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TEST 1 - Endocrine/Reproductive
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92
Anatomy
Undergraduate 4
02/27/2012

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Term
Thyroid gland is stimulated by
Definition
T.S.H. (thyrotrophin)
Term
What 3 hormones are secreted by the thyroid?
Definition
1. thyroxin
2. triiodothyronine
3. thyrocalcitonin
Term
3 functions of thyroid gland
Definition
1. hormone secretion
2. O2 metabolism an growth/development
3. Ca metabolism (decreases the amount of blood calcium)
Term
4 diseases of the thyroid gland
Definition
1. Cretinism
2. Myxedemia
3. Endemic Goiter
4. Graves Disease
Term
Cretinism (hypo/hyper?)
Definition
hypo secretion in children
underdeveloped brain and body
Term
Myxedemia (hyper/hypo?)
Definition
hypo secretion in adults
gland atrophies
Term
Endemic Goiter (hypo/hyper?)
Definition
hypo secretion
gland enlarges
obesity, lack of energy, drop in BMR
Term
Graves Disease (hypo/hyper?)
Definition
hyper secretion
increase in metabolism
overactive, skinny, excess heat/energy, neuromuscular irritability
Term
Parathyroid stimulated by
Definition
Ca levels in the blood
Term
What hormone is secreted by the parathyroid?
Definition
P.T.H
Term
2 functions of the parathyroid
Definition
1. increases the amount of blood calcium
2. decreases the amount of blood phosphorus
Term
Hypo disease of parathyroid
Definition
low Ca level
neuromuscular spasms
twitch sustained contraction
Term
Hyper disease of parathyroid
Definition
high Ca level
brittle bones
susceptibility to bone breakage
Term
Adrenal cortex contains these 2 glands
Definition
1. golmerular
2. fasicular
3. reticular
Term
Glomeruler stimulated by (3)
Definition
1.levels of potassium in extracellular fluid
2. decrease in blood volume or Na deficiency
Term
Fascicular/Reticular stimulated by
Definition
A.C.T.H
Term
Hormones secreted by glomerular
Definition
mineralo-corticoids like aldosterone
Term
Hormone secreted by fasicular
Definition
glucocortoids like cortisol
Term
Hormone secreted by reticular (3)
Definition
1. some glucocortoids/sex hormones
2. testosterone and other androgens
3. estrogen/progesterone
Term
Functions of glomerular
Definition
reabsorption of h20 and Na ions
excretion of potassium and hydrogen ions
Term
Functions of fasicular
Definition
regulates fat, protein, and carb metabolism
Term
Functions of reticular
Definition
amount secreted under normal circumstances is so low it has no signficance
Term
Diseases of the Adrenal Cortex
Definition
Addison's disease
Cushing's Syndrome
Adrenal Virilism
Term
Addison's Disease
Definition
low levels of h20 and Na
low blood pressure
dehydration
Term
Cushing's Disease
Definition
water retention
redistribution of fat from limb to trunk
hyperglycemia and fat catabolism
Term
Adrenal Virilism
Definition
tumor on gland results in higher than normal level of androgen secretion
(early male characteristics in both sexes)
Term
Adrenal Medulla stimulated by
Definition
stress -> impulses received by hypothalamus -> sympathetic nervous system -> increase in secretion by medulla
Term
Adrenal medulla secretes both...
Definition
adrenaline and noradrenaline
Term
Functions of Adrenal Medulla (6)
Definition
1. constrict skin and mucus membrane
2. dilate blood vessels
3. increase heart rate/bp
4. inhibit bronchial muscles
5. increase skeletal muscle contractions
6. dilate pupils
Term
Posterior lobe of pituitary stimulated by
Definition
1. oxytocin
2. Vasopressin (A.D.H)
Term
Site of production of oxytocin/vasopressin...
Definition
hypothalamus
Term
A.D.H =
Definition
Anti Diuretic Hormone
Term
3 Functions of Oxytocin
Definition
1. initiates labor
2. stimulates milk ejection
3. stimulates smooth muscle contractions
Term
Why is oxytocin given after labor?
Definition
to prevent hemorrhage
Term
Low levels of A.D.H cause
Definition
diabetes instipidus
Term
What is Diabetes Instipidus?
