Author Question: Because neurotransmitters are responsible for immediately transmitting impulses between nerve cells, ... (Read 78 times)

pragya sharda · **on:** Jul 19, 2018

Because neurotransmitters are responsible for immediately transmitting impulses between nerve cells, they are known as which of the following?

A) First messengers
B) Second messengers
C) Receptors
D) Synapses

Question 2

The structure and function of a neuron form the basis for the overall function of the nervous system. What are the components of a neuron?

A) A glial cell, nucleus, organelles, dendrites, and axons
B) A glial cell, nucleus, dendrites, and synapses
C) A cell body, nucleus, organelles, dendrites, and axons
D) A cell body, nucleus, axon, and synapses

yeungji · **Reply #1 on:** Jul 19, 2018

Answer to Question 1

Ans: A
Feedback:
Neurotransmitters are referred to as first messengers, which denotes that they are molecules that communicate information or change from one cell or cell group to another, cause an immediate effect, and are typically found in circuitry that produces behavior. A second messenger is a substance manufactured from the coupling of a first messenger to a receptor. Neurotransmitters can initiate the action of second messengers but neurotransmitter themselves are not second messengers.

Answer to Question 2

Ans: C
Feedback:
Each neuron consists of a cell body with a nucleus, other organelles, and snakelike extensions called dendrites and axons that funnel information in and out. Between each neuron are spaces called synapses, which serve as points of cellular contact. Glial cells and synapses are not components of a neuron.