Patient Time Cortisol Levels (nmol/L) 1 09:00 a.m. 140 1 Midnight 80 2 09:00 a.m. 580 2 Midnight 315 3 09:00 a.m. 350 3 Midnight 235 Three patients had their blood samples analyzed for levels of cortisol hormone. Their blood samples were drawn at 9 a.m. in the morning and at 12 a.m. (midnight). a) Compare the different levels of cortisol between morning and night. Use data from the table as evidence. b) Considering the fact that most people do not eat for approximately 12 hours after having dinner and before they eat breakfast, explain why there is a difference in cortisol levels between morning and night. c) Provide an example of another hormone involved in the regulation of blood glucose levels that would be higher in the morning, before breakfast

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
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Cortisol Levels in Blood Plasma

Patient Time Cortisol Levels (nmol/L)
1 09:00 a.m. 140
1 Midnight 80
2 09:00 a.m. 580
2 Midnight 315
3 09:00 a.m. 350
3 Midnight 235


Three patients had their blood samples analyzed for levels of cortisol hormone. Their blood samples were drawn at 9 a.m. in the morning and at 12 a.m. (midnight).

a) Compare the different levels of cortisol between morning and night. Use data from the table as evidence.

b) Considering the fact that most people do not eat for approximately 12 hours after having dinner and before they eat breakfast, explain why there is a difference in cortisol levels between morning and night.

c) Provide an example of another hormone involved in the regulation of blood glucose levels that would be higher in the morning, before breakfast.

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