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P
- pachy-
- in botany,
thick
- PAF antagonist
- platelet activating
factor inhibitor. PAF activates platelets to secrete
serotonin and other mediators to cause smooth-muscle
contraction and vascular permeability, involved in asthma; a
PAF antagonist counters these effects
- pancreatitis
- inflammation of the
pancreas
- papaverine-like
- mildly analgesic,
powerfully antispasmodic
- paracrine
- hormonal response from
cell to cell near a secretory site
- parametritis
- inflammation of the
tissues adjacent to the uterus
- parasympathetic
nervous system
- portion of the
autonomic nervous system that is generally associated with
increasing digestion and intestinal muscle activity;
decreasing blood circulation and respiration
- parasympatholytic
- agent, such as
atropine, that annuls or antagonizes the effects of the
parasympathetic nervous system
- parasympathomimetic
- drugs or chemicals
having an action resembling that caused by stimulation of
the parasympathetic nervous system, e.g.,
acetylcholine
- parenteral
administration
- administration by means
other than the digestive tract, such as intravenous,
subcutaneous, intramuscular, or intramedullary
injection
- paresthesia
- abnormal sensation,
such as burning or prickling
- parvi-
- in botany,
small
- pericarditis
sicca
- fibrinous inflammation
of the external surface of the heart and its surrounding
membrane without the accumulation of fluid
- periodontitis
- inflammation of the
area around a tooth
- periostitis
- inflammation of the
thick fibrous membrane surrounding a bone
- peristalsis
- movement characterized
by alternate circular contraction and relaxation of the
intestine or other tubular structure which propels the
contents onward
- peritoneum
- serous sac lining the
abdominal cavity and covering most of the organs inside
it
- phaeo-
- in botany,
dark
- phagocytosis
- process of ingestion
and digestion by cells of solid substances such as other
cells, bacteria, dead tissue, and foreign
particles
- phanero-
- in botany, easily
seen
- pharmacokinetics
- the study of the
absorption, distribution, metabolism and excretion of drugs
and other substances in living organisms
- pharyngeal
- related to the upper
expanded portion of the digestive tube, between the
esophagus below and the mouth and nasal cavities above and
in front
- pheochromocytoma
- encapsulated tumor of
the adrenal gland secreting epinephrine and
norepinephrine
- phlebectasia
- dilation of the
veins
- phlebitis
- inflammation of a
vein
- phospholipid
- a phosphorus-containing
lipid; an important constituent of cell
membranes
- photosensitization
- process of increasing
sensitivity to sunlight
- picro-
- in botany,
bitter
- podo-
- in botany, of a
foot
- polydipsia
- chronic excessive
thirst
- portal
circulation
- circulation in which
the outflow from one organ goes directly to a second organ,
most commonly used to refer to the venous circulation of the
intestine which goes to the liver
- poultice
- soft mass prepared by
moistening botanicals or other absorbent substances with oil
or water, usually applied hot to the skin
- proctitis
- inflammation of the
mucous membranes of the rectum
- prodrug
- a drug whose actions
result from its conversion by metabolic processes within the
body
- prolactin
- an anterior pituitary
peptide hormone that initiates and maintains
lactation
- prostaglandin
- any of a class of
physiologically active substances present in many tissues,
with effects such as vasodilation, vasoconstriction,
stimulation of the smooth muscles of the bronchus or
intestine, uterine stimulation; also involved in pain,
inflammation, fever, allergic diarrhea, and
dysmennorhea
- prostatectomy
- removal of the prostate
gland
- prothrombin
- protein needed for
clotting of the blood
- pruritis ani
- anal
itching
- pruritus
- itching
- pseudomelanosis
coli
- changes in the
pigmentation of the colon
- psoriasis
- inherited condition
characterized by the eruption of reddish, scaled papules on
the skin of the elbows, knees, scalp, and
trunk
- psychoanaleptic
drugs
- central nervous system
stimulants that reverse depression
- psychogenic
- of a psychological
origin
- ptycho-
- in botany, pertaining
to grooves or folds
- pulmonary edema
- accumulation of fluid
in the lung
- pungent
principles
- essential oils
imparting odor
- purpura
- bleeding into the
tissues directly beneath skin or mucous
membranes
- pustule
- small elevation of the
skin containing pus
- pyelonephritis
- inflammation of the
renal pelvis
- pylorospasm
- abnormal contraction of
the lower sphincter of the stomach
- pyretic
- fever-inducing
agent
- pyro-
- in botany,
fiery
- pyrrho-
- in botany, fire red,
ruby red
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