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Samantha Hix
Physiology
| Question | Answer |
|---|---|
| The brief period during which a local area of an axons membrane resists re-stimulation is called | refractory |
| if the magnitude of the local depolarization surpasses a limit called the ____, voltage gated Na+ channels open | threshold potential |
| which membrane receptor acts to directly change ion permeability when stimulated? | gated channel receptor |
| the membrane potential mainitained by non conducting neurons plasma membrane is called the ____ membrane potential | resting |
| two types of synapses- | electrical and chemical |
| fastest nerve fibers in the body can conduct impulses up to approximately ____ per second | 130 |
| the nuerotransmitter that inhibits the conduction of pain impulses are | enkephalins |
| true of action potential | the outside of the plasma membrane is negatively charged and the inside is positely charged |
| main chemical classes of nuerotransmitters | amines,amino acids, and nueropeptides |
| the largest part of the brain | cerebellum |
| the reticular activating system maintains | consciousness |
| the limbic system integrates | emotion |
| another name for the parasympathetid nervous system is the ____ nervouse system | craniosacral |
| what cranial nerve is responsible for the sense of smell | olfactory |
| tongue movement is controlled by which cranial nerve | hypoglossal |
| most numerous cerebral tracts are the | association tracts |
| the part of the brain that can directly influence or inhibit the release of hormones from the pituitary is the | hypothalamus |
| damage to the ___ nerve could make the diaphragm unable to function | phrenic |
| parasympathetic have no effect on any of the following except | (sweat glands) |
| accommodation for near vision neccesities | an increase in the curvature of the lens, constriction of the pupils, convergence of the two eyes |
| the immediate effect of a steroid hormone on a cell is the | transcription of RNA |
| clear and potassium rich fluid that fills the labyrinth is | endolymph |
| what is used to determine the volume percentage of red blood cells in whole blood? | Hemocrit |
| what is heparin | a natural constituent of blood, acts as an anti thrombin and prevents blood clots |
| the molecule that makes up 95% of dry weight of each red blood cell and is responsible for the red pigment | hemoglobin |
| the normal ECG is not composed of what | E wave |
| The four structures that compose the conduction system of the heart are the | SA node, AV node, AV bundle, and Purkinje |
| A few ateries open into other branches of the same or other arteries this is called ______ | arterial anastomosis |
| the internal iliac artery supplies blood to the | pelvis |
| renal veins drain blood from where | kidneys |
| what is a sphygmomanometer | an apparatus used to measure blood pressure |
| platelets play an important role in | blood clotting |
| the vagus is said to act as a brake on the heart this is called | vagal inhibition |
| the chemoreceptors in the carotid bodies are particularly sensitive to | hypercapnia |
| the movement of phagocytes from blood vessels to an inflammation site is called | diapedesis |
| what protein interferes with the ability of viruses to cause disease | inteferon |
| memory cells | become plasma cells when exposed to an antigen |
| the lymph pressure gradient is established by | breathing movements and skeletal muscle contractions |
| the mechanism that produces pulmonary ventilitation is one that establishes a gas pressure gradient between the | atomosphere and the alveolar air |
| hypernea means | increase in breathing |
| in what form does oxygen travel in blood | disolved oxygen in the plasma, and associated with hemoglobin |
| an increase of carbon monoxide in the blood causes | a drop in pH in the blood |
| what is known as the bohr effect | a right shift of the oxygen-hemoglobin dissociation curve due to increased partial pressure of carbon dioxide |
| boyle's law states ______ | the volume of a has is inversely proportional to its pressure |
| what is tidal volume | the volume of air exhaled after a typical inspiration |
| standard atmospheric pressure is ____mm Hg | 760 |
| external respiration can be defined as | the exchange of hases btween the lung and the blood capillaries in the lung, and pulmonary ventilation |
| what constitutes total lung volume? | residual volume and vital capacity |
| chemical digestion requires the secretion of _____ into lumen of the GI tract | digestive enzymes and bile |
| Peristalsis is regulated in part of the intrinsic stretch reflexes. It is also thought to be stimulated by the hormone | CCK-Cholecystokinin |
| The chemical process in which a compound unites with water and then splits into simpler compouns is called | hydrolysis |
| The process of deglutition includes all of the following except the stage | laryngeal |
| the enzyme pepsin begins the digestion of | protein |
| the hormone that inhibits gastric muscle,slowing passage of food into the duodenum is called | enterohastrone |
| an end product of fat digestion is | glycerol |
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copegirl
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