Endocrine System Flashcards
Second great controlling center
Endocrine System
Loops that act to oppose the stimulus
Negative Feedback Loop
Influence target cells at another location in the body
Hormones
Seven Major Endocrine Glands
Hypothalamus, Pituitary Gland, Thyroid, Parathyroid, Adrenal Glands, Pancreas, Gonads
Eight other organs that secretes hormone
Heart, Pineal gland, Thymus Gland, Kidney, Stomach, Small Intestine, Adipocytes, Placenta
How many hormones does the hypothalamus release?
Eight (8)
Inhibits release of growth hormone
Growth hormone inhibitory hormone (GHIH) or Somatostatin
Stimulates release of adrenocorticotrophic hormone
Corticotropin-releasing hormones (CRH)
Inhibits the release of prolactrin
Dopamine or Prolactin inhibiting factor
Stimulates release of growth hormone
Growth hormone releasing hormone (GHRH)
Stimulates secretion of thyroid-stimulating hormone and prolactin
Thyrotropin-releasing hormone (TRH)
Stimulates release of luteinizing hormone and follicle-stimulating hormone
Gonadotropin-releasing hormone (GnRH)
Hormone for milk ejection and uterine contraction
Oxytoxin
The hormone that increases water reabsorption by the kidneys and causes vasoconstriction and increased blood pressure
ADH or Vasopressin
Location of pituitary gland
Sella Turcica
Other name of anterior pituitary
Adenohypophysis
Other name of pituitary gland
Hypophysis
“Somatrortopic hormone”
Growth Hormone
Hormones that promotes mammary gland development
Prolactin
Hormones that stimulates melanin production
Melanocytes Stimulating Hormone
Hormones that cause growth of follicles in the ovaries and sperm maturation in Sertoli cells of testes
Follicle Stimulating Hormones
Other name of posterior pituitary
Neurohypophysis
Origin of anterior pituitary gland
Pharyngeal epithelium
Hormones that stimulate synthesis and secretion of thyroid hormones
Thyroid Stimulating Hormone
Hormones that stimulate testosterone synthesis in Leydig cells of testes; stimulates ovulation, the formation of corpus luteum, and estrogen and progesterone synthesis in ovaries
Luteinizing Hormone
Origin of posterior pituitary gland
Neural tissue
Hormones that stimulate protein synthesis and overall growth of most cells and tissues
Growth Hormone
Hormones that stimulate synthesis and secretion of adrenocortical hormones (cortisol, androgens, and aldosterone)
Adrenocorticotropin Hormone
Two hormones that is stored and released in posterior pituitary gland
ADH and Oxytocin
Hormones that promotes deposition of calcium in the bones and decreases extracellular fluid calcium ion concentration
Calcitonin
Hormones increase the rates of chemical reactions in most cells, thus increasing body metabolic rate
T3-T4 Hormones
T4
Thyroxine
Slow onset thyroid hormone
T4 (Thyroxine)
Slow onset thyroid hormone
T4 (Thyroxine)
Thyroid hormone that acts on peripheral tissue
T3 (Triiodothyronine)
What thyroid hormones is 4x more potent
T3 (Triiodothyronine)
Fast onset thyroid hormone
T3 (Triiodothyronine)
Thyroid gland produced T3 in how many percentage?
7%
Thyroid hormone that has longer duration of action
T4
Thyroid gland produced T4 in how many percentage?
93%
Thyroid hormone that has short duration of action
T3
How does T4 functions?
It needed to be converted to T3 in peripheral tissue
Hormones that promote and development of the body and SNS
T3-4
Four small pieces on the posterior side of thyroid
Parathyroid Gland
Hormones that control serum calcium ion concentration by increasing calcium absorption by the gut and kidneys and releasing calcium from bones
Parathyroid Hormone (PTH)
Excess activity of parathyroid hormone can produce what condition?
Hypercalcemia
The visceral organ that has endocrine and exocrine function
Pancreas
Hormone formed by alpha cells
Glucagon
Hormones that promotes glucose entry in many cells, and in this way controls carbohydrate metabolism
Insulin
What cells forms insulin?
Beta cells
Hormones that increase the synthesis and release of glucose from the liver into the body fluids
Glucagon
What cells forms somatostatin?
Delta cells
If there is a decrease in glucose in the gland, what hormones get activated?
