Neuron X makes inhibitory axon-axonal synaptic contact with neuron Y at the synapse of Y and neuron Z. Which will occur when action potentials are stimulated in neuron X?
A. The synapse between neurons Y and Z will be changed from an excitatory synapse to an inhibitory one.
B. Neuron Y will be inhibited from reaching the threshold to fire an action potential.
C. Neurons Y and Z will both be less likely to reach threshold and fire an action potential.
D. The release of neurotransmitter by neuron Y will be inhibited.
E. Neurons Y and Z will both be more likely to reach threshold and fire an action potential.
Answer: D
You might also like to view...
You are viewing a gland at 100× total magnification and the microscope at that magnification has a field diameter of 5 mm. The gland's width takes up one-quarter of the view. What is the size of the gland in mm?
A) 10 mm B) 1.25 mm C) 20 mm D) 0.8 mm
In what way does blood assist in immune function?
A) Platelets allow clotting. B) Red blood cells transport gases. C) White blood cells defend against pathogens. D) Albumins transport hormones. E) Plasma antibodies and white blood cells defend against pathogens.
The two major body cavities are ________ and ________
A) abdominopelvic; thoracic B) ventral; dorsal C) cranial; dorsal D) thoracic; ventral
The sex of a child is determined by the
A. sperm. B. egg. C. either sperm or egg.