Autonomic Nervous System

Which neurotransmitter is released by the sympathetic postganglionic nerve?

• Acetylcholine

• Epinephrine

• Norepinephrine

• Dopamine

Where is the ganglia of the parasympathetic arm of ANS located?

• Near the brain

• Near the target organ

• Near adrenal medula

• Near the spinal cord

Which of the following is the INCORRECT pairing of neuron and neurotransmitter released?

• Sympathetic preganglionic neuron - acetylcholine

• Parasympathetic preganglionic neuron - acetylcholine

• Sympathetic postganglionic neuron - norepinephrine

• Parasympathetic postganglionic neuron - norepinephrine

Which of the following is a correct receptor-tissue pairing for sympathetic activation?

• α1 adrenergic receptor - gastrointestinal smooth muscle

• α₂ adrenergic receptor - skeletal muscle blood vessels

• β₁ adrenergic receptor - cardiac nodal cells

• β₂ adrenergic receptor - skin blood vessels

In which of the following situations, would sympathetic arm of ANS be predominant?

• Attending an 8 am lecture

• Sitting for a Physiology exam

• Eating KFC for lunch

• Jogging around campus

Which of the following is the effect of sympathetic activation in a target organ?

• Dilation of the blood vessels in skeletal muscle

• Decreased heart rate

• Increased gastrointestinal secretions

• Contraction of the bladder wall

Tags

NGSS.HS-LS1-3

Which of the following is the effect seen during a restful activity?

• Dilation of the pupil

• Decreased secretion of the sublingual gland

• Increased secretion of the parotid gland

• Increased secretion of sweat glands

Tags

NGSS.HS-LS1-3

Which effect will be observed following the administration of nicotinic cholinergic antagonist?

• Only sympathetic effects are inhibited.

• Only parasympathetic effects are inhibited.

• Both sympathetic and parasympathetic effects are inhibited.

• Both sympathetic and parasympathetic effects are unaffected.