_____ 1. The cell body of a neuron does all of the following except
- a. release neurotransmitter into the synaptic cleft
- b. produce synaptic vesicles containing neurotransmitter that are subsequently transported to the synaptic knob.
- c. conduct graded potentials to the initial segment
- d. receive graded potentials from dendrites.
Introduction:
Neuron is a basic functional unit of the nervous system and is the specialized cells of the nervous system that makes a complex network for the transmission of messages. A neuron is made up of a cell body, nerve fibers: dendrites and an axon in its structure.
Answer to Problem 1DYB
Correct answer:
The cell body of the neuron does not involve the released neurotransmitter into the synaptic cleft. Therefore, option a is correct.
Explanation of Solution
Reasons for the correct statements:
Option a. is given as “release neurotransmitter into the synaptic cleft”. Cell body does not involve in the production of neurotransmitter. The axon part of the cell body receives the graded potential which causes fusion of synaptic vesicle to the vesicle to the plasma membrane of the synaptic knob. This fusion results in the release of neurotransmitter from the synaptic vesicle. Hence, cell body does not cause the release of neurotransmitter into the synaptic cleft.
Hence, option a is correct.
Reasons for the incorrect statements:
Option b. is given as “produce synaptic vesicles containing neurotransmitter that is subsequently transported to the synaptic knob”. The cell body is involved in the synthesis of synaptic vesicles which contain neurotransmitter and these synaptic vesicles are ultimately transported to the synaptic knob through axon. Hence, option b. is incorrect.
Option c. is given as “conduct graded potentials to the initial segment”. The cell body involves the conduction of graded potential. Hence, option c. is incorrect.
Option d. is given as “receive graded potentials from dendrites”. The cell body receives the chemical potential from the dendrites. Hence, option d. is incorrect.
Hence, options b., c., and d. are incorrect.
The release of neurotransmitter into the synaptic cleft is not the function of the cell body.
Want to see more full solutions like this?
Chapter 12 Solutions
Anatomy & Physiology
Additional Science Textbook Solutions
Campbell Biology (11th Edition)
Concepts of Genetics (12th Edition)
Microbiology: An Introduction
Campbell Biology: Concepts & Connections (9th Edition)
Laboratory Experiments in Microbiology (12th Edition) (What's New in Microbiology)
- Any change in a neuron's membrane potential that moves the membrane potential to a value more negative than the resting potential (e.g. -120mv) is: a. Hypopolarization b. Depolarization c. An action potential d. HyperpolarizationNOTE: A IS INCORRECTarrow_forwardAnswer the following questions in regards to voltage-gated channels in the neuron: a. What is the stimulus that opens/closes these channels? b. Where on the neuron will you find these channels?arrow_forwardMatch the description with the statement that best describes the following neural circuits. a single post-synaptic neuron receives input from multiple pre- synaptic neurons causes the stimulation of the post-synaptic neuron continually similar to a positive feedback response A. diverging circuits B. converging circuits C. reverberating circuits causes a longer lasting stimulus of the post-synaptic neuron D. parallel after discharge circuits a single pre-synaptic neuron synapses with multiple post-synaptic neurons Moving to another question will save this response. Photos A39 DEC 3 17 étvarrow_forward
- On what part of the neuron are NT receptors typically located? If the activated NT receptors cause channels to open or change thus changing the diffusion of ions, what type of potential will this initially produce? A.Resting B.Graded C.Action D.Homeostaticarrow_forwardMatch the description with the statement that best describes the following regions dendrites A. elongated projection that conducts electrical signals over long distances B. receives input from other neurons axon hillock C. "region of high denisty of voltage-gated channels, known as the trigger zone" ахon D. contains numerous vesicles containing neurotransmitter synaptic knobarrow_forward8. a) Label the following diagram of a synapse with the following terms: axon terminal, synaptic cleft, synaptic vesicles, pre-synaptic membrane, post-synaptic membrane. A SYNAPSE Mitochondrion produce ATP Dendrite of second neuronarrow_forward
- V6arrow_forwardWhere is the action potential generated initiated in the neuron? Select one: a. Nucleus of the neuron. b. Dendritic terminals. c. Post-synaptic gap. d. Axon hillock.arrow_forwardWhich of the following statements does NOT correctly describe the repolarization of a neuron? a. The potassium channels are slower to open, allowing the potassium ions to leave after depolarization. b. The potassium ions leave the cell, thereby returning the neuron to its resting potential. c. The neuron becomes more polarized and more negatively charged than its original resting membrane potential. d. The sodium and potassium channels open, allowing the positive ions to move out of the cell.arrow_forward
- Label the structures in the following diagram of a neuron.arrow_forwardWhich of the following insulates and protects a neuron’s axon, as well as helps speed along electrical impulses? a. synaptic knobs c. myelin sheath b. receptor sites d. neuromodulatorsarrow_forwardImagine a neuron receiving twice the number of inhibitory postsynpatic potentials as excitatory postsynpatic potentials. Calcium levels inside the axon terminus of this neuron would be Select one: a. Low b. Higharrow_forward
- Concepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax College