Endocrine System Flashcards
Exocrine
Secretion into a duct
Distal/downstream organ is target for effect
Endocrine
Secretion into bloodstream
Potentially multiple target organs for effect
Pituitary Gland
“master gland” and composed of anterior and posterior lobe
Anterior lobe of pituitary gland
Produces & secretes for bodily functions
6 major hormones
Posterior lobe of pituitary gland
Stores & secretes 2 hormones, ≠ production, Oxytocin & ADH
Thyroid gland
Hormones of metabolism, breathing, heart rate, body weight, muscle strength, body temperature
Hyperthyroidism
Excessive thyroid hormone → over simulation & ↑ body metabolism
Graves disease
Most common form of hyperthyroidism, pressure or pain in eyes, eyelids retract, sensitive to light
Hypothyroidism
Deficiency = slowed body metabolism
Most common thyroid disorder, elevated TSH levels
type 1 hypothyroidism
primary/hormone deficient – result of reduced functional thyroid tissue, 95%
type 2 hypothyroidism
secondary/hormone resistant – inadequate simulation of thyroid gland due to pituitary or hypothalamic disease
parathyroid gland
Secrete PTH = regulation of calcium & phosphorus metabolism
Hyperparathyroidism
Disorder of overactivity of 1 or more of parathyroid glands
Disrupts calcium, phosphate & bone metabolism
Hypoparathyroidism symptoms
Tinging in fingertips, mouth & feet becomes more severe & painful muscle tension, spasms, grimacing, laryngospasm & arrhythmias
Addison’s Disease
Primary adrenal insufficiency, Disorder within adrenal gland = ↓ cortisol & aldosterone production