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Questions and Answers
Which cells in the adrenal medulla are considered modified sympathetic postganglionic neurons lacking axons and dendrites and specialized as secretory cells?
Which cells in the adrenal medulla are considered modified sympathetic postganglionic neurons lacking axons and dendrites and specialized as secretory cells?
- Parenchymal cells
- Sinusoidal cells
- Reticular cells
- Chromaffin cells (correct)
What is the function of norepinephrine in the adrenal medulla?
What is the function of norepinephrine in the adrenal medulla?
- Increases heart rate
- Constricts vessels of the digestive system and skin (correct)
- Increases blood flow to the heart, muscles, and brain
- Dilates bronchioles
What is the primary hormone secreted by chromaffin cells in the adrenal medulla?
What is the primary hormone secreted by chromaffin cells in the adrenal medulla?
- Cortisol
- Norepinephrine
- Epinephrine (correct)
- Dopamine
What triggers the release of epinephrine and norepinephrine from the adrenal medulla?
What triggers the release of epinephrine and norepinephrine from the adrenal medulla?
What is the function of the adrenal medulla during normal activities?
What is the function of the adrenal medulla during normal activities?
Which blood vessels penetrate the adrenal gland capsule independently and form a subcapsular arterial plexus?
Which blood vessels penetrate the adrenal gland capsule independently and form a subcapsular arterial plexus?
Which cells in the adrenal medulla contain electron-dense granules for storage and secretion of catecholamines?
Which cells in the adrenal medulla contain electron-dense granules for storage and secretion of catecholamines?
What is the dual blood supply of the adrenal medulla?
What is the dual blood supply of the adrenal medulla?
How does the adrenal gland receive its blood supply?
How does the adrenal gland receive its blood supply?
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