The Following Are the Steps Involved in Transmission at a Cholinergic

question 37

Multiple Choice

The following are the steps involved in transmission at a cholinergic synapse. 1.Chemically-gated sodium channels on the postsynaptic membrane are activated.
2) Calcium ions enter the synaptic terminal.
3) Acetylcholinesterase hydrolyzes acetylcholine.
4) An action potential depolarizes the synaptic terminal at the presynaptic membrane.
5) The synaptic terminal reabsorbs choline.
6) Acetylcholine is released from storage vesicles by exocytosis.
7) Acetylcholine binds to receptors on the postsynaptic membrane.
8) Calcium ions are removed from the cytoplasm of the synaptic terminal.
The correct sequence for these events is

• A)4,2,6,7,8,5,3,1.
• B)4,2,6,7,1,8,3,5.
• C)2,4,6,7,1,8,3,5.
• D)2,5,4,6,7,1,8,3.
• E)6,4,2,7,1,8,3,5.

---

Definitions:

Nervous System

A sophisticated system of neurons and synaptic connections that conveys neural signals throughout the body.

Complexity

A measure of the number of components in a system and the number of interrelationships among those components.

Organisms

Living beings, ranging from microscopic entities like bacteria to complex structures like humans and plants.

Homo Floresiensis

Homo floresiensis is an extinct species of small-statured humans that lived approximately 100,000 to 50,000 years ago, discovered on the Indonesian island of Flores.