Hypothalamus, Pituitary gland Flashcards
Hypothalamus
-controls emotions, autonomic function, and pituitary gland
-helps maintain homeostasis by regulating the INTERNAL enviorment
Describe the HPA axis:
-Hypothalamus, Pituitary gland, Adrenal gland
-the specific cite of neuro-endocrine interaction
(governs heart rate, O2, temp, and pituitary gland)
how is the pituitary gland divided?
Into a posterior lobe and an antrior lobe
Hormones released by the posterior lobe are synthesizes by neurons in the _______
hypothalamus.
The hypothalamus DIRECTLY impacts the posterior pituitary lobes by neural connection
what 2 hormones does the posterior lobe of the pituitary gland secrete?
Oxytocin and Antidiuretic Hormone (ADH)
Oxytocin
-released by the posterior lobe
-stimulates uterine contraction of labor, stimulates release of milk from mammilary gland.
-can delay menstration
Antidiuretic hormone
-released by the posterior lobe
-increases permiabiility of DCT and collecting duct to conserve H20 and concentrate urine
The anterior lobe of the pituitary gland produces its own hormones whose production are stimulated by ____.
hypothalamic releasing hormones
What are the 3 systemic hormones that the Anterior lobe secretes?
GH, prolactin, and Melanocyte stimulating hormone (MSH)
Growth hormone (GH):
Stimulates body cells to grow
What are the names of the two genetic metabolic disorders where too much GH is secreted over time?
Acromegaly and giantism
Acromegaly
where the body never stops secreting GH
Giantism
body produces way too much GH during puberty
Prolactin
-secreted by anterior lobe
-assist in development of mammary glands in the breast, Help with milk production, helps with fat and CHO metabolism for males and females
-puts brakes on after sex
Melanocyte stimulating hormone (MSH):
-secreted by anterior lobe
-Stimulates melanocytes to synthesize mealonin
