These are then closed with valves and the air is forced into the lungs by contraction of the throat.

These small particles or organisms gain entry when the shell valves are open for feeding or respiration.

These engines are interference engines, meaning that if this belt snaps the pistons will hit the valves, resulting in having to rebuild the engine.

These water valves are operated by handle ( grip ) | handle s.

These changes may act upon a diaphragm or a piston which in turn activates the valve, examples of this type of valve found commonly are safety valves fitted to hot water systems or boilers.

These terms don't apply to valves with no stem or valves using rotors.

These consist of two horizontal valves that tightly enclose the seeds.

These valves have also been used as a grease-free alternative to straight bored stopcocks common to Schlenk flasks.

These external openings, which act as muscular valves in some insects, lead to the internal respiratory system, a densely networked array of tubes called tracheae.

These valves aid in the digging of the hole in which an egg pod is deposited.

These features lead to low power losses due to ionization and heating and the capability to use capillary forces for feeding purposes ( i. e. no pressurised tanks nor valves are required ).

These anticoagulants are used to treat patients with deep-vein thrombosis ( DVT ), pulmonary embolism ( PE ), atrial fibrillation ( AF ), and mechanical prosthetic heart valves.

These are joined together along one edge by a flexible ligament that, in conjunction with interlocking " teeth " on each of the valves, forms the hinge.

These strong muscles connect the two valves and contract in order to close the shell.

These valves are now understood to prevent retrograde flow of blood within the veins, thus facilitating antegrade flow of blood towards the heart, though Fabricius did not understand their role at that time.

These are small valves that prevent backflow from the ventricles into the atrium during systole.

These valves permit blood to be forced into the arteries, but prevent backflow of blood from the arteries into the ventricles.

These valves do not have chordae tendineae, and are more similar to valves in veins than atrioventricular valves.

These are the first heart sound ( S < sub > 1 </ sub >) and second heart sound ( S < sub > 2 </ sub >), produced by the closing of the AV valves and semilunar valves respectively.

These stations may have one or more nozzles or valves.

These tumor suppressing proteins regulate the cell cycle, but are rendered inactive when bound to an inhibitory protein.

These pores are about 120 nm in diameter and regulate the passage of molecules between the nucleus and cytoplasm, permitting some to pass through the membrane, but not others.

These channels regulate membrane excitability, and halothane has been found to reduce neuronal firing by hyperpolarizing neurons by a current similar to TASK.

These associations regulate competition and allowed small firms to function in the shadow of much larger companies.

These can be coded for by master regulatory genes and either activate or deactivate the transcription of other genes ; in turn, these secondary gene products can regulate the expression of still other genes in a regulatory cascade.

These transcription factors have specific activator or repressor sequences of corresponding nucleotides that attach to specific promoters and regulate gene expressions.

These hormones regulate the rate of metabolism and affect the growth and rate of function of many other systems in the body.

These regulate formal nomenclature, aiming for universal and stable scientific names.

These cells affect the genetic composition of the host in order to regulate the increasing population of the endosymbionts and ensuring that these genetic changes are passed onto the offspring via vertical transmission ( heredity ).

These moral codes seek to regulate the situations which can give rise to sexual interest and to influence people's sexual activities and practices.

These attempts to regulate wages could not succeed in the long run, but in the short term they were enforced with great vigour.

These connections help regulate the hypothalamus ’ ability to secrete hormones into the body ’ s blood stream, having far-reaching and long-lasting effects on physiological processes such as metabolism.

These reductions are associated with the inability to regulate mood and impulsive behaviors, weakened signals of anxiety and fear, and decreased self-esteem.

These include things like methylation patterns in DNA and chromatin marks, both of which regulate the activity of genes.

These two peptides regulate:

These also regulate the diffusion of carbon dioxide from the atmosphere into the leaf, such that decreasing water loss ( by partially closing stomata ) also decreases carbon dioxide gain.

These signals are carried by nerve fibers through the spinal cord to the hypothalamus, where changes in the electrical activity of neurons that regulate the pituitary gland cause increased prolactin secretion.

" These principles may stipulate basic procedural rights afforded to anyone facing an adjudicative process or procedure that affects fundamental rights and freedoms, and certain substantive standards related to the rule of law that regulate the actions of the state ( e. g., the rule against unclear or vague laws ).

These boys were apprenticed to the sweep, and from 1778 until 1875 a series of laws attempted to regulate their working conditions, and many first hand accounts were documented and published in parliamentary reports.

These hormones regulate calcium concentration in the body.

These warning icons, first designed to regulate automobile traffic in the early 1900s, have become standardized and widely understood by users without necessity of further verbal explanations.

These IPSPs also regulate theta rhythms in pyramidal cells.

These would support building a treatment center and founding more programs, and the tribe could directly regulate and control the sales, as other tribes have done.

These trolls are vastly more intelligent than most trolls, as their reflective bodies allow them to ward off heat and regulate their internal temperature.