Glucagon
Hormones that inhibits secretion of glucagon and insulin
Somatostatin
Two small glands located superior to the kidney
Adrenal Gland
Three zones of adrenal cortex
Zona Glomerulosa, Zona Fasciculata, Zona Reticularis
Hormones that have multiple metabolic functions for controlling the metabolism of proteins, carbohydrates, and fats; also has anti-inflammatory effects
Cortisol
Hormones that increase renal sodium reabsorption, potassium secretion, and hydrogen ion secretion
Aldosterone
What hormones produced in Zona Reticularis?
Androgen
What hormones produced in Zona Fascicularis?
Cortisol
Adrenocortical hormones that has affect the electrolytes of the extracellular fluids, especially sodium and potassium
Minerocorticoids
What hormones produced in Zona Glomerulosa?
Aldosterone
Adrenocortical hormones that has an effects that increase blood glucose concentration.
Glucocorticoids
A very potent hormone that accounts for about 90 percent of all mineralocorticoid activity
Aldosterone
A very potent hormone accounts for about 95 percent of all glucocorticoid activity
Cortisol
Hormones that affect pubic and axillary growth
Androgen
“Stress hormone”
Cortisol
Cortisol shifts glucose to what metabolism?
Fat Metabolism
Two hormones in adrenal medulla that has same effects as sympathetic stimulation
Norepinephrine, Epinephrine
Hormones that promotes development of male reproductive system and male secondary sexual characteristics
Testerone
Hormones that stimulate secretion of “uterine milk” by the uterine endometrial glands and promotes the development of secretory apparatus of breasts
Progesterone
Hormones that promotes growth and development of the female reproductive system, female breasts, and female secondary sexual characteristics
Estrogen
Hormones that cause cervical dilation
Relaxin
Hormones released in the heart
Atrial natriuretic peptide (ANP)
Hormones released in Adipocytes
Leptin
Where does secretin and cholecystokinin released from?
Small Intestine
Three hormones released in Kidney
Renin, 1,25-Dihydroxycholecalciferol, Erythropoietin
Hormones that stimulates HCl secretion by parietal cells
Gastrin
Hormones that stimulates pancreatic acinar cells to release
bicarbonate and water
Secretin
Hormones that increase intestinal absorption of calcium and bone mineralization
1,25-Dihydroxycholecalciferol
Hormones that inhibits appetite, stimulates thermogenesis
Leptin
Hormones that stimulate gallbladder contraction and release of pancreatic enzymes
Cholecystokinin (CCK)
Gland that located posterior to sternum between and two lungs
Thymus Gland
Hormones that induces sleep and decrease fertility
Melatonin
Hormones that stimulates maturation of T-cells (cell-mediated immunity)
Thymosin
Hormones that catalyzes conversion of angiotensinogen to
angiotensin I
Renin
Where does HCG and Human somatomammotropin produced?
Placenta
Hormones that promotes the growth of corpus luteum and secretion of
estrogens and progesterone by corpus luteum
Human chorionic gonadotropin
Hormones that increases erythrocyte production
Erythropoietin
Hormones that probably helps promote development of some
fetal tissues as well as the mother’s breasts
Human somatomammotropin
Thymus Gland only function only until?
Puberty
3 causes of hypopituitarism
Genetic, Tumor, Infection
(+) Small with normal proportion body and intelligence
Dwarfism
(+) membranous bones thickens and soft tissue grows
Acromegaly
(+) increase production of ADH
SIADH (Syndrome of Inappropriate Anti-Diuretic Hormone)
Condition common with patients with hyperthyroidism develop some degree of protrusion of the eyeball
Exophthalmos
The most common form of hyperthyroidism,
is an autoimmune disease in which antibodies called thyroid-stimulating immunoglobulins (TSIs) form against the TSH receptor in the thyroid gland.
Graves’ Disease
Hyperthyroidism occasionally results from a localized adenoma (a tumor) that develops in the thyroid tissue and secretes large quantities of thyroid hormone.
