Copy of `Dorland's Medical Dictionary`

The wordlist doesn't exist anymore, or, the website doesn't exist anymore. On this page you can find a copy of the original information. The information may have been taken offline because it is outdated.

Dorland's Medical Dictionary Category: Health and Medicine > Medical Dictionary Date & country: 31/12/2010, USA Words: 39128

intermediate nerve
the smaller root of the facial nerve, lying between the main root and the vestibulocochlear nerve; branches, chorda tympani and greater petrosal nerve; distribution, lacrimal, nasal, palatine, submandibular, and sublingual glands, and anterior two-thirds of tongue; modality, parasympathetic and special sensory.

intermediate supraclavicular nerves
origin, cervical plexus (C3–C4); distribution, descend in the posterior triangle, cross the clavicle, and supply the skin over pectoral and deltoid regions; modality, general sensory.

intermediate-acting insulin
an insulin preparation whose onset of action is from 1.5 to 3.0 hours after injection and peak of action is between about 6 and 12 hours after injection. Examples include isophane insulin suspension and insulin zinc suspension.

intermediate-density lipoprotein
(IDL) a class of lipoproteins formed in the degradation of very-low-density lipoproteins; approximately half are cleared rapidly from the plasma into the liver by endocytosis, and the other half are further degraded to form low-density lipoproteins.

intermedius
(in″tәr-me´de-әs) Latin word meaning intermediate. in anatomy, it denotes a structure lying between a lateral and a medial structure.

intermeningeal
(in″tәr-mә-nin´je-әl) between the meninges.

intermenstrual pain
pain accompanying ovulation, occurring during the period between the menses, usually about midway.

intermittent
(in″tәr-mit´әnt) marked by alternating periods of activity and inactivity.

intermittent claudication
a group of symptoms characterized by pain, cramping, and weakness in the calf muscles of one or both lower limbs, brought on by walking and relieved by resting. It is a form of arterial occlusive disease and is caused by atherosclerotic lesions of the limbs, which diminish blood supply to the muscles of the lower leg. Called al...

intermittent double-step gait
a hemiplegic gait in which there is a pause after the short step of the normal foot, or in some cases after the step of the affected foot.

intermittent explosive disorder
a rare impulse control disorder in which a person periodically loses control of aggressive impulses and does serious assault or destruction of property; the outbursts are far out of proportion to any apparent stress.

intermittent fever
an attack of malaria or other fever characterized by recurring paroxysms of elevated temperature separated by intervals during which the temperature is normal.

intermittent hepatic fever
a fever occurring intermittently as the result of intermittent impaction of a calculus in the common bile duct with inflammation of the duct.

intermittent mandatory ventilation
(IMV) a type of control mode ventilation in which the patient breathes spontaneously while the ventilator delivers a prescribed tidal volume at specified intervals and allows the patient to breathe spontaneously between cycles. The ventilator rate is set to maintain the patient's PaCO2 at desired levels and is red...

intermural
(in-tәr-mu´rәl) between the walls of an organ or organs.

intermuscular
(in″tәr-mus´ku-lәr) between muscles.

intermuscular hernia
an interstitial hernia lying between one or another of the fascial or muscular planes of the abdomen.

intern
(in´tәrn) a medical or dental graduate who serves in a hospital in preparation for being licensed to practice medicine or dentistry. any of certain types of allied health professionals who enter a working and learning environment under the supervision of someone with more experience.

internal
(in-tur´nәl) situated or occurring within or on the inside, as in a hollow structure; in anatomy, many structures formerly called internal are now termed medial.

internal acoustic meatus
see acoustic meatus.

internal auditory artery
labyrinthine artery.

internal auditory foramen
the passage for the auditory (vestibulocochlear) and facial nerves in the petrous part of the temporal bone.

internal auditory veins
labyrinthine veins.

internal capsule
the fanlike mass of white fibers separating the lentiform nucleus laterally from the head of the caudate nucleus, the dorsal thalamus, and the tail of the caudate nucleus medially. The internal capsule carries both afferent and efferent fibers of the cerebral cortex.

internal carotid artery
origin, common carotid; divided into four parts: cervical, petrous, cavernous, and cerebral; branches, numerous, including caroticotympanic arteries; tentorial basal, tentorial marginal, meningeal, and cavernous branches, and inferior hypophysial artery; ophthalmic, superior hypophysial, posterior communicating, anterior choroi...

internal carotid nerve
origin, superior cervical ganglion; distribution, cranial blood vessels and glands via internal carotid plexus; modality, sympathetic.

internal cerebral veins
two veins that arise at the interventricular foramen by the union of the thalamostriate and the choroid veins; they pass backward through the tela choroidea, collecting blood from the basal nuclei, and unite at the splenium of the corpus callosum to form the great cerebral vein.

internal hemorrhage
one in which the extravasated blood remains within the body.

internal hernia
direct inguinal hernia.

internal iliac artery
origin, continuation of common iliac artery; branches, iliolumbar, obturator, superior gluteal, inferior gluteal, umbilical, inferior vesical, uterine, middle rectal, and internal pudendal arteries; distribution, wall and internal organs of pelvis, buttock, reproductive organs, inner side of thigh.

internal iliac vein
a short trunk formed by the joining of parietal branches; it extends from the greater sciatic notch to the brim of the pelvis, where it joins the external iliac vein to form the common iliac vein.

internal inguinal ring
deep inguinal ring.

internal intercostal muscles
origin, inferior border of rib and costal cartilage (11 on each side); insertion, superior border of rib and costal cartilage below; innervation, intercostal nerves; action, draw ribs together in respiration and expulsive movements, and also act in inspiration.

internal jugular catheter
a central venous catheter inserted through the internal jugular vein.

internal jugular vein
the vein that begins as the superior bulb in the jugular fossa, draining much of the head and neck; it descends with first the internal carotid artery and then the common carotid artery in the neck, and joins with the subclavian vein to form the brachiocephalic vein.

internal laryngeal nerve
internal branch of superior laryngeal nerve: the larger of the two branches of the superior laryngeal nerve, which innervates the mucosa of the epiglottis, base of the tongue, and larynx; modality, general sensory.

internal mammary artery
internal thoracic artery.

internal maxillary artery
maxillary artery.

internal medicine
the medical specialty that deals with diagnosis and medical treatment of diseases and disorders of internal structures of the body.

internal oblique muscle of abdomen
origin, inguinal ligament, iliac crest, thoracolumbar fascia; insertion, inferior three or four costal cartilages, linea alba, conjoined tendon to pubis; innervation, seventh to twelfth intercostal nerves, first lumbar nerve; action, flexes and rotates vertebral column, increases intra-abdominal pressure, acts as accessory respirator...

internal obturator muscle
obturator internus muscle.

internal pacemaker
implanted pacemaker.

internal pudendal artery
origin, internal iliac artery; branches, posterior scrotal or posterior labial branches and inferior rectal, perineal, urethral arteries, artery of bulb of penis or vestibule, deep artery of penis or clitoris, dorsal artery of penis or clitoris; distribution, external genitalia, anal canal, perineum.

internal pudendal vein
a vein that follows the course of the internal pudendal artery, and drains into the internal iliac vein.

internal respiration
the exchange of gases between the body cells and the blood.

internal spermatic artery
testicular artery.

internal thoracic artery
origin, subclavian artery; branches, mediastinal, thymic, bronchial, tracheal, sternal, perforating, medial mammary, lateral costal, and anterior intercostal branches, pericardiacophrenic, musculophrenic, and superior epigastric arteries; distribution, anterior thoracic wall, mediastinal structures, diaphragm.

internal thoracic veins
two veins (left and right) formed by junction of the veins accompanying the left and right internal thoracic arteries; each internal thoracic vein then continues along the artery to open into the corresponding brachiocephalic vein.

internal urethral orifice
the opening from the urinary bladder into the urethra at one corner of the trigone of the bladder.

internal urethral sphincter
a circular layer of smooth muscle fibers surrounding the internal urethral orifice in males, innervated by the vesical nerve, and acting to close the internal orifice of the urethra. No such structure exists in females.

internal version
that done using the hand or fingers inserted through the dilated cervix.

internalization
(in-tur″nәl-ĭ-za´shәn) a mental mechanism whereby certain external attributes, attitudes, or standards are unconsciously taken as one's own.

internatal
(in″tәr-na´tәl) intergluteal.

International Nonproprietary Name
(INN) the nonproprietary designation recommended by the World Health Organization for any pharmaceutical preparation.

International System of Units
see SI unit.

