Endocrine System Flashcards
Direct Hormones
Stimulate Target Tissue Directly
Indirect Hormones S
Stimulate release of other horomones that stimulate the target tissue
Pineal Gland
Melatonin Release - controls circadian rhythms
Hypothalmus
Secretes stimulating & inhibitory hormones that influence pituitary
Pituitary Gland (Split into what?)
Anterior = adenohypophysis
-simple cuboidal
Posterior = neurohypophysis
-nervous tissue
Anterior Pit. Hormones?
Synthesize own horomones -Hypothalamus secretes hormones that stimulate or inhibit release of Ant. Pit. hormones Follicle Stimulating Hormone (FSH) Luteinizing Hormone (LH) Adrenocoticotropic Hormone Thyroid Stimulating Hormone Prolactin Growth Hormone Mneumonic = FLAT PG
FSH
Follicle Stimulating Hormone Trigger: puberty Effect: M- sperm production F- Menstraul Cycle, Egg Maturation, blood estrogen levels in first half of pregnancy Target: gonads
Luteinizing Hormone
Effect
M- Stimulate testes to release testosterone
F- Menstrual cycle, triggers egg release from ovarian follicle (ovulation)
Target: gonads
Adrenocorticotropic Hormone
Trigger: metabolism, stress
Effect: cortisol production
Target: adrenal gland
TSH
Thyroid Stimulating Hormone
Effect: triggers thyroid hormone production
Target: thyroid
Prolactin
Trigger: pregnancy
Effect: promotes milk production
Target: mammary glands
Growth Hormone
Trigger: growth
Effect: promotes cell growth
Target: all cells
Prolactin Releasing Horomone (PRH)
Released by hypothalmus, stimulates Ant. Pit. to release Prolactin
Thyotropin Releasing Hormone (TRH)
Released by hypothalmus, stimulates Ant. Pit. to release Thyroid Stimulating Hormone
Corticotropin Releasing Hormone (CRH)
Released by hypothalmus, stimulates Ant. Pit. to release Adrenocorticotropic Hormone
Growth Hormone Releasing Hormone & Growth Hormone Inhibiting Hormone
Released by hypothalmus, stimulates Ant. Pit. to release or inhibit Growth Hormone
Gonadotropin Releasing Hormone
Released by hypothalmus, stimulates Ant. Pit. to release Luteinizing Hormone & Follicle Stimulating Hormone
Posterior Pituitary (Hormones?)
ATH - anit diuretic hormone
Oxytocin
Oxytocin
Secreted by Post. Pit.
- stimulate milk ejection
- stimulates uterine contractions
ADH
Anti-diuretic hormone
- Stimulates water resorption & retention via kidneys
- stimulates vasoconstriction and increase in BP
Posterior Pituitary Hormones stimulated via ?
Neurons extending from the hypothalamus to the post. pit. using neurotransmitters.
Thyroid Secretes what horomones?
These hormones triggered for release via TSH from Ant. Pit.
T3 - triiodothyronine
T4 - Thyroxine
Calcitonin
T3 - Triiodothyronine
These hormones triggered for release via TSH from Ant. Pit.
increases basal metabolic rates
T4 - thyroxine
These hormones triggered for release via TSH from Ant. Pit.
increases basal metabolic rates
