Chapter-7 The Endocrine System-- Endocrinology Flashcards
What is the overall function of the endocrine system?
For the human body, the endocrine system serves the function of sending signals to keep all the body’s many functions in balance (homeostasis).
How can the endocrine system be broken down?
1) the signal senders - the main signal senders are the endocrine glands, which include the hypothalamus, pituitary, thyroid, parathyroid, adrenal, pancreas, and gonads (ovaries and testicles).
2) signals they send- endocrine glands specifically send chemical signals to different parts of the body/ chemical signals, which are hormones, generally cause slower, subtler changes than the nervous system, which uses electric signals.
3) the signals’ outcomes
How do endocrine signals travel generally through the body?
Signals travel through the rest of the body via the bloodstream, but only the intended cells in the body respond to these hormonal signals.
How do intended cells respond to hormones?
The cells are keyed with receptors that fit with the hormone- just like two matching puzzle pieces.
What does the hormone signal to the intended cell to do?
The hormone then signals the cell to perform a desired job, such as releasing another hormone, releasing or taking in nutrients, or changing the speed at which the body makes certain proteins.
What are some of the end results of the endocrine system?
The end result is that the endocrine system can adjust the levels of nutrients in the blood, excrete excess nutrients, help the body respond to its environment, and direct growth and development.
What are the signal makers and senders of the endocrine system called?
Glands.
These are located throughout your body, including in your brain, in the area above your kidneys, in your genitals, and in the front part of your neck
aden/o
roots
Def: gland
Ex: adenoma, adenopathy
Notes: This root refers to any gland. Since the endocrine system has a lot of glands, the term comes up often.
adren/o
roots
Def: adrenal gland
Ex: adrenarche
Notes: The name adrenal describes where this gland is located in the body. It literally means “on the kidney” - ad (to, on) + renal (kidney).
adrenal/o
roots
Def: adrenal gland
Ex: adrenalitis
Notes: The name adrenal describes where this gland is located in the body. It literally means “on the kidney” - ad (to, on) + renal (kidney).
cortic/o
roots
Def: the outer surface
Ex: corticotropic, adrenocorticohyperplasia
Notes: The root cortico and the noun cortex both come from a Latin word meaning “bark” or “husk.” It refers to the outer surface of any organ.
gonad/o
roots
Def: gonads (sex organs)
Ex: gonadopathy, gonadogenesis
Notes: Although it is sometimes used interchangeably with the term testicles, the term gonad actually refers to the sex organs of both men and women. Male gonads = testicles, Female gonads = ovaries.
You can easily recall the term gonad by remembering that its first three letters, gon, are from the same Greek root that places gen in the word genesis, which means “to create.” That makes sense because the gonads are the organs that aid in procreation.
pancreat/o
roots
Def: pancreas
Ex: pancreatitis, pancreatolith
Notes: The term pancreas comes from two Greek words: pan (all) and kreas (flesh). The reasoning for this has long been debated; some people think the name stuck because of the organ’s fleshy consistency.
If you ever find yourself tempted by the word sweetbreads on a menu, think carefully before ordering. That’s the term used by chefs to mean “cooked pancreas.”
pituitar/o
roots
Def: pituitary gland
Ex: hyperpituitarism
Notes: The word pituitary comes from a Latin word meaning “mucus,” because the Romans believed that the pituitary gland channeled mucus from the brain to the nose.
hypophys/o
roots
Def: pituitary gland
Ex: hypophysitis
Notes: The other root, hypophyso, comes from the Greek words hypo (under) +
physis (growth) and refers to the appearance and location of the pituitary gland, a pea-sized gland located under the brain right behind the eyes. It looks a little like an abnormal growth underneath the brain - but it is a critical part of the endcocrine system.
thym/o
roots
Def: thymus
Ex: thymoma, thymectomy
Notes: The thymus is an organ found in the upper chest, under the sternum, and in front of the heart. Its name is derived from the name of the herb thyme. To those who first discovered it, the organ looked like a bunch of thyme.
thyr/o
roots
Def: thyroid
Ex: thyrotoxin
Notes: The word thyroid comes from the Greek word thyros, meaning “shield.”
