Chapter 24 - Endocrine System and Pathologies Flashcards
nervous and endocrine system can be referred as
neuroendocrine system
study of the endocrine system
endocrinology
secrete hormones directly into the bloodstream and are ductless glands
endocrine glands
secrete the products into ducts that open to body cavities, center of a hollow organ, or onto the surface of the body
exocrine glands
hypothalamus, pituitary gland, thyroid gland, parathyroid gland, adrenal gland, pancreas, ovaries, testes –> what type of glands of the endocrine system
endocrine glands
sudoferous glands, sebaceous glands, salivary glands –> what type of glands of the endocrine system?
exocrine glands
hormone production/secretion, metabolism regulation, stress adaptation, chemical composition/fluid volume regulation, and reproductive process regulation –> functions of what system?
endocrine system
chemical messengers that regulate physiologic activity of other cells
hormones
possess receptors for the corresponding hormone
target cells
stimulates the adrenal cortex to secrete hormones, especially cortisol
which hormone?
which gland?
adrenocorticotropic hormone (ACTH)
anterior pituitary
maintains sodium levels
which hormone?
which gland?
aldosterone
adrenal cortex
decreases urine production and raises BP
which hormone?
which gland?
antidiuretic hormone (ADH)
posterior pituitary
decreases blood calcium levels
which hormone?
which gland?
calcitonin (CT)
thyroid
helps ensure glucose, lipids, and amino acids are available for energy during times of stress
which hormone?
which gland?
cortisol (hydrocortisone)
adrenal cortex
enhances and prolongs sympathetic arousal
which hormone?
which gland?
epinephrine
adrenal medulla
development of female secondary sex characteristics
which hormone?
which gland?
estrogens
ovaries
females - stimulates estrogen production and ovarian follicle development
males - stimulates sperm production
which hormone?
which gland?
follicle-stimulating hormone (FSH)
anterior pituitary
increases blood glucose levels
which hormone?
which gland?
glucagon
pancreas (alpha cells)
stimulates protein synthesis for muscle and bone growth, maintenance, and repair
which hormone?
which gland?
growth hormone (GH)
anterior pituitary
decreases blood glucose levels
which hormone?
which gland?
insulin
pancreas (beta cells)
females - stimulates the release of estrogens and progesterone, ovulation, and development of the corpus luteum
males - stimulates testosterone production
which hormone?
which gland?
luteinizing hormone (LH)
anterior pituitary
increases skin pigmentation
which hormone?
which gland?
melanocyte-stimulating hormone (MSH)
intermediate pituitary
controls biorhythms or body’s 24-hour cycle
which hormone?
which gland?
melatonin
pineal
enhances and prolongs sympathetic arousal
which hormone?
which gland?
norepinephrine
adrenal medulla
stimulates uterine contractions and milk expression from mammary glands
which hormone?
which gland?
oxytocin
posterior pituitary
increases blood calcium levels
parathyroid hormone
parathryoids
maintains the uterine lining for implantation and pregnancy
progesterone
ovaries and placenta
stimulates milk production from mammary glands
prolactin
anterior pituitary
regulates metabolism
T3 + T4
thyroid
promotes male secondary sex characteristics, libido, and sperm production
testosterone
testes
stimulates T-cell maturation
thymopoietin and thymosin
thymus
stimulates the thyroid to synthesize and secrete its hormones
thyroid-stimulating hormone (TSH)
anterior pituitary
local hormones produced by many tissues and act on nearby cells
prostaglandins
response of an endocrine gland to a stimulus that moves hormone levels in the opposite (negative) direction
negative feedback
hormonal release from another endocrine gland
hormonal regulation
hormones that stimulate the activity of other endocrine glands
tropic hormones
hormone release stimulated by nerve impulses
neural regulation
located in diencephalon and secretes that stimulate or inhibit the release of pituitary hormones
hypothalamus
located in the diencephalon region and lies in the sella turcica of the sphenoid bone
pituitary gland
a stalk like structure that extends from the hypothalamus
infundibulum
allows hypothalamic hormones to travel directly to the anterior pituitary without traveling through the systemic circuit of blood flow
anterior lobe or adenohypophysis
how is the anterior lobe connected to the hypothalamus?
hypophyseal portal system
communicates with the hypothalamus by nerve impulses and regulates hormonal activity
posterior lobe = neurohypophysis
stimulates the adrenal cortex to secrete its hormones, especially cortisol
which hormone?
which gland?
adrenocorticotropic hormone (ACTH)
anterior pituitary
stimulates protein synthesis for muscle and bone growth, maintenance, and repair
which hormone?
which gland?
growth hormone (GH)
anterior pituitary
stimulates the thyroid gland to secrete its hormones, especially thyroxine
which hormone?
which gland?
thyroid-stimulating hormone (TSH)
anterior pituitary