Sodium channels are concentrated in the
A) axon hillock and nodes of Ranvier.
B) dendrites and synaptic boutons.
C) dendrites and nodes of Ranvier.
D) dendrites and axon hillock.
E) synaptic boutons and axon hillock.
Answer: A
You might also like to view...
A person takes a medication that blocks their neurons' ability to be stimulated by a specific chemical
signal. What part of the neuron is most likely being affected by the medication?
a. axon terminals b. the axon c. dendrites d. the cell body e. nucleus
Why is the evolutionary origin of all eukaryotes no longer considered to be a simple evolution from a single Archaea species?
a. Archaea contain insufficient genetic material to explain eukaryotic evolution. b. Fossil records provide evidence that Archaea evolved after eukaryotes. c. Some eukaryotic genes share more similarity with Bacteria than Archaea. d. Some eukaryotes contain mitochondria, which are invariably fatal to Archaea.
How is blood flow in the placenta maintained so that there is maximum opportunity for the exchange of materials while still keeping the blood of the mother and the baby separate?
What will be an ideal response?
The gastrointestinal tract has both a long tube that nutrients traverse from mouth to anus and accessory organs that aid in food digestion. From the following list of organs in the digestive system, identify the mismatch.
A. Salivary glands; accessory organ B. Pharynx; part of the digestive tube C. Rectum; part of the digestive tube D. Liver; part of the digestive tube E. Appendix; accessory organ