Thyro (shield) + oid (resembling) = the gland resembling a shield. It really does look like a shield spread out over the throat, doesn’t it?
thyroid/o
roots
Def: thyroid
Ex: thyroidectomy
gluc/o
roots
Def: sugar
Ex: glucocorticoid
Notes: Three common types of sugar are sucrose, glucose, and fructose. Sucrose is a complex molecule made up of glucose and fructose.
Glucose and fructose have the same chemical composition, but different molecular structures. For some reason, glucose (which requires insulin to break it down) is the universal fuel of all living things and is also used in brain functions. Neurologists often use glucose consumption as an indicator of brain activity. When the brain lacks glucose, certain mental functions, like self-control and decision making, become more difficult.
glucos/o
roots
Def: sugar
Ex: glucosuria
glyc/o
roots
Def: sugar
Ex: hypoglycemia
crin/o
roots
Def: to secrete
Ex: endocrine, exocrine
Notes: Endocrine means “to secrete internally”; it refers to chemicals secreted into the bloodstream. The opposite of this is exocrine, which means “to secrete externally’’
and refers to chemicals secreted through ducts to the surface of an organ. Examples of this include sweat glands and salivary glands. Next time you find yourself sweating through a workout or drooling over some food, you can say that you’re having an excessive exocrine response.
hormon/o
roots
Def: hormone
Ex: hormonopoesis
Notes: From the Greek word meaning “to rush” or “push,” hormones are chemicals secreted by certain glands for the purpose of stimulating an organ or part of the body to do something.
ket/o
roots
Def: ketone body
Ex: ketosis, ketogenic
Notes: A ketone body is a substance that increases in the blood as a result of faulty carbohydrate metabolism. Ketone bodies are toxic chemicals that build up in the blood and are detectable in the urine. When there isn’t enough insulin in the blood, the body cannot use sugar for energy, so it breaks down fat instead. The presence of ketone bodies is normally a sign of untreated or poorly controlled diabetes. Oddly enough, although ketones can be secreted in the urine, the primary way the body gets rid of them is through the lungs, giving sufferers fruity-smelling breath.
-tropin
suffixes for secretions, chemicals, and blood work
Def: stimulating hormone
Ex: thyrotropin, gonadotropin
Notes: If a term has the suffix -tropin. it refers to a hormone that has a stimulating effect on a target organ. The suffix comes from a Greek word meaning “to turn”– perhaps because it turns the target organ on and tells it to start working.
-Tropin has the same root as the word trophy. In ancient Greece, a trophy was a monument built on a battlefield to mark the spot where the battle turned in the victor’s favor
-emia
suffixes for secretions, chemicals, and blood work
Def: blood condition
Ex: glycemia, calcemia
Notes: Because the endocrine system deals with internal secretions, blood analysis (which is, of course, analysis of a secretion of the body) is usually the best way to detect problems
-uria
suffixes for secretions, chemicals, and blood work
Def: urine condition
Ex: polyuria
Notes: Substances in the urine can be useful clues in diagnosing endocrine problems.
