Copy of `Dorland's Medical Dictionary`

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

palatopharyngeus muscle
palatopharyngeal muscle: one of the intrinsic muscles of the larynx; origin, soft palate; insertion, aponeurosis of pharynx, posterior border of thyroid cartilage; innervation, pharyngeal plexus of vagus nerve; action, aids in swallowing.

palatopharyngoplasty
(pal″ә-to-fә-ring´go-plas″te) a trimming back of excess palatal and pharyngeal tissue, done in order to widen the airway and relieve obstructive sleep apnea or severe snoring.

palatoplasty
(pal´ә-to-plas″te) plastic reconstruction of the palate, such as to repair a cleft palate.

palatoplegia
(pal″ә-to-ple´jә) paralysis of the palate.

palatorrhaphy
(pal″ә-tor´ә-fe) surgical repair of a cleft palate; see also palatoplasty.

palatum
(pә-la´tәm) Latin word meaning palate; at term used in anatomy.

paleocerebellum
(pa″le-o-ser″ә-bel´әm) originally, the phylogenetically older parts of the cerebellum; the term is now applied specifically to those parts whose inflow via afferent pathways is predominantly supplied by spinocerebellar fibers. adj., paleocerebel´lar., adj.

paleocortex
(pa″le-o-kor´teks) that portion of the cerebral cortex that, with the archeocortex, develops in association with the olfactory system, and which is phylogenetically older and less stratified than the neocortex. It is composed chiefly of the piriform cortex and the parahippocampal gyrus.

paleogenetic
(pa″le-o-jә-net´ik) originated in the past; said of traits, structures, and other aspects of species that are not newly acquired.

paleopathology
(pa″le-o-pә-thol´ә-je) study of disease in bodies that have been preserved from ancient times.

paleostriatal syndrome
juvenile paralysis agitans.

paleostriatum
(pa″le-o-stri-a´tәm) the phylogenetically older portion of the corpus striatum, represented by the globus pallidus. adj., paleostria´tal., adj.

palikinesia
(pal″ĭ-kĭ-ne´zhә) pathologic repetition of movements.

palilalia
(pal″ĭ-la´le-ә) paliphrasia.

palindromia
(pal″in-dro´me-ә) a recurrence or relapse. adj., palindrom´ic., adj.

palingraphia
(pal″in-graf´e-ә) pathologic repetition of words or phrases in writing.

palinopsia
(pal″ĭ-nop´se-ә) visual perseveration; the pathologic continuance or recurrence of a visual sensation after the stimulus is gone.

palinphrasia
(pal″in-fra´zhә) a dysphasia involving repetition of words or phrases; see also stuttering. Called also palilalia.

palisaded histiocytes
palisading histiocytes histiocytes in a palisaded formation around a skin lesion of degenerated collagen, seen in rheumatoid neutrophilic dermatitis.

palivizumab
(pal″ĭ-viz´u-mab) a monoclonal antibody against respiratory syncytial virus, used as a passive immunizing agent against infection with the virus in susceptible infants and children; administered intramuscularly.

palladium
(Pd) (pә-la´de-әm) a chemical element, atomic number 46, atomic weight 106.4. It is used in alloys for dental and orthodontic appliances.

pallanesthesia
(pal″әn-es-the´zhә) loss or absence of pallesthesia.

pallesthesia
(pal″es-the´zhә) sensibility to vibrations; the peculiar vibrating sensation felt when a vibrating tuning-fork is placed against a subcutaneous bony prominence of the body. adj., pallesthet´ic., adj.

palliate
(pal´e-āt) to relieve symptoms.

palliative
(pal´e-ә-tiv) giving relief but not curing. a drug with this effect.

palliative care
supportive care.

pallidal atrophy
pallidal syndrome juvenile paralysis agitans.

pallidal degeneration
neurodegeneration involving the globus pallidus, as in juvenile paralysis agitans.

pallidectomy
(pal″ĭ-dek´tә-me) complete removal of the globus pallidus.

pallidoluysian
(pal″ĭ-do-lwe´se-әn) conducting or proceeding from the globus pallidus to the subthalamic nucleus (nucleus of Luys). pertaining to or including the globus pallidus and subthalamic nucleus (nucleus of Luys).

pallidotomy
(pal″ĭ-dot´ә-me) creation of lesions by stereotaxic surgery in the globus pallidus for treatment of extrapyramidal diseases.

pallidum
(pal´ĭ-dәm) globus pallidus. adj., pal´lidal., adj.

