A test organism develops a genetic mutation that causes neurons to develop without synaptic knobs. How will this impact neuronal function?
A. The dendrites of the postsynaptic neurons will have no means to attach to presynaptic axons.
B. No neurotransmitters will be released into the synapse to signal the postsynaptic neuron, as the synaptic knob is where they are stored.
C. Signal transduction down the axon will be interrupted, so the signal will not "jump" the synapse and reach the postsynaptic neuron.
D. Action potentials will not travel down the axon nearly as rapidly.
Answer: B
You might also like to view...
A cleft palate is an example of which of the following?
A. Congenital disorder B. Degenerative disorder C. Infection D. Nutritional disorder
When a graded potential arrives at the axon hillock before an earlier graded potential has died out, the two potentials can be added in a process known as __________ __________
Fill in the blank with correct words.
Comparing the small and large intestines, which of the following is not true?
A. The small intestine has more surface area. B. Intestinal crypts are only in the small intestine. C. The large intestine has more goblet cells. D. The large intestine is shorter in length.
Which layer of the epidermis protects from abrasion and is found only in thick skin?
A. Hypodermis B. Stratum lucidum C. Stratum corneum D. Stratum basale