The Endocrine System and Flower Essence Systems Flashcards
how does the nervous system work?
primarily as a direct effect mechanism, similar to the way electrical wires conduct electricity from point A to point B
the two control systems governing our physical body
nervous system and the endocrine system
These two systems have control over our muscles, moods, digestion, external/internal relations and more
how does the endocrine system work?
the second great regulatory system of the body.
It sends out coded messages that are usually read in some remote area of the body. These coded messages (hormones) can only be read by tissue that understands the same code (receptor sites).
what does the Pineal gland produce?
Melatonin
what does melatonin do?
Affects reproductive development and daily physiologic cycles
what does the Pituitary gland produce?
Growth hormone
Anti-diuretic hormone
Gonadotrophins
what are the effects of Growth hormone?
Controls growth of bones and muscles.
what are the effects of Anti-diuretic hormone?
Increases reabsorbtion of water in kidneys.
what are the effects of Gonadotrophins?
Control development of ovaries and testes.
what does the Adrenal gland produce?
Adrenaline
What does Adrenaline do?
Prepares the body for emergencies increases heart rate and rate and depth of breathing raises blood sugar level so more glucose is available for respiration, diverts blood from gut to limbs
what does the pancreas produce?
Insulin
Glucagon
what does Insulin do?
Converts excess glucose into glycogen in the liver.
what does Glucagon do?
Converts glycogen back to glucose in the liver.
what do the Ovaries produce?
Oestrogen
Progesterone
what does Oestrogen do?
Controls ovulation and secondary sexual characteristics
what does Progesterone do?
Prepares the uterus lining for receiving an embryo
what does the Testes produce?
Testosterone
what does Testosterone do?
Controls sperm production and secondary sexual characteristics
what does the Thymus produce?
Thymosin
what does Thymosin do?
Promotes production and maturation of white blood cells
limbic system
a concentration of emotional input around the pituitary
glands
- a number of aggregations of cells
- produce one or more specific chemical compounds that are passed to the outside of the gland
what do Exocrine glands do?
- secrete their substances (for example, sweat, lubricants like mucus and tears, and digestive juices) to a specific location, usually onto an external or internal body surface.
They do this by means of a duct (a tube which conveys liquid).
what do lacrimal glands do?
secrete tears onto the surface of the eye
what are the two types of glands?
exocrine
endocrine
what do salivary glands do?
secrete their substances into the mouth
what are the types of Exocrine glands?
- lacrimal
- salivary
- sebaceous
- digestive
- liver
- kidneys
- certain cells in the pancreas
what are Endocrine glands?
glands that are ductless and deliver their secretions (called hormones in this instance) directly into the bloodstream or lymphatic system
Via the bloodstream, the hormones travel to the organ or parts they are designed to affect
what are the types of endocrine glands?
- hypothalamus
- pituitary
- thyroid
- adrenals (also called the superadrenals)
- parathyroids
- thymus
- the Pancreatic Islets
- the pineal body
- the ovaries
- testes (and also the placenta, temporarily).
what is the Pituitary gland?
- The bi-lobed pituitary gland, about the size of a pea and located at the base of the brain, is the master gland of the endocrine system
- anterior lobe produces several hormones, all called tropic hormones because they act mainly on other endocrine glands — the thyroid, adrenals and sex glands
- activates and controls most of the other endocrine glands of the body, including the gonads. It is controlled by the hypothalamus and also by blood hormone levels
- posterior lobe secretes oxytocin & vasopressin
somatotropin
growth hormone
what does oxytocin do?
stimulates the smooth muscle of the uterus to contract during childbirth and stimulates the mammary glands during nursing after the baby is born
what does vasopressin do?
acts on the kidneys to control the body’s water content.
what is the thyroid?
bi-lobed, butterfly-shaped gland situated at the front of
the neck just below the larynx.
Its function is to absorb iodine and other materials from the bloodstream to produce a hormone called thyroxin
The metabolic action of thyroid hormones is extremely important during growth and development
what does thyroxin do?
controls the rate of metabolism of the body and maintains levels of heat production
what is cretinism?
a condition caused by a deficiency in thyroid hormones during
the early growing years
characterized by retardation and stunted physical growth
what is a goiter?
called called enlarged thyroid
caused by a dietary deficiency of the chemical element iodine
what are Parathyroids?
four small, round glands that are attached to the rear surface of the thyroid
They secrete a hormone called parathormone which is vital to the metabolism of calcium and phosphorus in the body.
what are the adrenal glands?
a pair of glands, one situated on top of each kidney. Each gland is about the size of a pea and is made up of two distinct parts, the inner and outer, with each part having a distinct function
outer part = cortex
inner part = medulla
what is the cortex?
outer part of the adrenal glands
- is essential to life, and secretes hormones called corticoids, which are important in protein and sugar metabolism.
- also secretes aldosterone, which regulates the amount of mineral salts excreted by the kidneys. Insufficient secretion of the adrenal cortex may result in low blood sugar and low blood pressure.
what is the medulla?
inner portion of the adrenal glands
- important though not essential to life, secretes a hormone called
epinephrine (also called adrenalin) and nor-epinephrine
- It is a neural transmitter stimulating the sympathetic nervous system, and does so at a much faster rate than usual when the individual is frightened or angered. Epinephrine increases the heart rate, dilates the bronchial tubes and raises blood pressure and blood sugar level. It prepares the individual for “flight or fight”