adenalgia
adrenal
subjective
Def: pain in a gland
Pron: AD-eh-NAL-jah
Word Analysis
aden/ algia
gland/ pain
adrenal virilism
adrenal
subjective
Def: development of male secondary sexual characteristics caused by excessive secretion of the adrenal gland
Pron: ad-REE-nal VIR-il-izm
Word Analysis
adrenal viril/ ism
adrenal man/ condition
adrenarche
adrenal
subjective
Def: the beginning of adrenal secretion (at puberty)
Pron: AD-ren-AR-kay
Word Analysis
adren/ arche
adrenal/ beginning
hirsutism
adrenal
subjective
Def: excessive growth of facial and body hair in women
Pron: HIR-soo-tizm
From Latin, for “shaggy”
amenorrhea
gonad
subjective
Def: lack of menstrual flow
Pron: ah-MEN-oh-REE-ah
Word Analysis
a/ meno/ rrhea
no/ menstrual/ flow
gynecomastia
gonad
subjective
Def: development of breast tissue in males
Pron: GAI-neh-koh-MAS-tee-ah
Word Analysis
gyneco/ mast/ ia
woman/ breast/ condition
hypergonadism *
gonad
subjective
Def: a condition in which there is excessive secretion of the sex glands
Pron: HAI-per-GOH-nad-izm
Word Analysis
hyper/ gonad/ ism
over/ gonad/ condition
hypogonadism
gonad
subjective
Def: a condition in which there is undersecretion of the sex glands
Pron: HAI-poh-GOH-nad-izm
Word Analysis
hypo/ gonad/ ism
under/ gonad/ condition
menarche
gonad
subjective
Def: the beginning of first menstruation
Pron: MEN-ar-kee
Word Analysis
men/ arche
menstrual/ beginning
thelarche
gonad
subjective
Def: the beginning of breast development
Pron: thee-LAR-kay
Word Analysis
thel/ arche
breast/ beginning
hypoglycemic
pancreas
subjective
Def: pertaining to low blood sugar
Pron: HAI-poh-glai-SEE-mik
Word Analysis
hypo/ glyc/ em/ ic
under/ sugar/ blood/ pertaining to
pancreatalgia
pancreas
subjective
Def: pain in the pancreas
Pron: PAN-kree-ah-TAL-jah
Word Analysis
pancreat/ algia
pancreas/ pain
polydipsia
pancreas
subjective
Def: excessive thirst
Pron: PAW-lee-DIP-see-ah
Word Analysis
poly/ dips/ ia
excessive/ thirst/ condition
Note: You might expect hyperdipsia, but the term uses poly instead. The reason is because this word is not first a medical word but the ancient Greek term for “excessively thirsty.” In Greek, poly can mean “excessive” as well as “many.”
polyphagia
pancreas
subjective
Def: excessive eating
Pron: PAW-lee-FAY-jah
Word Analysis
poly/ phag/ ia
excessive/ eat/ condition
polyuria
pancreas
subjective
Def: excessive urination
Pron: PAW-lee-YOO-ree-ah
Word Analysis
poly/ uria
excessive/ urine condition
acromegaly
pituitary
subjective
Def: abnormal enlargement of the extremities
Pron: AK-roh-MEH-gah-lee
Word Analysis
acro/ megaly
extremities/ abnormal englargement
Note: The term acro mean “top” or “high,” as in acrophobia, the fear of heights, or it can mean “the end” or “extremity,” as it does here.
galactorrhea
pituitary
subjective
Def: discharge of milk
Pron: gah-LAK-toh-REE-ah
Word Analysis
galacto/rrhea
milk/ discharge
Note: The word galaxy comes from this root. Our galaxy is called the Milky Way because early stargazers thought it looked like someone sprayed milk in the sky.
pituitary dwarfism
pituitary
subjective
Def: abnormally short height caused by undersecretion of growth hormone from the pituitary gland
Pron: pih-TOO-ih-TER-ee DWAR-fizm
Word Analysis
pituitary dwarfism
pituitary gigantism
pituitary
subjective
Def: abnormally tall height caused by oversecretion of growth hormone from the pituitary gland
Pron: pih-TOO-ih-TER-ee jai-GAN-tizm
Word Analysis
pituitary gigantism
exophthalmos
thyroid
subjective
Def: protrusion of the eyes out of the eye socket
Pron: EKS-of-THAL-mohs
Word Analysis
ex/ ophthalmos
out/ eye
goiter
thyroid
subjective
Def: swollen thyroid gland
Pron: GOY-ter
Word Analysis
from Latin, for “gutter” (meaning “throat”)
Note: The most common caused of goiter is iodine deficiency. The easy solution to this, and to other health problems caused by low iodine, is to add iodine to salt.
