Organization of the Nervous System Flashcards Preview

Neuroscience Deja Review USMLE 1 > Organization of the Nervous System > Flashcards

Flashcards in Organization of the Nervous System Deck (11)
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1
Q

What are the divisions of the autonomic nervous system?

A

Sympathetic, parasympathetic

2
Q

Where are the preganglionic cell bodies of the sympathetic nervous system?

A

Intermediolateral horn of the spinal cord from T1 to L3

3
Q

Where are the preganglionic cell bodies of the parasympathetic nervous system located?

A

Brainstem (cranial nerve nuclei) and spinal cord from S2 to S4

4
Q

Which is the primary neurotransmitter (NT) of both sympathetic and parasympathetic ganglia?

A

Acetylcholine (ACh)

5
Q

Which is the primary type of cholinergic receptor of both sympathetic and parasympathetic ganglia?

A

Nicotinic

6
Q

Which NT mediates the transmission of impulses from sympathetic neurons to effector organs?

A

Norepinephrine (NE)

7
Q

Which NT mediates the transmission of impulses from parasympathetic neurons to effector organs?

A

ACh

8
Q

Which NT mediates the transmission of impulses from somatic neurons to skeletal muscle?

A

ACh

9
Q

What types of receptors are present on the effector organs innervated by the sympathetic nervous system?

A

α1, α2, β1, and β2

10
Q

What type of receptor is present on the effector organs innervated by the parasympathetic nervous system?

A

Muscarinic

11
Q

What type of receptor is present on muscle innervated by the somatic nervous system?

A

Nicotinic