International unit
(IU) a unit of enzyme activity equal to the amount of enzyme that catalyzes the conversion of one micromole of substrate or coenzyme per minute under specified conditions (temperature, pH, and substrate concentration) of the assay method. Abbreviated U. any of several arbitrary units that have been a...

interneuron
(in″tәr-noor´on) a neuron between the primary afferent neuron and the final motor neuron (motoneuron). Also any neuron whose processes lie entirely within a specific area, such as the olfactory lobe. Interneuron as part of a three-neuron reflex arc in the spinal cord.

internist
(in-tur´nist) a specialist in internal medicine.

internode
(in´tәr-nōd) a space between two nodes.

internuclear
(in″tәr-noo´kle-әr) situated between nuclei or between nuclear layers of the retina.

internuncial
(in″tәr-nun´she-әl) transmitting impulses between two different parts.

internus
(in-tur´nәs) Latin word meaning internal. In anatomy, it is used for a structure that is nearer to the center of an organ or part than another one is.

interoception
(in″tәr-o-sep´shәn) the perceiving of stimuli within the viscera by interoceptors.

interoceptive
(in″tәr-o-sep´tiv) pertaining to interoceptors. pertaining to interoception.

interoceptive nervous system
that system which transmits afferent impulses from viscera by fibers which run centrally either in autonomic or somatic nerves.

interolivary
(in″tәr-ol´ĭ-var″e) between the olivary bodies.

interorbital
(in″tәr-or´bĭ-tәl) between the orbits.

interosseous
(in″tәr-os´e-әs) between two bones.

interosseous nerve of leg
origin, tibial nerve; distribution, interosseous membrane and syndesmosis between tibia and fibula; modality, general sensory.

interpalpebral
(in″tәr-pal´pә-brәl) between the eyelids.

interpalpebral zone
the part of the cornea not covered by the eyelids when the eye is open.

interparietal
(in″tәr-pә-ri´ә-tәl) intermural. between the parietal bones.

interparietal hernia
intermuscular hernia.

interparoxysmal
(in″tәr-par″ok-siz´mәl) between paroxysms.

interpeduncular fossa
a depression on the inferior surface of the midbrain, between the two cerebral peduncles, the floor of which is the posterior perforated substance.

interpelviabdominal amputation
amputation of the lower limb with excision of the lateral portion of the pelvic girdle.

interphalangeal
(in″tәr-fә-lan´je-әl) situated between two contiguous phalanges.

interphase
(in´tәr-fāz) the portion of the cell cycle between two successive cell divisions, during which normal cellular metabolism occurs and DNA is synthesized.

interplant
(in´tәr-plant) an embryonic part isolated by transference to an indifferent environment provided by another embryo.

interpolated extrasystole
a contraction taking place between two normal heartbeats.

interpolation
(in-tur″po-la´shәn) the determination of intermediate values in a series on the basis of observed values.

interposition operation
Watkins operation.

interpretation
(in-tur″prә-ta´shәn) in psychotherapy, the therapist's periodic explanation to the patient of the latent content or hidden meanings of the patient's mental phenomena as expressed through free association, descriptions of dreams, and other aspects.

interproximal
(in″tәr-prok´sĭ-mәl) between two adjoining surfaces, as between the proximal surfaces of adjacent teeth.

interproximal space
interproximate space the space between the proximal surfaces of adjoining teeth; called also proximal or proximate space.

interpubic
(in″tәr-pu´bik) between the pubic bones.

interpupillary
(in″tәr-pu´pĭ-lar″e) between the pupils.

interradicular septum
interalveolar septum (def. 1).

interrenal body
an elongated organ that lies between the kidneys in elasmobranch fishes and that corresponds to the adrenal medulla in mammals.

interrupted suture
one in which each stitch is made with a separate piece of material.

interscapular
(in″tәr-skap´u lәr) between the scapulae.

interscapular reflex
a stimulus applied between the scapulae contracts the scapular muscles; called also scapular reflex.

interscapulothoracic amputation
amputation of the upper limb with excision of the lateral portion of the shoulder girdle.

intersectio
(in″tәr-sek´she-o) Latin word meaning intersection; a term used in anatomy. intersectio tendinea a fibrous band traversing the belly of a muscle, dividing it into two parts.

intersection
(in″tәr-sek´shәn) a site at which one structure crosses another.

intersex
(in´tәr-seks) hermaphrodite. pseudohermaphrodite. female intersex a female pseudohermaphrodite. male intersex a male pseudohermaphrodite. true intersex a true hermaphrodite.

intersexuality
(in″tәr-sek″shoo-al´ĭ-te) hermaphroditism. pseudohermaphroditism.

intersigmoid hernia
herniation of intestine through the intersigmoid fossa.

interspace
(in´tәr-spās) a space between similar structures.

interspinal
(in″tәr-spi´nәl) between two of the spinous processes of vertebrae.