Pallister-Killian syndrome
(pal´is-tәr kil´e-әn) a rare syndrome of mosaicism in which only the fibroblasts are aneuploid, having 47 chromosomes instead of 46. This results in mental retardation, seizures, streaks of discoloration on the skin, various facial anomalies, and less often defects of limbs, heart, or other structures. Calle...

pallium
(pal´e-әm) cerebral cortex. the cerebral cortex during its development.

pallor
(pal´әr) paleness, as of the skin.

palm
(pahm) (pahlm) the hollow or flexor surface of the hand. adj., pal´mar., adj.

palm-chin reflex
palmomental reflex twitching of the chin produced by stimulating (scratching) the palm; called also Marinesco-Radovici reflex and Radovici sign.

palma
(pahl´mә) Latin word meaning palm; a term used in anatomy.

palmar digital veins
the veins following the distribution of the proper and common palmar digital arteries; they join the superficial palmar venous arch.

palmar fibromatosis
fibromatosis involving the palmar fascia, and resulting in a Dupuytren contracture.

palmar interossei muscles
palmar interosseous muscles (3): origin, sides of second, fourth, and fifth metacarpal bones; insertion, bases of proximal phalanges and corresponding extensor expansions of second, fourth, and fifth fingers; innervation, ulnar nerve; action, adduct fingers, flex proximal phalanges, extend middle and distal phalanges.

palmar metacarpal arteries
origin, deep palmar arch; branches, none; distribution, deep parts of metacarpus.

palmar metacarpal veins
the veins following the distribution of the palmar metacarpal arteries; they drain into the deep palmar venous arch.

palmar reflex
flexion of the fingers in response to scratching of the palm.

palmar space
a large fascial space in the hand, divided by a fibrous septum into a midpalmar and a thenar space.

palmaris
(pahl-mar´is) palmar.

palmaris brevis muscle
origin, palmar aponeurosis; insertion, skin of medial border of hand; innervation, ulnar nerve; action, assists in deepening hollow of palm.

palmaris longus muscle
origin, medial epicondyle of humerus; insertion, flexor retinaculum of hand, palmar aponeurosis; innervation, median nerve; action, flexes wrist joint, anchors skin and fascia of hand.

palmate folds
a system of folds on the anterior and posterior walls of the cervical canal of the uterus.

Palmer tooth notation system
a tooth numbering system in which each quadrant is designated 1 through 8 (permanent teeth) or A through E (primary teeth), working from the midline laterally, with the quadrant specified by a bracket made up of a combination of a vertical and a horizontal line that is specific to each quadrant.

palmitate
(pal´mĭ-tāt) the anionic form of palmitic acid.

palmitic acid
(pal-mit´ik) a saturated fatty acid from animal and vegetable fats.

palmoplantar hyperkeratosis
palmoplantar keratodermapalmoplantar keratosis keratoderma palmare et plantare.

palpable
(pal´pә-bәl) perceptible by touch.

palpate
(pal´pāt) to perform palpation.

palpation
(pal-pa´shәn) the act of feeling with the hand; the application of the fingers with light pressure to the surface of the body for the purpose of determining the condition of the parts beneath in physical diagnosis. bimanual palpation palpation with both hands in the physical e...

palpebra
(pal´pә-brә) Latin word meaning eyelid; a term used in anatomy.

palpebral
(pal´pә-brәl) pertaining to an eyelid.

palpebral fissure
the longitudinal opening between the eyelids.

palpebral veins
small branches from the eyelids that open into the superior ophthalmic vein.

palpebritis
(pal″pә-bri´tis) blepharitis.

palpitation
(pal″pĭ-ta´shәn) a heartbeat that is unusually rapid, strong, or irregular enough to make a person aware of it, usually over 120 beats per minute, as opposed to the normal 60 to 100 per minute. In most cases, it is the result of excitement, nervousness, strong exertion, or taking of certain medica...

PALS
pediatric advanced life support.

palsy
(pawl´ze) paralysis.

paludism
(pal´u-diz-әm) malaria.

pamabrom
(pam´ә-brom) a mild diuretic used in preparations for the relief of premenstrual symptoms.

