Endocrine System Flashcards
Master gland, regulates other glands
Pituitary
Gland: circadian rhythm, day/night cycles
Pineal gland
Gland: Stimulates metabolism
Thyroid
Regulates calcium in blood (gland)
Parathyroid
Initiates the immune system (gland)
Thymus
Maintain sodium and potassium balance, cell metabolism, resist stress, produce sex hormones, release adrenaline (gland)
Adrenal gland
Regulates blood sugar (gland)
Pancreas
Produce sex hormones necessary for reproduction (gland)
Gonads
Disorder: excessive drowsiness, disrupted sleep patterns
Hypersecretion of melatonin
Disorder: fertility difficulty
Hyposecretion of melatonin
Disorder: undersecretion of growth hormone, normal proportions with max height of 4 feet
Dwarfism
Growth hormone secreted after growth and development
Acromegaly
Oversecretion of GH, usually caused by pituitary tumor (disorder)
Gigantism
Hyper/hypo-secretion of LH/FSH (disorder)
Sterility
Hyposecretion of of ADH; excessive thirst and urination (disorder)
Diabetes insipidus
Enlarged thyroid gland due to insufficient iodine in diet (disorder)
Goiter
Early childhood disorder, hyposecretion can lead to mental and physical retardation
Cretinism
Hypothyroidism in adults that can lead to fatigue, obesity, dry skin, and low body temperature
Myxedema
Oversecretion resulting in high metabolism, weight loss, rapid heart rate
Hyperthyroidism
Hyperthyroidism resulting in enlarged thyroid, bulging eyes
Grave’s disease
Lack of PTH, uncontrollable muscle spasms, may cause death
Tetany
Causes massive bone destruction
Hyperparathyroidism
No immune system (bubble boy)
Immune deficiency
Hyposecretion, bronzed skin, muscle weakness, suppressed immune system
Addison’s disease
Hypersecretion, tumor in cortex, moonfaced, buffalo hump, high BP, depressed immune system
Cushing’s syndrome
Body does not produce enough insulin; type I and type II
Diabetes mellitus
Sterility, lack of physical development (sexual immaturity)
Hyposecretion of androgen/estrogen
Endocrine system vs. nervous system
Endocrine-slower
Chemical substances secreted by cells that regulate metabolic activity
Hormones