Receptors
a. may be either a specialized ending of an afferent neuron or a special cell closely associated with the peripheral ending of an afferent neuron.
b. are present for every modality in the environment.
c. when stimulated bring about opening of Na+ channels in the afferent neuron membrane adjacent to the receptor.
d. two of these answers.
e. all of these answers.
D
You might also like to view...
The ________ is the base, or floor, of the mouth
A) Labia B) Soft palate C) Tongue D) Hard palate
Through lateral inhibition, a more intensely activated receptor pathway halts transmission of impulses in surrounding, less intensely stimulated pathways
Indicate whether the statement is true or false
What enzyme joins soluble fibrinogen proteins into long molecules of fibrin during coagulation?
A) PF3 B) thrombin C) tissue factor D) prothrombin E) calcium
Inflammation
A. is an abnormal response to injury or stress. B. is a type of infection. C. is a result of exposure to very low temperatures. D. is a normal response to stress or injury.