MEDC553 TUTOR QUIZ (1-26-24)

What physiological effects do epinephrine and norepinephrine have on the body?

• Increase Blood Flow to the Brain

• Decrease Sweat

• Pupil Dilation

• Increase Muscle Strength

• Increase Heart Rate and Contraction

How long do the physiological effects of epinephrine and norepinephrine last?

What is the biological target for adrenergic agents?

• Muscarinic Receptors

• Adrenergic Receptors

• Nicotinic Receptors

What nervous system do the adrenergic agents target?

• Central Nervous System

• Parasympathetic Nervous System

• Sympathetic Nervous System

• Somatic Nervous System

Do adrenergic agents target the preganglionic or postganglionic neurons?

• Preganglionic

• Postganglionic

Where is norepinephrine synthesized in the body?

Where is epinephrine synthesized in the body?

What is the rate-limiting step in the synthesis of these molecules?

• the conversion of norepinephrine to epinephrine

• the conversion of L-dopa to dopamine

• the conversion of dopamine to norepinephrine

• the conversion of L-tyrosine to L-dopa

What enzyme catalyzes the conversion of L-tyrosine to L-dopa?

• dopamine beta-hydroxylase

• tyrosine hydroxylase

• phenylethanolamine N-methyl transferase

• aromatic L-amino acid decarboxylase

Why is it important for norepinephrine to be cleared from the synapse?