L3 Autonomic Nervous System

Question 1 of 11

1

There are two main nervous systems, the ❌. The ❌ nervous system is further divided into the somatic, autonomic, and enteric systems.
The ANS is divided into:
1. ❌ nervous system - mobilises the body’s nervous system fight-or-flight response; it is also constantly active at a basal level to maintain homeostasis.
2. ❌ nervous system - regulates organ and gland functions during rest and is considered a slowly activated, dampening system(rest and digest, feed and breed).

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central and the peripheral

peripheral

Sympathetic

Parasympathetic

Explanation

Question 2 of 11

1

The autonomic nervous system (ANS) is located in the hypothalamus, and the medulla oblongata acts to integrate autonomic function after receiving feedback.

Select one of the following:

True
False

Explanation

Question 3 of 11

1

Choose the two correct statements.

Select one or more of the following:

The SNS leaves the spine at thoracic and lumbar regions.
The PNS leaves the spine at thoracic and lumbar regions.
The SNS leaves the spine at cranial and sacral regions.
The PNS leaves the spine at cranial and sacral regions.

Explanation

Question 4 of 11

1

Everything done in the nervous system involves 3 fundamental steps:
1. A sensory function detects internal and external ❌
2. An ❌ is made (analysis)
3. A ❌ occurs (reaction)
Three main types of neurons take part in this process:
• ❌ neurons carry signals from the outer parts of your body (periphery) into the central nervous system. This makes them ❌.
• Interneurons connect various neurons ❌ the brain and spinal cord (entirely within the ❌).
• ❌ neurons carry signals from the central nervous system to the outer parts (muscles, skin, glands) of your body. This makes them ❌.

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stimuli

interpretation

motor response

Sensory

afferent

within

CNS

efferent

Motor

Explanation

Question 5 of 11

1

An AP has two main phases, depolarizing and repolarizing.
After depolarisation occurs above a ❌ potential, an ❌ potential occurs. There is then a ❌ period, where the neuron cannot be ❌, followed by repolarisation to the ❌ potential.

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threshold

action

refractory

re-stimulated

resting membrane

Explanation

Question 6 of 11

1

Signal transmission at the synapse is a one-way transfer from a presynaptic neuron to a postsynaptic neuron, which turns an electric signal into a chemical signal. Labelnof transmission across a synapse from 1 to 6.

❌. The neurotransmitter binds to ligand-gated receptors on the postsynaptic membrane.
❌. Voltage-gated Ca2+ channels open and Ca2+ flows inward to the presynaptic neuron.
❌. The neurotransmitter crosses the synaptic cleft.
❌. Ca2+ influx triggers release of the neurotransmitter.
❌. AP reaches the end bulb of axon terminals.
❌. The postsynaptic neuron receives the chemical signal and in
turn generates an electrical signal (postsynaptic potential).

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1

5

2

4

3

6

Explanation

Question 7 of 11

1

A neurotransmitter (chemical) can be excitatory, inhibitory, or both(in different locations).

Select one of the following:

True
False

Explanation

Question 8 of 11

1

Many neuronal cell bodies are called a ❌. Many ❌ form a ❌.

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ganglion

ganglia

plexus

Explanation

Question 9 of 11

1

Choose the correct statements.

Select one or more of the following:

Both the parasympathetic and sympathetic divisions are two-neuron systems.
Both the parasympathetic and sympathetic divisions are one-neuron systems.
The somatic NS is a one-neuron system.
The somatic NS is a one two-neuron system.

Explanation

Question 10 of 11

1

In the PNS, the neurotransmitter ❌ is released at both synapses.
In the SNS, ❌ is released at the presynaptic neuron and ❌ is released at the postsynaptic neuron.
ACh binds to ❌ receptors. Norepinephrine/epinephrine binds to ❌ receptors.

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acetylcholine (ACh)

ACh

norepinephrine/epinephrine

muscarinic and nicotinic

adrenergic alpha or beta

Explanation

Question 11 of 11

1

Chose the correct statement.

Select one of the following:

Alpha and beta adrenergic receptors are G-protein coupled.
Muscarinic receptors are ligand gated.
Nicotinic receptors are G-protein coupled.

	Created by Mer Scott over 5 years ago

L3 Autonomic Nervous System

Question 1 of 11

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Explanation

Question 2 of 11

The autonomic nervous system (ANS) is located in the hypothalamus, and the medulla oblongata acts to integrate autonomic function after receiving feedback.

Select one of the following:

Explanation

Question 3 of 11

Choose the two correct statements.

Select one or more of the following:

Explanation

Question 4 of 11

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Explanation

Question 5 of 11

An AP has two main phases, depolarizing and repolarizing. After depolarisation occurs above a ❌ potential, an ❌ potential occurs. There is then a ❌ period, where the neuron cannot be ❌, followed by repolarisation to the ❌ potential.

Drag and drop to complete the text.

Explanation

Question 6 of 11

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Explanation

Question 7 of 11

A neurotransmitter (chemical) can be excitatory, inhibitory, or both(in different locations).

Select one of the following:

Explanation

Question 8 of 11

Many neuronal cell bodies are called a ❌. Many ❌ form a ❌.

Drag and drop to complete the text.

Explanation

Question 9 of 11

Choose the correct statements.

Select one or more of the following:

Explanation

Question 10 of 11

In the PNS, the neurotransmitter ❌ is released at both synapses. In the SNS, ❌ is released at the presynaptic neuron and ❌ is released at the postsynaptic neuron. ACh binds to ❌ receptors. Norepinephrine/epinephrine binds to ❌ receptors.

Drag and drop to complete the text.

Explanation

Question 11 of 11

Chose the correct statement.

Select one of the following:

Explanation

An AP has two main phases, depolarizing and repolarizing.
After depolarisation occurs above a ❌ potential, an ❌ potential occurs. There is then a ❌ period, where the neuron cannot be ❌, followed by repolarisation to the ❌ potential.

In the PNS, the neurotransmitter ❌ is released at both synapses.
In the SNS, ❌ is released at the presynaptic neuron and ❌ is released at the postsynaptic neuron.
ACh binds to ❌ receptors. Norepinephrine/epinephrine binds to ❌ receptors.