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Physiology Stack 2

QuestionAnswer
What is peristalsis? Wavelike ripple of muscle layer of hollow organ; progressive motility that produces forward movement of matter along the GI tract.
When does air move into the lungs? When alveolar pressure (PA) drops below atmospheric pressure (PB).
What does adaptive immunity provide? A specific defense against specific threatening agents.
What are the primary cells of innate immunity? Epithelial barrier cells
What are the four chambers of the heart? Two atria (superior 'receiving chambers' that receive blood from veins) and two ventricles (lower 'pumping chambers' that push blood into large vessels)
Why is the atrial myocardium not very thick? Little pressure is needed to move blood such a small distance
What is the bony labyrinth? Made up of the vestibule
What is the membranous labyrinth? Made up of utricle and saccule inside vestibule
How does each spinal nerve attach to the spinal cord? By a ventral (anterior) root and a dorsal (posterior) root
What is the dorsal root ganglion? Swelling in the dorsal root of each spinal nerve
What is a polarized membrane? A membrane that exhibits a membrane potential
How is the magnitude of potential difference measured? In volts (V) or millivolts (mV); the sign indicates the charge on the inside surface of a polarized membrane
What is resting membrane potential (RMP)? Membrane potential maintained by a nonconducting neuron's plasma membrane; typically −70 mV
Created by: user-1990252
 

 



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