Misc

Question 1

a. What is an example of a neurotransmitter (NT) like this that is used in both
the sympathetic and parasympathetic nervous systems?

Answer 1

Acetylcholine (ACh)

Question 2

b. What is the general name for this NT’s receptors?

Answer 2

Cholinergic Receptors

Question 3

c. At what location is this NT used in both the sympathetic and
parasympathetic nervous systems?

Answer 3

In the ganglia

Question 4

d. What is the specific name for this NT’s receptors in this location?

Answer 4

Nicotinic receptors

Question 5

e. In what other location are Nicotinic receptors found?

Answer 5

Nicotinic receptors are also found in skeletal muscle (since acetylcholine is used to cause
skeletal muscle contraction). In this location these receptors are part of the Somatic
Nervous System (or Somatic Division), the nerves that cause skeletal muscle contraction.

Question 6

f. When acetylcholine is released onto organs, is it released from
sympathetic or parasympathetic nerves?

Answer 6

Parasympathetic nerves release ACh onto organs. (Sympathetic nerves release
noradrenalin (norepinephrine) onto organs). See image below

Question 7

g. What is the specific name for ACh receptors in organs?

Answer 7

Cholinergic (ACh) receptors found in all organs are called Muscarinic receptors.

Question 8

h. Give an example of how acetylcholine causes excitatory effects in some
organs while causing inhibitory effects in others.

Answer 8

ACh causes excitatory effects in digestive organs because it increases digestive
activities, such as increasing the stomach’s production of gastric juice. However, ACh
causes inhibitory effects in the heart because it slows down the heart rate.