Mechanisms 2 Flashcards
Gigantism
Hypersecretion of hGH
Pituitary dwarfism
Hyposecretion of hGH
Acromegaly
Hypersecretion of hGH
Secretion controlled by hypothalamic PRH and PIH
Targets mammary glands
Stimulates milk synthesis in the mammary glands
Prolactin (PRL)
Secretion controlled by hypothalamic CRH
Targets Adrenal Gland Cortex
Stimulates secretion of the adrenal gland cortex hormones
Adrenocorticotropic Hormones (ACTH)
Secretion controlled by hypothalamic TRH
Targets the thyroid gland
Stimulates secretion of the thyroid hormones
Thyroid Stimulating Hormone (TSH)
Secretion controlled by hypothalamic GnRH
Targets the ovaries and testes glands
Control male and female reproductive functions
Gonadotropins
(Follicle stimulating Hormone (FSH))
(Luteinizing Hormone (LH))
Secretion stimulates by releasing hormones from hypothalamus through ..
Hypophyseal Portal System
Secretion suppressed by inhibiting hormones from hypothalamus through …
Hypophyseal Portal System
The Pineal Gland is located
In the roof of the third ventricle of the brain
The pineal gland contains neuroglia and the ____ that secrete ____ hormone
Pinealocytes; Melatonin
Melatonin secretion lowest during ____ and highest at ___.
Daytime; Night
Functions of Melatonin
1) timing of sexual maturity
2) antioxidant
3) circadian rhythm setting
- large butterfly shaped gland in neck below voice box (larynx)
- has two lines connected by an isthmus
- made of follicles filled with a colloid
Thyroid Gland
