Autonomic Nervous System: Divisions and Functions

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What is the role of the hypothalamus?

Conducting pupillary reflexes

Regulating only the autonomic function

Receiving input from the limbic lobe

Control center for homeostatic mechanisms (correct)

Which part of the brain is responsible for emotion and memory function?

Medulla

Limbic lobe (correct)

Hypothalamus

Forebrain bundle

What happens when nicotine affects the autonomic nervous system?

Heart rhythm can be affected (correct)

Increased parasympathetic tendency

Vascular tone becomes less sympathetic

Decreased heart rhythm

Which drugs enhance adrenergic function by binding to receptors and increasing norepinephrine production and release?

Cocaine Signup and view all the answers

What is the effect of sympatholytic drugs?

Interrupt sympathetic nerve signaling Signup and view all the answers

What is the main pathway for communication in the hypothalamus?

Medial forebrain bundle Signup and view all the answers

What is the primary function of the divisions of the Autonomic Nervous System discussed in Chapter 15?

Maintain homeostasis Signup and view all the answers

Which division of the Autonomic Nervous System is associated with the 'fight or flight' response?

Sympathetic division Signup and view all the answers

Where do sympathetic signals primarily come from in the Autonomic Nervous System?

Thoracic and superior lumbar nerves Signup and view all the answers

Which ganglia are a part of the enteric nervous system in the Autonomic Nervous System?

Mesenteric ganglia Signup and view all the answers

What type of fiber travels from the sympathetic ganglion to the target effector in the Autonomic Nervous System?

Long, unmyelinated fiber Signup and view all the answers

Where do preganglionic fibers in the parasympathetic division lead to before reaching the target effector?

Terminal ganglia Signup and view all the answers

Which type of synapse involves the release of norepinephrine to either an alpha or beta receptor?

Adrenergic synapse Signup and view all the answers

Which type of receptor is activated by acetylcholine in the cholinergic synapse?

Ligand-gated channel Signup and view all the answers

What is the second signaling molecule in the adrenergic synapse?

Epinephrine Signup and view all the answers

What type of nervous system has a short reflex based on distention of the stomach?

Enteric nervous system Signup and view all the answers

What would be the heart rate without the parasympathetic signal to slow it down?

$100$ bpm Signup and view all the answers

In which type of synapse is acetylcholine released to muscarinic receptors?

Cholinergic synapse Signup and view all the answers