The relatively small size of the Purkinje fibers allows for the extremely rapid impulse conduction through the ventricles.
Answer the following statement true (T) or false (F)
False
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________ are structures that promote the upward flow of blood in leg veins by preventing backflow.
Fill in the blank(s) with the appropriate word(s).
A cell that secretes abundant proteins would have many nucleoli
Indicate whether the statement is true or false
Enhancing the excitability of a synapse so that transmission is favored along certain pathways is called ________.
A. excitotoxicity B. summation C. synaptic plasticity D. long-term potentiation
Which example fits? "A sensation is ________ , and projection of a sensation is ________."
A. a Pacinian corpuscle being stimulated to generate an action potential upon stretch stimulation; the transmission of that impulse into the brain B. a change in membrane permeability of a receptor; transmission of an impulse into a sensory area of the brain C. nociceptors sending pain signals about tissue damage from a bee sting on your finger; the brain recognizing that the pain is from your finger D. the sweet taste of ice cream on your tongue; the right side of the brain projecting the sweet taste to the left side, or vice versa