When multiple presynaptic neurons release neurotransmitter at various locations onto the postsynaptic neuron at the same time, this results in
A. suprathreshold hyperpolarization.
B. temporal summation.
C. spatial summation.
D. several action potentials.
C
You might also like to view...
Which of the following will inhibit the secretion of growth hormone?
A. growth hormone-releasing hormone (GHRH) B. growth hormone-inhibiting hormone (GHIH) C. somatomedins D. a posterior pituitary-inhibiting hormone E. T3 and T4
Which of the following increases with age?
A. Flexibility of the thoracic cage B. Pulmonary ventilation C. Tidal volume D. Susceptibility to infection
What might account for a soldier experiencing syncope after standing at attention for a long period of time?
A. Venous pooling B. Increased respiratory rate C. Increased heart rate D. Vasoconstriction
The organic component of the matrix in developing or repairing bone is called
A) osteon. B) osteoid. C) hydroxyapatite. D) mesenchymal tissue. E) calcium phosphate.