QuestionSBA
QuestionChoice
High FSH/LH levels in the blood will prevent GnRH release from the hypothalamus. This will in turn stop the release of FSH/LH from the anterior pituitary and is therefore an example of negative feedback.
10005080
e
Relationship between FSH/LH levels and GnRH release from the hypothalamus
QuestionChoice
This is an example of positive feedback because the release of oxytocin from the posterior pituitary gland during labour causes more release of oxytocin.
10005076
a
Releasing oxytocin from the posterior pituitary gland during labour
QuestionChoice
High growth hormone levels in the blood will prevent GHRH release from the hypothalamus. This will in turn stop the release of GH from the anterior pituitary and is therefore an example of negative feedback.
10005079
d
Relationship between growth hormone levels and GHRH release from the hypothalamus
QuestionChoice
High glucocorticoid levels in the blood will prevent CRH release from the hypothalamus. This will in turn stop the release of ACTH from the anterior pituitary and is therefore an example of negative feedback.
10005078
c
Relationship between glucocorticoid levels and CRH release from the hypothalamus
QuestionChoice
High thyroxine levels in the blood will prevent TRH release from the hypothalamus. This will in turn stop the release of TSH from the anterior pituitary and is therefore an example of negative feedback.
10005077
b
Relationship between thyroxine levels and TRH release from the hypothalamus
Concept
Chapter
2693
4367
Oxytocin
Topic
167
Endocrine physiology
13562
Which of the following describes an example of positive feedback?
a