15 Questions
What hormone does the hypothalamus release to stimulate the anterior pituitary gland?
Corticotropin releasing hormone (CRH)
Which gland is stimulated by the release of CRH from the hypothalamus?
Pituitary gland
In the HPA axis, what hormone does the anterior pituitary gland secrete in response to CRH?
Adrenocorticotropic hormone (ACTH)
Which term describes a mechanism where rising levels of a hormone inhibit its own further release?
Negative feedback control
What type of axis is formed by the hypothalamus, pituitary gland, and adrenal glands in endocrine regulation?
Hypothalamic-pituitary-adrenal axis
What axis is triggered in response to stress, both physical and psychological?
Hypothalamic-pituitary-adrenal (HPA) axis
Which gland is primarily responsible for secreting hormones that stimulate the HPA axis?
Hypothalamus
In the negative feedback control mechanism, which component typically inhibits further release of stress hormones?
Pituitary gland
Which type of control loop is involved in the stress response when the HPA axis is activated?
Positive feedback control
What is the primary function of the pituitary gland in the context of the HPA axis during a stress response?
To sense stress and activate the cascade of hormone release
What effect does rising cortisol levels have on the hypothalamus and pituitary gland in response to stress?
They exert negative feedback on both the hypothalamus and pituitary gland
In the negative feedback mechanism involving cortisol, what is the role of the hypothalamus?
It senses cortisol levels and signals the pituitary gland to inhibit hormone secretion
How does cortisol influence the secretion of hormones from the pituitary gland?
It decreases hormone secretion by exerting negative feedback on the pituitary gland
Which of the following best describes the relationship between rising cortisol levels and the HPA axis?
Cortisol functions in a negative feedback loop to regulate the HPA axis activity
What is the primary effect of cortisol on the hypothalamus and pituitary gland when stress occurs?
Triggering a negative feedback mechanism to reduce further hormone release
Test your knowledge on how the body responds to stress by triggering the hypothalamic-pituitary-adrenal (HPA) axis, whether it's physical or psychological stress.
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