something down or cause it to stop

inject

To mechanically introduce a substance into a living thing

innervate

To stimulate the nerves

innervation

To stimulate a body part through nerve action

inoculation

The introduction of an animal to an organism in order to create a slight disease to induce immunity

inotrope

A substance that affects the way that the muscles contract

insect

An animal that breathes air and has a head, thorax, and abdomen

insect growth regulator

A type of chemical that inhibits the growth process of insects, leading to death

insecticide

A chemical that kills insects by poison or fumigant

inseminate

To put semen into a vagina during coitus or to do so artificially by a method other than intercourse

inseminating tube

A tube made up of rubber or glass that is used to artificially inseminate a female animal

insidious disease

A disease that develops over an extended period of time

inspissation

The process of drying and thickening due to evaporation

instict

The set of knowledge that an animal has due to its genetics; behavior that is not learned

insufficiency

The lack of ability to perform properly at a functional level

insufflation

Blowing a powder into the nose as a form of medication administration

insulin

A hormone created by the pancreas that helps to regulate the flow of glucose

intact

Denotes an animal that is still able to reproduce or is free of cuts and scrapes

integumentary

Having to do with the skin and hair as well as the sweat and oil glands in the body

interbreeding

Breeding within the family as a way of predicting desirable characteristics

intercellular

Found between the cells

intercostal

Found between the ribs

intercrossing

Crossing breeds

interdigital

Found between the toes

intermediate host

A host that is not the primary host in which a parasite may reside for a portion of the life cycle

interphalangeal

Found between the phalanges

intersex

A term that denotes an organism that has characteristics of both male and female

interspecific

Something that refers to events that occur between different species of animals

interspecific hybrid

An animal that is a cross between two species

interstitial

The area inside a given tissue or organ

interstitial cystitis

The swelling or inflammation of the bladder

interstitial fluid

The fluid that flows between the cells of a given organ or bodily tissue

interventricular

Found between the ventricles

intervertebral disc

The padding found between the vertebrae that keeps them from rubbing together

intestinal crypt

The membranes that line the inside of the small intestine

intestinal flora

The organisms and bacteria that are found inside the gastrointestinal system

intestine

The part of the digestive system found between the stomach and the anus

intra op

The term that is used to refer to something that occurs during surgery

intracapsular extraction

The removal of cataracts and the capsule around them

intracellular

Inside the cell

intracervical method

A method of artificial insemination where semen is placed inside the cervix and not the vagina

intracranial

Found inside the cranium

intradermal

Found inside the skin

intramedullary pins

Pins that are used to repair fractures

intramuscular

Found inside the muscle

intranasal

Found inside the nose or the nostrils

intranasal instillation

The placement of medicine inside the nasal cavity as a form of administration

intraocular

Found inside the eye

intraocular vaccination

Administration of a vaccine by placing it inside the eye

intraperitoneal

Found inside the peritoneal cavity

intratracheal

Found inside the windpipe or trachea

intrauterine

Found inside the uterus

intravenous

Found inside the vein

introduced

The word for an animal or plant that is not native to an area but is accidentally brought in somehow.

introgastric

Inside the stomach

intromission

The introduction or insertion of one part into another part

intussusceptions

The insertion of one part of the intestine into the next part

inversion

Turning something inside out

invertebrate

Designates an animal that has no spine

inverted nipple

A teat that is turned upside down; usually has no function

involucrum

The covering that contains part of a bone

involution

The act of returning to normal size after swelling, usually has to do with an organ (like the uterus)

ion

An atom that has a positive or negative charge

ionized

Something with an electrical charge

ionophore

An additive to food that makes it more digestible and efficient in ruminants

ipsilateral

On the very same side as something

iridectomy

The removal of part of the iris by surgical means

iridocorneal

Denotes the iris and the cornea

iris

The colored layer around the pupil

iritis

The medical condition that results from inflammation of the iris

ischemia

A blood deficiency

ischium

The caudal bones in the pelvis

isoechoic

A type of tissue that appears the same as tissue around it when looking at ultrasound

isogamy

The fusing of gametes; causes similarity in them

isolate

To keep one animal away from another for any reason

isthmus

A thin piece of tissue that connects two larger parts of tissue

iteratrial

Denoting something that can be found between the atria