QuestionSBA
QuestionChoice
ACTH regulates the secretion of glucocorticoids from the zona fasciculata of the adrenal cortex.
10004642
b
Adrenocorticotropic hormone (ACTH) is a peptide hormone that regulates the secretion of glucocorticoid hormones from the zona reticularis of the adrenal cortex
QuestionChoice
Epinephrine and norepinephrine are released by the adrenal medulla by sympathetic stimulation and local effects of cortisol. They positively feedback to the pituitary gland, increasing the breakdown of POMC into adrenocorticotropic hormone (ACTH).
10004643
c
Epinephrine and norepinephrine released by the adrenal medulla negatively feedback to the pituitary gland, reducing the breakdown of POMC into an adrenocorticotropic hormone
QuestionChoice
Adrenocorticotropic hormone (ACTH) is secreted by the anterior pituitary gland.
10004644
d
Adrenocorticotropic hormone (ACTH) is secreted by the hypothalamus
QuestionChoice
Corticotropin-releasing hormone is released from the hypothalamus onto the anterior pituitary gland. The posterior pituitary gland releases oxytocin and vasopressin.
10004645
e
Corticotropin-releasing hormone (CRH) is released from the posterior pituitary gland
QuestionChoice
Cortisol is synthesised from cholesterol in the zona fasciculata of the adrenal cortex following stimulation by ACTH. Cortisol acts on many tissues in the body, but in the brain, it mediates its effects by stimulating mineralocorticoid receptors and glucocorticoid receptors.
10004641
a
Cortisol acts on two types of receptors in the brain- mineralocorticoid receptors and glucocorticoid receptors
Concept
Chapter
2693
3897
Hormones of the anterior pituitary gland
Topic
167
Endocrine physiology
13475
Which of the following statements correctly describes an aspect of the HPA axis?
a