Pamelor
(pam´ә-lor) trademark for a preparation of nortriptyline hydrochloride, a tricyclic antidepressant.

pamidronate
(pam″ĭ-dro´nāt) an inhibitor of bone resorption, used to treat malignancy-associated hypercalcemia, Paget disease of bone, and osteolytic metastasis secondary to breast cancer or myeloma; used as the disodium salt. Complexed with technetium 99m, it is used in bone imaging.

pamoate
(pam´o-āt) USAN contraction for 4,4´-methylenebis[3-hydroxy-2-naphthoate].

pampiniform
(pam-pin´ĭ-form) shaped like a tendril.

pampiniform plexus
in the male, a plexus of veins from the testis and the epididymis, constituting part of the spermatic cord. in the female, a plexus of ovarian veins draining the ovary.

panacea
(pan″ә-se´ә) a remedy for all diseases.

panacinar
(pan-as´ĭ-nәr) affecting many acini or alveoli.

panacinar emphysema
panlobular emphysema generalized obstructive emphysema affecting all lung segments, with atrophy and dilatation of the alveoli and destruction of the vascular bed.

panagglutinin
(pan″ә-gloo´tĭ-nin) an agglutinin that agglutinates the erythrocytes of all human blood groups.

panangiitis
(pan″an-je-i´tis) diffuse necrotizing inflammation involving all the coats of a vessel.

panarthritis
(pan″ahr-thri´tis) inflammation of all the joints.

panatrophy
(pan-at´rә-fe) atrophy of several parts; diffuse atrophy.

panautonomic
(pan″aw-tә-nom´ik) pertaining to or affecting the entire autonomic (sympathetic and parasympathetic) nervous system.

pancarditis
(pan″kahr-di´tis) diffuse inflammation of the heart.

Pancoast suture
a form of tongue-and-groove suture; see plastic suture.

Pancoast syndrome
(pan´kōst) radiographic shadow at the apex of the lung, neuritic pain in the upper limb, atrophy of the muscles of the arm and hand, and Horner syndrome; this is observed with a tumor near the apex of the lung, due to involvement of the brachial plexus. osteolysis in the posterior part of one or more ...

Pancoast tumor
pulmonary sulcus tumor.

pancolectomy
(pan″ko-lek´tә-me) excision of the entire colon, with creation of an outlet from the ileum on the body surface.

pancreas
(pan´kre-әs) pl. pancre´ata a large, elongated gland found in a more or less horizontal position behind the stomach, between the spleen and duodenum. It is composed of both exocrine and endocrine tissue. The acini secrete digestive enzymes, and small ducts leading from them secrete sodium bicarbonate solution. The ...

pancreatalgia
(pan″kre-ә-tal´jә) pain in the pancreas.

pancreatectomy
(pan″kre-ә-tek´tә-me) excision of the pancreas.

pancreatic
(pan″kre-at´ik) pertaining to the pancreas.

pancreatic cholera syndrome
Verner-Morrison syndrome.

pancreatic duct
the main excretory duct of the pancreas, which usually unites with the common bile duct before entering the duodenum at the major duodenal papilla.

pancreatic enzyme therapy
pancreatic enzyme replacement therapy replacement therapy for conditions of pancreatic insufficiency with malabsorption, such as cystic fibrosis.

pancreatic function test
see specific tests, such as bentiromide test, cholecystokinin test, Lundh test, mixed triglyceride breath test, pancreolauryl test, secretin test, and triolein breath test.

pancreatic polypeptide
a hormone (4200 daltons, 36 amino acids) secreted by special endocrine cells in the periphery of some pancreatic islets, the exocrine pancreas, and the intestine; it inhibits pancreatic enzyme secretion and gallbladder contraction, but its physiologic role has not been identified.

pancreatic veins
numerous veins from the pancreas which open into the splenic and the superior mesenteric veins.

pancreaticoduodenal
(pan″kre-at″ĭ-ko-doo″o-de´nәl) pertaining to the pancreas and duodenum.

pancreaticoduodenal veins
four veins that drain blood from the pancreas and duodenum, closely following the corresponding pancreaticoduodenal arteries. The anterior superior vein joins the right gastro-omental vein and the posterior superior vein joins the portal vein. The anterior and posterior inferior veins join, sometimes as one trunk and othe...

pancreaticoduodenostomy
(pan″kre-at″ĭ-ko-doo″o-dә-nos´tә-me) anastomosis of the pancreatic duct to a different site on the duodenum. pancreaticoenterostomy with the duct or pancreas anastomosed to the duodenum.

pancreaticoenterostomy
(pan″kre-at″ĭ-ko-en″tәr-os´tә-me) anastomosis of the pancreatic duct to the intestine.

pancreaticogastrostomy
(pan″kre-at″ĭ-ko-gas-tros´tә-me) anastomosis of the pancreatic duct to the stomach.

pancreaticohepatic syndrome
Zieve syndrome.