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Endocrine System (Parathyroid Glands (Independent (No other gland managing…
Endocrine System
Parathyroid Glands
4 spots on thyroid gland
Independent
No other gland managing
Measures calcium in blood
Parathyroid hormone
Increases blood Calcium levels
Adrenal medulla
Epinephrine
Norepinephrine
Fight or flight response
General Information
General Definitions
Hormone
Chemical Messenger
Target Cell
Has hormone receptor
Changed by hormone
Endocrine Gland
Defenstration
Blood streatm
Tropic/tropin
Stimulate other endocrine gland
Major Functions
Body Functions
Regulate
Coordinate
Control
Site of Messenger Action
Target cells throughout body
Time to onset of actions
Seconds/hours/days
Duration of Action
Hours/Days
Pituitary Gland
Anterior Pituitary Gland
Role of Hypothalamus
Secretes hormones
Inhibits hormone secretion
Increases hormone secretion
Structure
Endocrine gland tissue
Hormones
Growth hormone
Stimulate growth
Epiphyseal plate
All cells
Maintain cells in adulthood
Thyroid stimulating hormone
Stimulate thyroid
Produce hormone
Adrenocorticotropic hormone
Stimulate adrenal cortex
Produce hormone
Gonadotropins
Stimulate gonads
Follicle stimulating hormone
Luteinizing hormone
Prolactin
Stimulate synthesis of milk
Breast tissue
Posterior Pituitary Gland
Role of Hypothalamus
Synthesizes hormones for storage
Oxytocin
Uterine contraction
Vasopressin
Anti-diuretic
Structure
Part of brain
Not true endocrine gland tissue
Thyroid Gland
Thyroid hormone
Increases rate of metabolism
Calcitonin
Only active in children
Decrease activity of osteoclasts
Pancreas
Exocrine glands
Digestive system
Endocrine glands
Islet cells
Alpha cells
Glucagon
Increase blood glucose
Beta cells
Insulin
Decrease blood glucose
Gonads
Testes
Testosterone
Ovaries
Estrogen
Progesterone
Adrenal Cortex
Layers
Zona glomerulosa
Secretes mineralocorticoids
Make kidneys reabsorp
Water
Sodium
Outermost layer
Zona fasciculata
Secretes glucocorticoids
Maintain blood glucose levels
Zona reticularis
Deepest layer
Secrete glucocorticoids
Secrete androgens
Testosterone
Estrogen
Managing stress
Thymus Gland
Thymic hormones
Immunocompetency
T-lymphocytes
Produce immune response