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Vanessa Mendoza

Physiology Final

QuestionAnswer
The active transport mechanism in the plasma membrane that transports sodium and potassium ions in opposite directions and at different rates is? Sodium-potassium pump
Which membrane receptor acts to directly change ion permeability when stimulated? Gated-channel receptor
Movement of the membrane potential away from zero (below the usual RMP) is called? Hyperpolarization
Both sympathetic and parasympathetic divisions are tonically active, which means they? Continually conduct impulses to autonomic effectors
The most numerous cerebral tracts are the? Commissural tracts
The production of thyroid hormone is stimulated by another hormone from the? Anterior pituitary
The sequence of auditory ossicles in the middle ear starting at the tympanic membrane and ending at the oval window is? Malleus, incus, and stapes
The bulk of the heart wall is the thick, contractile middle layer called the? Myocardium
The type of membranous tissue that lines the heart and blood vessels is the? endothelium
Which are the two baroreceptors that are located near the heart? Aortic baroreceptors and carotid baroreceptors
The functions of the lymph nodes are? Defense and hematopoiesis
The body’s defense mechanisms can be organized into one of two major categories of immune mechanisms? Innate and adaptive immunity
The tendency of the thorax and lungs to return to the preinspiration volume is called? Elastic recoil
The major form by which carbon dioxide is transported in the circulatory system is? Bicarbonate ions
The PCO2 in the atmosphere is? less than in the alveolar air
Created by: Vanessa_7
 

 



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