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Pressure in Biological Dictionary

Turgor

... Turgor pressure' or turgidity is the main pressure of the cell contents against the cell wall in ... from osmotic pressure, i.e. the hydrostatic pressure produced by a solution in ... Skin turgor - ... Related terms: turgor pressure. ... Osmotic pressure is ...

Semilunar valves

... and closing depending on the difference in pressure on each side. They are mechanically similar to ... valve opens in ventricular systole, when the pressure in the right ventricle rises above the pressure in the pulmonary artery. At the end of ...

Pacinian corpuscles

... in the skin, responsible for sensitivity to deep pressure touch and high frequency vibration. A ... a sensory receptor that responds to mechanical pressure or distortion. There are four main types in the ... found in the skin of the fingers ... Deep pressure is perceived mainly by the Pacinian corpuscles ...

Degeneracy

... density that the dominant contribution to its pressure rises from the Pauli exclusion principle. The pressure maintained by a body of degenerate matter is ... if/ degeneracy / Site Search: ... ... pressure is known as electron degeneracy ...

Arterial system

... portion of the circulatory system . ... blood pressure n. ( Abbr. BP ) The pressure exerted by the blood against the walls of the blood ... pressure in the arterial system which is referred to .....

Osmoregulation

... Osmoregulation is the active regulation of the osmotic pressure of an organism's fluids to maintain the homeostasis of the ... by ... osmoregulation n. Maintenance of an optimal, constant osmotic pressure in the body of a living organism ... Blood sugar · Osmoregulation · ...

Norepinephrine

... or any ... Norepinephrine is effective at increasing arterial blood pressure through ... Accurate, FDA approved Norepinephrine information for ... or any ... Norepinephrine is effective at increasing arterial blood pressure through ... Norepinephrine summary with 11 pages of encyclopedia ...

Intercostal muscles

... aid in both inspiration and expiration, which require changes in the pressure within the thoracic cavity. The respiratory muscles work to achieve this ... inward movement of the muscles between the ribs as a result of reduced pressure in the chest ... Intercostal muscle information including symptoms, ...

Exergonic reaction

... 2 pages of encyclopedia entries, essays, summaries, research ... constant pressure an exergonic reaction is signified ... At constant temperature, constant pressure an exergonic reaction is signified by ... Exergonic reactions are ...

Xylem

... Xylem Vanities. Find NexTag Sellers' Lowest Price! Discover Great Deals at NexTag.com. Find Our Lowest Price and Save! This may cause a positive pressure that will force sap up the xylem towards the leaves. ... in secondary xylem , laid down by a meristem called the vascular cambium ... ...

Venous system

... elements: ... The venous system acts as a collecting system , returning blood from the capillary networks to the heart passively down a pressure gradient Chronic Venous InsufficiencyWhat is chronic venous insufficiency? ... University of Virginia Health System . Skip Navigation. Health ...

Vacuole

... research information, and more. ... The term vacuole in biology refers to a membrane ... The vacuole is used only in plant cells. ... The pressure applied by the vacuole , called turgor, is necessary to maintain the ... A vacuole is a membrane organelle which is present in all plant ...

Siphon

... ... Inverted siphon (depressed sewer) design software and equations, formulas ... Unlike the main sewer pipe, the siphon pipes flow under pressure and must have ... Definition of siphon from the Merriam-Webster Online Dictionary with audio pronunciations, thesaurus, Word of the Day, and ...

Shell membrane

... Harbin ROPV Industry Development Center began to research in 1984 with a single vision: to become a global FRP pressure ... Membrane Shell . Membrane Shell ... Product information for Membrane Shell from Harbin ROPV Industry Development Center. ... ...

Sciatic nerve

... nerve runs beneath the piriformis muscle. ... Sciatica refers to pain or discomfort associated with the sciatic nerve . ... Injury to or pressure on the sciatic nerve can cause the characteristic pain of ... sciatic nerve n. A sensory and motor nerve originating in the sacral ...

Pulmonary artery

... have been reported, Gupte et al ... Pulmonary artery catheterization is a diagnostic procedure in which a small ... high pulmonary artery pressure may ... " Pulmonary Artery Catheterization. ... Britannica online encyclopedia article on pulmonary artery (anatomy), ... draining ...

Proglottid

... up of mature and gravid proglottid . ... recognize both the proglottid and the eggs expressed from it in order to diagnose the infection. ... pressure and crush the proglottid between the two slides ... The following video shows a live proglottid of Taenia pisiformis. ... By contacting and ...

Polygenic disorders

... disorders . Prostate conditions. Penile ... Polygenic disorders are more difficult to manage than simple one-gene disorders . For selective pressure against polygenic disorders , they have to be considered ... Polygenic disorders have been more difficult for breeders to manage. ... In ...

Plasmolysis

... thesaurus, Word of the Day, and word games. Plasmolysis is an effect of osmosis in plants. ... Further water loss causes plasmolysis : pressure decreases to the point where the ... Plasmolysis is the contraction of a cell due to the loss of water through ... Plasmolysis is water ...

Pinna

... Fixture Universe today. Your source for 2004 - Pinna Finial. When present, the pinna will be very thick. ... The pinna is bandaged so that pressure is applied to it to prevent recollection of fluid. ... Pinna abnormalities and low-set ears - Overview, Pinna abnormalities and low-set ... ...

Phloem

... , the sieve elements, are ... phloem ... Phloem - Wikipedia, the free encyclopedia ... Girdling removes the phloem but not the xylem. ... pressure of the contents of the phloem decreases. ... Transport of Messenger RNA (mRNA) through the Phloem ... the phloem fibres give the plant ...

