receives blood from the head and arms and chest and empties into the right atrium of the heart
posterior labial veins
Noun
veins that pass posterior from the labia majora to the internal pudendal vein
prostaglandin
Noun
a potent substance that acts like a hormone and is found in many bodily tissues (and especially in semen)
perspiration
Noun
salty fluid secreted by sweat glands
perspiration
Noun
the process of the sweat glands of the skin secreting a salty fluid
peritoneum
Noun
a transparent membrane that lines the abdominal cavity in mammals and covers most of the viscera
peritoneal cavity
Noun
the interior of the peritoneum
pancreatic juice
Noun
a fluid secreted into the duodenum by the pancreas
pericardium
Noun
a serous membrane with two layers that surrounds the heart
parietal pericardium
Noun
the tough outermost layer of the pericardium that is attached to the diaphragm and the sternum
pericardial cavity
Noun
the space between the layers of the pericardium that contains fluid that lubricates the membrane surfaces and allows easy heart movement
pericardial space
Noun
the space between the layers of the pericardium that contains fluid that lubricates the membrane surfaces and allows easy heart movement
pus
Noun
a fluid product of inflammation
purulence
Noun
a fluid product of inflammation
purulence
Noun
symptom of being purulent (containing or forming pus)
polygene
Noun
a gene that by itself has little effect on the phenotype but which can act together with others to produce observable variations
proto-oncogene
Noun
a normal gene that has the potential to become an oncogene
patent ductus arteriosus
Noun
a ductus arteriosus that failed to close at birth
protoplast
Noun
a biological unit consisting of a nucleus and the body of cytoplasm with which it interacts
papilla
Noun
a small projection of tissue at the base of a hair or tooth or feather
papilla
Noun
a small nipple-shaped protuberance concerned with taste, touch, or smell
papilla
Noun
(botany) a tiny outgrowth on the surface of a petal or leaf
plasma cell
Noun
a cell that develops from a B lymphocyte in reaction to a specific antigen
plasmacyte
Noun
a cell that develops from a B lymphocyte in reaction to a specific antigen
plasmablast
Noun
the precursor of a plasma cell
parafovea
Noun
area of the retina immediately surrounding the fovea
peduncle
Noun
a bundle of myelinated neurons joining different parts of the brain
peduncle
Noun
stalk bearing an inflorescence or solitary flower
peduncle
Noun
the thin process of tissue that attaches a polyp to the body
pyriform area
Noun
pear-shaped neural structure on either side of the brain in the rhinencephalon
piriform area
Noun
pear-shaped neural structure on either side of the brain in the rhinencephalon
pyriform lobe
Noun
pear-shaped neural structure on either side of the brain in the rhinencephalon
piriform lobe
Noun
pear-shaped neural structure on either side of the brain in the rhinencephalon
protoplasmic astrocyte
Noun
a kind of astrocyte found in the grey matter
polar body
Noun
a small cell containing little cytoplasm that is produced along with the oocyte and later discarded
proprioceptor
Noun
special nerve endings in the muscles and tendons and other organs that respond to stimuli regarding the position and movement of the body
packed cells
Noun
a preparation of blood cells separated from the liquid plasma
phagocyte
Noun
a cell that engulfs and digests debris and invading microorganisms
processus coronoideus
Noun
a sharp triangular process projecting from a bone
pit of the stomach
Noun
a slight depression in the midline just below the sternum (where a blow can affect the solar plexus)
pneumogastric nerve
Noun
a mixed nerve that supplies the pharynx and larynx and lungs and heart and esophagus and stomach and most of the abdominal viscera
parietal gyrus
Noun
any of the convolutions of the outer surface of the parietal lobe of the cerebrum
pons
Noun
a band of nerve fibers linking the medulla oblongata and the cerebellum with the midbrain
pons Varolii
Noun
a band of nerve fibers linking the medulla oblongata and the cerebellum with the midbrain
paleocortex
Noun
the olfactory cortex of the cerebrum
paleencephalon
Noun
the more primitive parts of the brain phylogenetically
paleoencephalon
Noun
the more primitive parts of the brain phylogenetically
palaeencephalon
Noun
the more primitive parts of the brain phylogenetically
pyramidal tract
Noun
any of the important motor nerves on each side of the central nervous system that run from the sensorimotor areas of the cortex through the brainstem to motor neurons of the cranial nerve nuclei and the ventral root of the spinal cord
pyramidal motor system
Noun
any of the important motor nerves on each side of the central nervous system that run from the sensorimotor areas of the cortex through the brainstem to motor neurons of the cranial nerve nuclei and the ventral root of the spinal cord