Definition
too much water voided in urine
not enough reabsorption by kidneys
Term
Anterior lobe of pituitary stimulated by
Definition
hypothalamus via releasing factors
Term
9 Hormones secreted by anterior lobe of pituitary
Definition
1. T.S.H
2. A.C.T.H
3. S.T.H
4. Gonadotrophic hormones
5. FSH
6. LH
7. ICSH
8. LTH
9.MSH
Term
Function of T.S.H
Definition
stimulate thyroid activity
Term
Function of A.C.T.H
Definition
stimulate adrenal cortex secretion of glucocorticoids
Term
Function of STH (growth hormone)
Definition
stimulate protein anabolism/fat catabolism
Term
Function of FSH
Definition
stimulates development of follicle and egg
stimulates spermatogenesis and seminiferous tubules
Term
Function of ICSH
Definition
stimulates hormone secretion by interstitial cells of testes
Term
Function of LTH
Definition
stimulates milk production by alveoli
helps maintain corpus luteum
Term
Function of MSH
Definition
controls skin color
Term
TSH =
Definition
thyroid stimulating hormone
Term
ACTH =
Definition
adrenocorticotrophic hormone
Term
FSH =
Definition
follicle stimulating hormone
Term
ICSH
Definition
interstitial cell stimulating hormone
Term
LH =
Definition
Luteinizing hormone
Term
MSH =
Definition
melanocyte stimulating hormone
Term
Diseases of anterior lobe of pituitary
Definition
1. Dwarfism
2. Simmond's Disease
3. Gigantism
4. Acromegaly
Term
Dwarfism
Definition
STH deficiency in child
Term
Simmond's Disease
Definition
emaciation, premature aging, hypergylcemia
Term
Gigantism
Definition
STH excess in child
Term
Acromegaly
Definition
enlargement of bones of jaw, forehead, fingers, and toes
Term
Excess levels of MSH cause
Definition
darkening of the skin
Term
Specific gland of pancreas
Definition
islets of langerhans
Term
Pancreas stimulated by
Definition
blood levels of glucose
Term
2 hormones secreted by pancreas
Definition
1. insulin in beta cells
2. glucagon in alpha cells
Term
function of insulin
Definition
decreases blood glucose by increasing cell metabolism and converting to glycogen
Term
function of glucagon
Definition
increases blood glucose by breakdown of glycogen
Term
Diseases of pancreas
Definition
diabetes mellitus
hypogylcemic shock
Term
diabetes mellitus
Definition
low insulin level
Term
hypoglycemic shock
Definition
high levels of glucose in blood/urine
frequent urination
thirst, weakness, coma, death
overdose of insulin
Term
thymus stimulated by
Definition
thymosin
Term
thymus produces
Definition
lymphocytes and plasma cells or anti-body formation/immunity
Term
pineal body stimulated by
Definition
changes in light sensitivity
Term
hormone secreted by pineal body
Definition
melatonin
Term
functions of pineal body
Definition
photoreceptor qualities
plays role in regulating menstrual cycle
Term
ovaries stimulated by
Definition
FSH
LH
Term
ovaries secrete the 2 hormones
Definition
estrogen/progesterone
Term
testes stimulated by
Definition
FSH
ICSH
Term
testes secrete
Definition
androgens (testosterone)
Term
functions of the endocrine system
Definition
-regulates, integrates, and coordinates all body activities
-homeostasis
-chemical secretion-target control
Term
Nervous system charactistics
Definition
nerve fibers react slowly
longer response time
lasts longer
Term
Endocrine system characteristics
Definition
endocrine secretes/glands
response is quick
lasts shorter
Term
trophic gland is the controller for
Definition
specific target
Term
trophic gland secretes a __________ through the _________ then to the ________ and finally the _______ is secreted
Definition
trophic hormone
blood
target
hormone
Term
increased secretions of trophic hormone will result in
Definition
increased secretions of target hormones
Term
increased secretions of target hormone will result in
Definition
decreased secretions of trophic hormone
Term
decreased secretions of trophic hormones will result in
Definition
decreased secretions of target hormone
Term
decreased secretions of target hormones will result in
Definition
increased secretions of trophic hormone
Term
the thyroid gland is considered a _____ land
Definition
bilobe
Term
isthmus gland allows the
Definition
2 lobes to function as whole
Term
follicles composed of single layer of
Definition
simple cuboidal epithelium
Term
substance made up of very large particles
Definition
colloid
Term
colloid is combination of 3 things:
Definition
1. thyroid hormone
2. iodine
3. protein
Term
what does the thyroid store in the body?
Definition
iodine
Term
glycogenolysis
Definition
breakdown of glycogen into glucose
Term
exothalmic goiter
Definition
protrusion of the eyeball
Term
what plays a role in calcium metabolism?
Definition
parathyroids
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