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What regulates the functions of the body Nervous and endocrine systems act together to coordinate functions of all body systems
Nervous system biological communication system
Endocrine system uses biochemical called hormones that travel in body fluids and act as chemical messengers to target cell
Exocrine glands secrete products through ducts that lead to the lumen of an organ, body surface or cavity ie. sweat glands
Endocrine glands have no ducts; secretes hormones into extracellular fluids and diffuse into the bloodstream
Hormone mediator molecule that is released in one part of the body but regulates the activity of cells in other parts
Hormone is? A chemical messenger to a specific target cell
What do hormones regulate? Metabolism; h2o and electrolyte balance; growth and development; reproduction
Circulating hormones most endocrine hormones are circulating hormones
How many types of local hormones? Paracrine and Autocrines; do not circulate
Lipid-soluble hormones Steroid; Thyroid; nitric oxide
Water-Soluble Amine; Peptide; protein; Eicosanoid hormones
What is te mechanism of action? diffuse into cell from blood
What are the characteristics of water-soluble hormones? Binds to receptor on exterior surface;
5 different mechanisms of hormone control? Signals from nervous system; Chemical changes in blood; Other changes; Negative feedback; Positive feedback
3 effects of hormone Interaction? Permissive; Synergistic; Antagonistic
Functions of the endocrine system control internal environment; respond to marked changes; growth and development; reproduction process; regulate metabolism
Where is the pituitary gland located Sella Turcica in the base of the brain
What hormones does the Anterior pituitary gland secrete? GH-Growth Hormone; PRL-Prolactin; THS-Thyroid stimulating hormone; ACTH-Adrenocorticotropic Hormone; LH-Leuetinizing Hormone; FSH-Folicle stimulating hormone
What hormones are stored in the posterior pituitary gland? ADH-Antidiuretic hormone; OT-Oxytocin
What 3 hormones are secreted by the Thyroid gland? Thyroxine (T4, T3) and Calcitonin Basal metabolic rate; reduce blood calcium levels
What hormone does the parathyroid gland secrete? PTH-Parathyroid Hormone...increases blood calcium levels
the 2 layers of the adrenal glands? Medulla-center; Cortex- outer
The cortex has 3 zones Adrenal androgens; Glucocorticoids (cortisol); Mineralocorticoids (Aldosterone)
What 2 hormones does the Medulla secrete? Epinephrine; Norepinephrine 80% epinephrine
The pancreas secretes what 2 hormones? Glucagon and Insulin
What hormone does the pineal gland secrete? Melatonin
What does the thymus gland secrete? develop T-Helper cells for immunity
What does the kidneys secrete?
Created by: cborealis2



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