Endocrine Flashcards
Disease characterized by excessive urine production, can reach 20 litres(about 5 gallons) per day, and intense thirst
Diabetes Insipidus
What key component of the pancreas is used to treat diabetes insipidus?
Insulin
Chemical messengers secreted by endocrine glands
Hormones
Hormones can affect:
Growth, development, energy metabolism, muscle and fat distribution, sexual development, fluid and electrolyte balance, inflammation, and immune responses
Endocrine Glands include:
Pituitary, Thyroid, Parathyroid, Adrenal, Endocrine Pancreas and Gonads(Ovaries and Testes) Glands
Hormones are composed of either _______ or _______
Proteins or Amino Acids
Most Glandular activity is controlled by the ___________
Pituitary Gland(Master Gland)
The pituitary gland is controlled by the _________, the homeostatic center of the body and part of the central nervous system
Hypothalamus
Secreted when blood sugar levels rise
Insulin
Works antagonistically to insulin and is released when the blood sugar level falls below normal
Glucagon
When the level of hormone is adequate, its further release is stopped via ________________
Negative-Feedback Mechanism
The pituitary gland, located at the base of the brain is also known as the:
Hypophysis
Anterior lobe of the pituitary gland
Adenohypophysis
Posterior lobe of the pituitary gland
Neurohypophysis
Stalk connecting the pituitary gland to the floor hypothalamus
Infundibulum
The six major hormones produced by the anterior pituitary that control the function of other endocrine glands collectively
Tropic Hormones
The hormones produced in and stored in the posterior pituitary
Antidiuretic Hormone(ADH), Oxytocin
Also known as somatotrophin, affects all parts of the body by promoting growth of tissues and bones(especially before puberty), produced in anterior pituitary
Growth Hormone(GH)
Controls hormone secretion of the thyroid gland, without this hormone the thyroid gland stops functioning, produced in anterior pituitary
Thyroid-Stimulating Hormone(TSH)
Inner part of adrenal gland
Adrenal Medulla
Outer part of adrenal gland
Adrenal Cortex
Regulates adrenal glands by stimulating the release of adrenal cortex hormones, produced in anterior pituitary
Adrenocorticotropic Hormone(ACTH)
Stimulates egg and sperm production, produced in anterior pituitary
Follicle-Stimulating Hormone(FSH)
Stimulates the ovaries to produce estrogen and progesterone and stimulates the testes to produce testosterone, produced in anterior pituitary
Luteinizing Hormone(LH)
A surge in LH is the signal for
Ovulation
Anterior Pituitary regulates sexual development and functions by releasing hormones such as FSH and LH, known as:
Gonadotropins
Stimulates breast development and formation of milk during pregnancy and after delivery, produced in anterior pituitary
Prolactin
Also known as vasopressin. Stimulates water absorption in the kidneys and therefore has an antidiuretic effect(depressing the formation of urine), produced in posterior pituitary
Antidiuretic Hormone(ADH)
Stimulates uterine contractions, triggers release of milk from the breasts, and causes ejection of prostate gland secretions, produced in posterior pituitary
Oxytocin
The thyroid cartilage is also known as:
Adam’s Apple
The connecting strip of the two lobes of the thyroid gland anterior to the trachea is also known as:
Isthmus
The two iodine-containing hormones are known as:
Thyroid Hormone(TH)
The principle thyroid hormone, T_4 is known as:
Thyroxine
The thyroid hormone T_3 is known as:
Triiodothyronine
Effect of Thyroid Hormone on basal metabolic rate/temperature regulation
Increases basal metabolic rate and body temperature
Effect of Thyroid Hormone on carbohydrate/lipid/protein metabolism
Promotes glucose catabolism; mobilizes fats; essential for protein synthesis; enhances synthesis of cholesterol by the liver
Effect of Thyroid Hormone on nervous system
Promotes normal development of the nervous system in fetus and infants; normal nervous system function in adults
Effect of Thyroid Hormone on cardiovascular system
Promotes normal functioning of the heart
Effect of Thyroid Hormone on muscular system
Promotes normal muscular development and function
Effect of Thyroid Hormone on skeletal system
Promotes normal growth and maturation of skeleton
Effect of Thyroid Hormone on gastrointestinal system
Promotes normal gastrointestinal motility; increases secretion of digestive juices
Effect of Thyroid Hormone on reproductive system
Promotes normal reproductive functions in females
Effect of Thyroid Hormone on integumentary system
Promotes normal hydration and secretory activity of skin
Endocrine gland located on the neck region
Thyroid Gland
Four tiny endocrine glands located posterior to the thyroid gland
Parathyroid Gland
Hormone secreted by the parathyroid gland
Parathyroid Hormone(PTH)/Parathormone
The parathyroid gland regulates what two minerals in the human body?
Calcium and Phosphate
This mineral is essential in blood-clotting and plays a significant role in muscle contractions and heart tone
Calcium
PTH prevents calcium from getting diposed in _______ by telling the ______ to reabsorb it
Urine, Kidneys
PTH increases the activity of ______, allowing calcium release into the blood stream
Osteoclasts
The outer part of the adrenal gland is known as the ___________
Adrenal Cortex
The inner part of the adrenal glands is known as the __________
Adrenal Medulla
What do the adrenal cortex secrete?
Corticoids(Corticosteroid Hormones)
How many different types of Corticoids are there?
3
What kind of Corticoid regulates salt balance?
Mineralcorticoids
What principle corticosteroid hormone is involved in sodium retention and potassium secretion by the kidneys?
Aldosterone
What kind of Corticoid regulates carbohydrate, lipid and protein metabolism?
Glucocorticoids
What is the principle glucocorticoid hormone?
Cortisol(Hydrocortisone)
What type of Corticoid has two forms, a male and a female form?
Sex Hormones
What are the male sex hormones called?
Androgens
What are the female sex hormones called?
Estrogens
Secreted by the adrenal medulla, what hormone causes vasodilation and increases heart rate, blood pressure and respiration?
Epinephrine