Osmosis

... The simplest definition is that it is diffusion ... Reverse osmosis is a filtration process that is often used for water. It works by using pressure to force a solution through a membrane, retaining the solute on one side and allowing the pure solvent to pass to the ... OSMOSIS . When ...

Organ

... by sustained tone ... Organ A wind instrument consisting of one or more scale-like rows of individual pipes which are made to sound by air under pressure admitted to the organ n. Music. An instrument consisting of a number of pipes that sound tones when supplied with air and a keyboard that ...

Optic nerve

... to its pathways to the brain results in loss ... A stroke of the optic nerve is caused by ischemia or poor circulation to the ... intraocular pressure may improve the blood flow to and through the optic nerve . ... Online Medical Dictionary and glossary with medical definitions ... Using an ...

Nerve roots

... cord that carry signals to the rest ... of the dermatomal distribution of the nerve roots . ... ... performed on the lower spine to relieve pressure on one or more nerve roots . ... The disc is visualized underneath the nerve root . ... Transforaminal Nerve Root Stimulation: This ...

Melting temperature

... which melt at ... melting point n. ( Abbr. mp ) The temperature at which a solid becomes a liquid at standard atmospheric pressure ... occurs over a range of temperatures , and a ... melting temperature ( ′meltiŋ ′temprəchər ) ( biochemistry ) The temperature at which ...

Membranes

... PARTS AND ACCESSORIES. IN LINE FILTERS. We proudly accept: ... ... Osmosis Membranes in North ... Itself " Reverse Osmosis Membranes and pressure Vessels ... Car Wash Membranes . Maple Sugar Membranes & Adaptors. Links to ... Features a collection of diagrams illustrating their ...

Left ventricle

... from birth. The aortic valve lets blood flow from the heart's left ventricle into the aorta. ... Instead, it helps to lessen the stenosis and pressure in the left ventricle . ... The left ventricle is the largest chamber of the heart, with about 3 times more ... The left ventricle also ...

Lag phase

... lag phase ? Meaning of lag phase medical term. What does lag phase mean? ... phase ... mN/m first showed a lag phase with a very slow pressure increase ... Yeast Lag Phase FAQ ... I have never had lag time more than 48 hours, even when pitching ... you don't know that the lag ...

Keratin

... Rubbing and pressure cause keratin to proliferate with the ... Fibrous keratin molecules can twist around each other to form helical intermediate filaments. ... ...

Hydrostatic skeleton

... structure found in many cold-blooded organisms and soft-bodied animals consisting of a fluid-filled cavity, the coelom, surrounded by muscles. The pressure of the fluid and action of the surrounding muscles are used to change an organism's shape and produce movement, such as burrowing or swimming. ...

Hereditary Unit

... unit : codon. ... A unit : photon. A basic hereditary unit : codon. –on. suff. Inert ... Hereditary Motor Neuropathy With Liability to pressure Palsies (HNPP) Back to Top ... Hereditary neuropathies are classified as sensorimotor, sensory, or motor (see ... Peripheral Nervous System and ...

Guard cell

... bright fluorescence (Figure ... Guard cells regulate stomatal pore size to allow CO2 uptake while ... The changes in guard cell turgor pressure and volume caused by these processes ... Guard cell movement is induced by environmental and hormonal signals that cause ... how most of these ...

Flame cell

... Card Required. Effective flame retardant sprays, paints and caulking which coats wood, paper, fabric, etc. ... Open and Closed Cell Foam. pressure Treated Wood ... Shop for F63-0485 Flame Detector Cell and Humidifiers at Shop.com. CAD CELL Small Appliances|Humidifiers|White Rodgers ...

Esophagus

... the lining of the esophagus (the tube that carries food from the throat to the stomach) is damaged by ... Esophagus tests measure muscle pressure and movement, coordination, and strength of the esophagus , a tube which connects the throat to the stomach. Barrett's esophagus — ...

Eardrum

... drum skin into the middle ... More about Perforated Eardrum : Causes and symptoms Diagnosis Treatment Prognosis ... middle ear tumor, which puts pressure against the inner ear drum ... eardrum ( ) n. The thin, semitransparent, oval-shaped membrane ... eardrum . Dictionary: ear·drum (îr'drŭm') ...

Dysgenic

... or see dysgenic on Thesaurus ... Dysgenics summary with 6 pages of encyclopedia entries, essays, ... Dysgenic refers to a counter selection pressure reproduction frequency within a population. ... Pronunciation of dysgenic . dysgenic synonyms. dysgenic usage examples and dysgenic ...

Dermal tissue

... A dermal punch is like a round needle - think of it as a sharp, round ... apt to develop scar tissue , and because a dermal punch reduces the pressure that ... Solid tissue sections can be analyzed for tumor-specific antigens or other ... thick section of formalin-fixed dermal tissue was ...

Dehiscent

... has Two Carpels & Two Lines of Dehiscence. ... Each of these produces a dry dehiscent fruit which splits along one side. ... ... by sound or pressure secondary to a dehiscent superior semicircular canal. ... The dehiscent middle fossa: prevalence, manifestations, associated findings and ... ...

Concentration gradient

... concentration gradient n. The graduated difference in concentration of a solute per unit distance through a ... pressure gradient in concentration and dilution ... concentration gradient ( ′känsən′trāshən ′grādēənt ) ( chemistry ) The graded difference in the ...
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