WK 3: Autonomic Nervous System

Play an AI-generated podcast conversation about this lesson

Where do preganglionic axons exit the spinal cord?

Spinal nerve

Ventral root (correct)

Dorsal root

White ramus

What is the function of the white ramus?

To form splanchnic nerves

To synapse with postganglionic neurons

To separate from the ventral root (correct)

To enter paravertebral ganglia

Where do preganglionic axons synapse with postganglionic neurons?

In the spinal cord

In the paravertebral ganglia (correct)

In the sympathetic chain

In the prevertebral ganglia

What is the neurotransmitter released in the parasympathetic system at both levels?

Acetyl choline Signup and view all the answers

What is the neurotransmitter released in the sympathetic nervous system onto target organs?

Noradrenaline Signup and view all the answers

What is the function of splanchnic nerves?

To pass through without synapsing Signup and view all the answers

What is the difference between hormones and neurotransmitters?

All of the above Signup and view all the answers

What is the main function of the vertebrae in the human body?

To create vertical alignment and protection for the spinal cord Signup and view all the answers

Where are the pre-ganglionic neurons located in the autonomic nervous system?

In the CNS (Central Nervous System) Signup and view all the answers

What is the primary function of the sympathetic nervous system?

To facilitate the fight or flight response Signup and view all the answers

How many cervical vertebrae are there in the human spine?

7 Signup and view all the answers

What is the filum terminale?

The end of the spinal cord Signup and view all the answers

Where are the sympathetic ganglia located?

Along the spinal cord Signup and view all the answers

What is the main difference between the sympathetic and parasympathetic nervous systems?

Their response to stress (fight or flight vs. relaxation) Signup and view all the answers

What is the primary effect of the parasympathetic nervous system on heart contractions?

Decreased rate and force of heart contractions Signup and view all the answers

What is the result of vasoconstriction caused by the sympathetic nervous system?

Shunts blood to vital organs Signup and view all the answers

What is released by the sympathetic nervous system to increase glucose levels?

Adrenaline Signup and view all the answers

What is the effect of the parasympathetic nervous system on gastrointestinal activity?

Increased gastrointestinal activity Signup and view all the answers

What is the result of damage to the spinal cord in terms of ANS function?

Location-specific ANS dysfunction Signup and view all the answers

What is the effect of the sympathetic nervous system on pupils?

Dilates pupils Signup and view all the answers

What is the effect of the parasympathetic nervous system on airways?

Constricts airways Signup and view all the answers

What determines the effects of the ANS on target organs?

The type of neurotransmitter released Signup and view all the answers