Endocrine System Flashcards
endo means
inside
krinein means
to shift and filter (when you filter you seperate)
what is endocrine system?
endocrine is the organs that secrete hormones that is release in bloodstream
9 endocrine Glands?
P- ituitary A-drenals T-hyroid P-ancreas O-varies T-hymus T-Testis P-arathyroid P-ineal Gland
Posterior part of thyroid?
Parathyroids
aka master glands
Pituitary Gland
2 Function of pancreas
endocrine - secretion inside- insulin and glucagon
exocrine- digestive enzymes
on top of the kidneys: aka suprarenal
Adrenals
absorbs the glucose
insulin
release the stored glucose
glucagon in liver
produces and secretes thymosin
thymus gland
4 chemical messengers
autocrine, paracrine, neurotransmitter, endocrine
allow cell communicate to each other
chemical messenger
body fluid
ions, hormones, substances are being regulated
humoral regulation
allergic
paracrine
composed of endocrine glands and specialized endocrine cells located throughout the body
endocrine system
T or F Hormones travels through the general blood circulation to the target tissue or effectors
T
T or F Target tissue have receptors for a specific hormone
T
T or F Hormones produce a particular response in the target tissues
T
2 types of hormones in endocrine
WSH
LSH
most common hormone contains the protein, amino acid, peptides
WSH
Hormone that has steroids and eicosanoids
LSH
These are examples of Hormone? Growth hormone, Antidiuretic, prolactin
WSH
These are examples of Hormone? LH, FSH, Androgens
LSH
T or F - Hormone release can also be under neural control
T
Blood-borne chemicals can directly stimulate the release of some hormone
Humoral Stimuli - this circulates in the blood
action potential and neurons releases in?
Neurotransmitter and then to the Synapses
T or F Hormone release can’t be controlled by other hormones
F- Hormone release can control by other hormones
3 types of stimuli that can stimulate or inhibit release?
Humoral, Neural, Hormonal Regulations
Stimulates Osteoclast, bone destroyer
Parathormone or Parathyroid Hormone
When Blood Ca++ is Low?
Parathormone is release to Osteoclast
T or F when Osteoclast is released the calcium in blood DECREASES
F- Blood Calcium increases because of the bone being destroyed
When Blood Ca++ is High?
No PTH secretion that’s why Ca++ in Blood DECREASES
Does Posterior Pituitary gland create its own hormone?
no- but they have hormone given by the hypothalamus
Controls the pituitary gland
Hypothalamus
Neurons in the hypothalamus releases stimulatory hormones called?
Release Hormones
Pathway of Hormones?
E-ndocrine
H-ormone
T-arget cell
T-arget tissue
near sensory nerve anesthesia
Local Anesthesia
T or F
companion hormones performs and opposite function
T
What hormone does adrenal cortex secretes?
Aldosterone, cortisol, androgens
Hormone released to lower the heart atria?
atrial natriuretic peptide
T or F thyroid hormones can control their own blood levels
T
2 major mechanism maintain hormone levels in the homeostatic range?
Positive and Negative Feedback
hormone regulation by tropic hormone action
Positive Feedback
Hormone secretion is inhibited by the hormone itself?
Negative Feedback
Tropic Hormone is released by
Anterior PG
receptor molecule where hormone binds
receptor site
Receptor site allowing only one hormone to bind to it
specificity
hormone that can bind to a “family” of receptors that are structurally similar
epinephrine
Hormones bind to nuclear receptors
Lipid Soluble Hormone
Hormones bind to membrane bound receptors
Water Soluble Hormone
small gland in brain that is controlled by the hypothalamus
Pituitary gland
2 regions of pituitary Gland
Anterior and the Posterior