thyrocele
thyroid
subjective
Def: another name for goiter
Pron: THAI-roh-seel
Word Analysis
thyro/ cele
thyroid/ tumor
thyromegaly
thyroid
subjective
Def: enlargement of the thyroid
Pron: THAI-roh-MEH-gah-lee
Word Analysis
thyro/ megaly
thyroid/ enlargement
thyroptosis
thyroid
subjective
Def: downward displacement (drooping) of the thyroid
Pron: THAI-rop-TOH-sis
Word Analysis
thyro/ ptosis
thyroid/ drooping condition
acidemia
blood and urine conditions
objective
Def: abnormal acidity of the blood
Pron: A-sih-DEE-mee-ah
Word Analysis
acid/ emia
acid/ blood condition
alkalemia
blood and urine conditions
objective
Def: abnormal alkalinity (opposite of acidity) of the blood
Pron: AL-kah-LEE-mee-ah
Word Analysis
alkal/ emia
alkali/ blood condition
calciuria
blood and urine conditions
objective
Def: calcium in the urine
Pron: CAL-sih-YOO-ree-ah
Word Analysis
calci/ uria
calcium/ urine condition
chloremia
blood and urine conditions
objective
Def: increased chloride in the blood
Pron: klor-EE-mee-ah
Word Analysis
chlor/ emia
chloride/ blood condition
euglycemia
blood and urine conditions
objective
Def: good blood sugar
Pron: YOO-glai-SEE-mee-ah
Word Analysis
eu/ glyc/ emia
good/ sugar/ blood condition
glucosuria
blood and urine conditions
objective
Def: sugar in the urine
Pron: GLOO-koh-SOO-ree-ah
Word Analysis
glucos/ uria
sugar/ urine condition
hypercalcemia
blood and urine conditions
objective
Def: excessive calcium in the blood
Pron: HAI-per-kal-SEE-mee-ah
Word Analysis
hyper/ calc/ emia
over/ calcium/ blood condition
hypercholesterolemia
blood and urine conditions
objective
Def: excessive cholesterol in the blood
Pron: HAI-per-koh-LES-ter-aw-LEE-mee-ah
Word Analysis
hyper/ cholesterol/ emia
excessive/ cholesterol/ blood condition
Note: The term cholesterol breaks down as chole (bile) + stero (solid) + ol (substance) and means “a solid bile substance.” It gets the name because it was first discovered in gallstones.
hyperglycemia
blood and urine conditions
objective
Def: high blood sugar
Pron: HAI-per-glai-SEE-mee-ah
Word Analysis
hyper/ glyc/ emia
excessive/ sugar/ blood condition
hyperkalemia
blood and urine conditions
objective
Def: excessive potassium in the blood
Pron: HAI-per-kah-LEE-mee-ah
Word Analysis
hyper/ kal/ emia
over/ potassium/ blood condition
Note: The kal root comes from Latin word kalium, which means “potash.” The name comes from the fact that potassium is obtained by soaking ashes in water and then evaporating the liquid. This explains why the periodic table’s abbreviation for potassium is K. The name potassium is a Latinization of the words “pot ash.” Potassium really does mean “pot-ash-ium.”
hyperlipidemia
blood and urine conditions
objective
Def: excessive fat in the blood
Pron: HAI-per-lih-pih-DEE-mee-ah
Word Analysis
hyper/ lipid/ emia
excessive/ fat/ blood condition
hypernatremia
blood and urine conditions
objective
Def: excessive sodium in the blood
Pron: HAI-per-nah-TREE-mee-ah
Word Analysis
hyper/ natr/ emia
excessive/ sodium/ blood condition