A care-home manager reads that cortisol rises when people experience prolonged stress. She plans a study in which residents provide saliva samples before an...
Question 1 Report
A care-home manager reads that cortisol rises when people experience prolonged stress. She plans a study in which residents provide saliva samples before and after a weekly gardening session.
(a) Name the gland that releases cortisol. [1]
(b) Explain why the manager should collect the samples at the same time of day. [2]
(c) Use knowledge of hormones to predict the likely effect of a relaxing gardening session on cortisol. [1]
Answer Details
(a) Adrenal gland [1] (b) Cortisol levels naturally vary across the day [1]. Taking samples at the same time controls this circadian variation, making comparisons fairer [1]. (c) Cortisol is likely to decrease / be lower after the session [1].
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