The mechanisms that produce and maintain the resting membrane potential do so by producing a

slight excess of positive ions on the outer surface of the plasma membrane.

Axon terminals of autonomic neurons release either of two neurotransmitters,

norepinephrine and acetylcholine.

In a healthy adult, a well-placed tap on the knee will result in a:

stretch of the tendon, the quadriceps femoris, and thereby stimulation of the muscle spindles.

The last step in the nonsteroid hormone mechanism of action is:

protein kinases activate other enzymes.

The presentation of an antigen by an antigen-presenting cell activates the T cell. The cell then divides repeatedly to form a clone of identical sensitized T cells that form

effector T cells and memory cells.

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Week 7-13

Question	Answer
A term commonly used as a synonym for action potential is	nerve impulse
Which membrane receptor acts to directly change ion permeability when stimulated?	Gated-channel receptor
When neurotransmitters from synaptic knobs stimulate a postsynaptic neuron in rapid succession, their effect can add up over a brief period to produce an action potential. This is called	temporal summation.
Movement of the membrane potential away from zero (below the usual RMP) is called	hyperpolarization.
The mechanisms that produce and maintain the resting membrane potential do so by producing a	slight excess of positive ions on the outer surface of the plasma membrane.
Dopamine, epinephrine, and norepinephrine are classified as:	catecholamines.
Axon terminals of autonomic neurons release either of two neurotransmitters,	norepinephrine and acetylcholine.
The action of acetylcholine is quickly terminated by its being hydrolyzed by the enzyme	acetylcholinesterase.
The set of coordinated commands that control the programmed muscle activity mediated by extrapyramidal pathways is called the	motor program.
In a healthy adult, a well-placed tap on the knee will result in a:	stretch of the tendon, the quadriceps femoris, and thereby stimulation of the muscle spindles.
The last step in the nonsteroid hormone mechanism of action is:	protein kinases activate other enzymes.
The production of thyroid hormone is stimulated by another hormone from the:	anterior pituitary.
The olfactory tract carries impulses associated with:	smell.
Platelets play an important role in	blood clotting.
The type of membranous tissue that lines the heart and blood vessels is the	endothelium.
Activities that result in central movement or flow of lymph are called	lymphokinetic activities.
The presentation of an antigen by an antigen-presenting cell activates the T cell. The cell then divides repeatedly to form a clone of identical sensitized T cells that form	effector T cells and memory cells.

Created by: lesquivel

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