Autonomic Nervous System

The ANS does NOT control:

• blood pressure

• heart rate

• digestion

• voluntary muscle contraction

Tags

NGSS.HS-LS1-3

Ronnie damaged his autonomic ganglia. What part of the visceral reflex arc is interrupted?

• Sensory reception

• initiation of a motor impulse in the CNS

• motor response in a target cell

• integration

Where do the cell bodies of preganglionic neurons of the sympathetic nervous system originate?

• thoracic and upper lumbar regions of the spinal cord

• cervical and sacral regions of the spinal cord

• cranial nerves and the sacral region of the spinal cord

• cranial nerves and the lumbar region of the spinal cord

What neurotransmitter is released by the sympathetic preganglionic neuron to communicate with the sympathetic postganglionic neuron?

• adrenalin

• norepinephrine

• acetylcholine

• epinephrine

Receptors that bind norepinephrine and epinephrine are known as:

• cholinergic

• muscarinic

• nicotinic

• adrenergic

If a drug is administered to block the heart's adrenergic receptors, how is heart rate affected during exercise?

• Heart rate will be unable to increase in response to exercise.

• Heart rate will increase in response to the drug.

• The heart will stop beating.

• The drug has no effect on heart rate during exercise.

Tags

NGSS.HS-LS1-3

An adrenergic beta-2 agonist will have which effect on the diameter of the respiratory passageways?

• Bronchodilation

• Bronchoconstriction

• No effect

• Bronchoconstriction first, then bronchodilation

The axons of parasympathetic postganglionic neurons are:

• found within the CNS.

• long.

• found close to the spinal cord.

• short.

Which neurotransmitter is released by both preganglionic and postganglionic parasympathetic neurons at their synapses?

• both epinephrine and norepinephrine

• epinephrine

• norepinephrine

• acetylcholine

Decreased parasympathetic stimulation would cause:

• a slow heart rate.

• diarrhea.

• a dry mouth.

• frequent urination.

Tags

NGSS.HS-LS1-3