Thyroid Adema
Cause of panhypopituitarism
Congenital or Tumor
Hyperpituitarism that happens during childhood
Gigantism
Hyperpituitarism that happens during adult
Acromegaly
Condition that is due to non-cancerous tumor that causes excessive prolactin
Prolactinoma
Condition that has decrease sodium concentration in the blood
Hyponatremia
Severe or Mild s/sx of SIADH: Hyponatremia
Severe
Severe or Mild s/sx of SIADH: anorexia
Mild
Severe or Mild s/sx of SIADH: weight gain
Severe
Severe or Mild s/sx of SIADH: confusion, coma, convulsion
Severe
Severe or Mild s/sx of SIADH: vomiting
Mild
Excessive Urination
Polyuria
Excessive Thirst
Polydypsia
Hyperthyroidism is initiated by autoimmunity against the thyroid gland, but immunity that destroys the gland rather than stimulates it.
Hashimoto’s disease
Hyperthyroidism caused by the increased mass of the thyroid due to a lack of iodine
Goiter
Function of iodine
Necessary in the of thyroid hormones
Two clinical manifestations of Hyperthyroidism
Myxedema and Creitism
(+) bagginess under the eyes and swelling of the face.
Myxedema
Clinical manifestation of hyperthyroidism is characterized especially by failure of body growth and by mental retardation
Creitism
When does creitism occur in an individual?
fetal life, infancy, or childhood
Condition due to the removal parathyroid glands
Hypoparathyroidism
Signs and Symptoms of Hypoparathyroidism
Tetany and Laryngeal Spasm
Spasm of these muscles obstructs respiration, which is the usual cause of death in tetany unless appropriate treatment is applied.
Laryngeal muscles
Condition due to the tumor at parathyroid gland and causes inappropriate, excess PTH secretion.
Primary Hyperparathyroidism
Primary Hyperparathyroidism occurs more frequently in what population?
Female (pregnancy and lactation stimulate the parathyroid glands and therefore predispose to the development of such a tumor)
The condition that has high levels of PTH occurs as a compensation for hypocalcemia rather than as a primary abnormality of the parathyroid glands.
Secondary Hyperparathyroidism
Two causes of Secondary Hyperparathyroidism
Vitamin D deficiency and Chronic Renal Disease
Nine symptoms of Hyperthyroidism
MEND SWIFT: Muscle weakness, high excitability, nervousness, diarrhea, increased sweating, weight loss, intolerance to heat, extreme fatigue but cannot sleep and hand tremors
Twelve symptoms of Hypothyroidism
FISHESSS GDDD: Fatigue, increased body weight, extreme somnolence, husky voice, edematous appearance, sluggishness, slow HR, scaly skin, constipation, decrease CO, decrease BV, decrease hair growth
(+) DM due to decrease ADH
Diabetes Insipidus
(+) DM: insulin-dependent
DM 1
(+) DM: insulin resistant
DM 2
The condition that results from an inability of the adrenal cortices to produce sufficient adrenocortical hormones, and this, in turn, is most frequently caused by primary atrophy or injury of the adrenal cortices
Addison’s Disease (Hypoadrenalism)
S/sm of Addison’s that occurs in sunlight exposure
Bronzing of skin
Four s/sx due to decrease aldosterone
Hyponatremia, mild acidosis, hyperkalemia, fatigue
Two s/sx due to decrease cortisol
Muscle weakness, fatigue
Hypersecretion by the adrenal cortex causes a complex cascade of hormone effects called what?
Cushing syndrome
(+) Excess ACTH secretion of APG
Cushing Disease
Six s/sx of Hyperadronalism
Buffalo torso, moon face, purple striae, hirsutism, acne, osteoporosis
(+) a small tumor of the zona glomerulosa cells occurs and secretes large amounts of aldosterone
Conn’s Syndrome (Aldosterinism)
Three s/sx of Aldosterinism
Hypokalemia, Alkanosis, Muscle Paralysis
(+) rapid development of secondary male sexual characteristic
Androgenital syndrome
(+) decrease estrogen
Polysistic ovaries syndrome
DM: hereditary
DM 1
Major important risk of DM
Obesity
DM: non-insulin dependent
DM 2
DM: metabolic acidosis
DM 1
Treatment of DM 2
Exercise, Caloric Restriction, Weight Reduction
Treatment of DM 1
Insulin Pumps
Delayed or loss of menstruation
Amenorrhea
Five s/sx of PCOS
Amenorrhea, Acne, Insuline resistant, Obesity, Vaginal Cramps
Radiographic diagnostic of PCOS
Ultrasound