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Week 14: Assignment

Week 14: Assignment - StudyStack Set 2

QuestionAnswer
An ion channel that opens in response to a sensory stimulus is a(n) stimulus-gated channel.
What mechanism quickly terminates the action of a neurotransmitter once it binds to its postsynaptic receptor? Neurotransmitter molecules are transported back into synaptic knobs. Neurotransmitter molecules are metabolized into inactive compounds. Neurotransmitter molecules are transported into nearby glial cells. All of these are correct.
In a myelinated fiber, the action potential jumps from one node of Ranvier to the next. True
The sodium-potassium pump actively pumps three potassium ions out of the neuron and two sodium ions into the neuron. Correct! False
The tiny bulge at the end of a terminal branch of a presynaptic neuron’s axon is called a(n) synaptic knob
There are two types of synapses—the electrical synapse and the __________ synapse. chemical
The action potential seems to “leap” from node to node along a myelinated fiber. This type of impulse regeneration is called __________ conduction. saltatory
The chemical process in which a compound unites with water and then splits into simpler compounds is called hydrolysis.
The act of expelling feces is called defecation.
Pepsinogen is converted to pepsin by hydrochloric acid, which is produced by the _____ of the gastric glands. Correct! parietal cells
The process of deglutition includes all of the following except the _____ stage. laryngeal
External respiration can be defined as: the exchange of gases between the lung and the blood capillaries in the lung. pulmonary ventilation. the exchange of gases between the blood capillaries and the tissue cells. Correct Answer both A and B.
The ejection of bile from the gallbladder is controlled by which hormones? CCK and secretin
Created by: jakkfamily
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