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Endocrine system
Hormones and glands that you need to know
17
Anatomy
Undergraduate 2
12/25/2012

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Cards

Term
GnRH
Definition
- Gonadotropin RH
- Stimulates release of LH and FSH
Term
TRH
Definition
- Thyrotropin RH
- Stimulates release of TSH and GH
Term
CRH
Definition
- Corticotropin RH
- Stimulates release of ACTH
Term
PRH
Definition
- Prolactin RH
- Stimulates release of PRL
Term
PIH
Definition
- Prolactin IH (dopamine)
- Inhibits release of PRL
Term
GHRH
Definition
- Growth hormone RH
- Stimulates release of GH
Term
Growth hormone IH
Definition
- Somatostatin
- Inhibits release of GH
Term
ADH
Definition
- Antidiuretic hormone
- Prevents dehydration
Term
OT
Definition
- Oxytocin
- Produces uterine contractions and release of milk
Term
What are the 9 hypothalamic hormones?
Definition
- GnRH, TRH, CRH, PRH, PIH, GHRH, Somatostatin, ADH, OT
- The first 7 travel through portal system to adenohypophysis; OT and ADH are released by neurohypophysis via tract.
Term
what are the 6 anterior pituitary hormones?
Definition
- FSH, LH, TSH, ACTH, PRL, GH
Term
What is an example of a neuroendocrine reflex?
Definition
- Hormone release in response to nervous system signals

suckling infant -> stimulates nerve endings -> hypothalamus -> posterior lobe -> oxytocin -> milk ejection
Term
Pineal gland
Definition
- Peak secretion 1-5 yr. old
- Produces serotonin by day, converts it to melatonin and secretes it at night
- indirectly receives information from retinas
- circadian & diurnal clocks/rhythms
- timing of puberty
Term
Thymus
Definition
- Secretes hormones (Thymosin) that regulate development and later activation of immune system
Term
Thyroid Gland
Definition
- Largest endocrine gland with high rate of blood flow
- Secretes Thyroid hormone (T3 + T4 (thyroxine))
Term
Parathyroid
Definition
- Secretes PTH (Parathormone)
- Increases Ca2+ levels
Term
Adrenal gland
Definition
3 Layers of adrenal cortex: (outer) zona glomerulosa, (middle) zona fasciculata, (inner) zona reticularis
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