Term
| What is the function of endocrine system? |
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Definition
| regulation of body activities |
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Term
What does the endocrine system control? |
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Definition
- growth
- metabolism
- development
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Term
| What action does the endocrine system perform? |
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Definition
| chemical messengers called hormones |
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Term
| What is the function of endocrine glands? |
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Definition
| secrete hormones into blood stream |
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Term
| What does a hormone seek and do once they are in the blood stream? |
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Definition
| seeks a target cell or tissue and tells it what to do |
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Term
| What is the boss of the body? |
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Definition
|
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Term
| What is the strong arm/enforcer? |
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Definition
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Term
| What happens when hormones attach to the receptor site? |
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Definition
| they modify/change that cells activity |
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Term
| That are target cells or tissues? |
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Definition
| cells with receptor sites for a particular hormone |
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Term
| What are the 2 types of hormones? |
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Definition
- Non-steroid (protein)
- Steroid (lipid)
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Term
| Steroid hormones are a derivative of what? |
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Definition
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Term
| Non-steroid hormones are a derivative of what? |
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Definition
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Term
| Which type of hormone can be taken orally? |
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Definition
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Term
| Which type of steroids are too big to go through the cell membrane? |
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Definition
| non-steroid (protein) hormones |
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Term
| What happens during the first messenger? |
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Definition
| a non-steroid (protein) hormone attaches to a receptor site on the cell membrane. |
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Term
| What happens during the second messenger? |
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Definition
| a non-steroid (protein) hormone is activated by the cell. |
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Term
| Which hormone can go through the cell membrane and attaches to the nucleus causing a effect? |
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Definition
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Term
| Which type of hormone is slower? |
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Definition
|
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Term
| What is the primary control mechanism for hormone secretion? |
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Definition
| negative feedback mechanism |
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Term
| What does the endocrine system do? |
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Definition
| regulates body activity through hormones |
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Term
| When there is too little of a particular hormone in the blood stream, endocrine glands release LESS or MORE of their hormone? |
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Definition
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Term
| When there is too much of a particular hormone in the blood stream, endocrine glands will STOP or CONTINUE releasing their hormone? |
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Definition
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Term
| What is a tropic hormone? |
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Definition
- triggers release of a second hormone
- causes another gland to release another hormone
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Term
| What is a non-tropic hormone? |
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Definition
| binds to a target cell itself |
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Term
| What is the function of negative feedback? |
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Definition
- controls hormone levels
- provides hormone secretion to return us to homeostasis
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Term
| Is negative feed back a continuous loop? |
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Definition
|
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Term
This is an example of what?
eat-->glucose up-->pancreas secretes insulin-->cells absorb glucose-->glucose down-->back to homeostasis |
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Definition
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Term
| What is positive feedback? |
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Definition
|
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Term
|
Definition
- "tissue chemical" or "tissue hormone"
- hormone released within cell itself
- short acting effect
- fatty acid
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Term
| What are the glands of the endocrine system? |
|
Definition
- hypothalamus
- pancreas
- pituitary
- testes
- thyroid
- ovaries
- parathyroid
- pineal gland
- adrenal cortex
- thymus
- adrenal medulla
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|
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Term
|
Definition
- brain of endocrine system
- includes: pituitary and adrenal medulla
- tells pituitary and adrenal glands what to do
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Term
|
Definition
- part of hypothalamus
- told what to do by tropic hormones
- 2 parts
- anterior: adenohypophysis
- posterior: neurohypophysis
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Term
|
Definition
- told what to do by nerves
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Term
|
Definition
| told what to do by tropic hormones from hypothalamus |
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Term
| Posterior Pituitary Gland |
|
Definition
- told what to do by nerves from hypothalamus
- releases hormones into the blood stream
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|
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Term
|
Definition
- located in the neck
- two lobes
- requires iodine
- secretes 3 hormones
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|
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Term
|
Definition
- located on posterior thyroid gland
- releases PTH
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Term
|
Definition
- released by parathyroid glands
- secreted in response to low blood calcium
- stimulates bone breakdown
- increased calcium reabsorption by kidneys
- increase calcium aborption in the intestines
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Term
|
Definition
- located superior to kidney
- two parts
- outer: cortex
- secretes steroids
- inner: medulla
- controlled by hypothalamus
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Term
|
Definition
- an exocrine and endocrine gland
- secretes: glucagon and insulin
- Islets of Langerhans
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Term
|
Definition
- make and secrete glucagon and insulin in the pancreas
- Alpha - glucogen
- Beta - insulin
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Term
| Islets of Langerhans Alpha Cells |
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Definition
- produce glucagon
- raise glucose levels
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Term
|
Definition
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Term
| Islets of Langerhans Beta Cells |
|
Definition
- produce insulin
- response to high levels of glucose
- tells cells to take glucose from blood
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Term
|
Definition
- posterior to sternum
- development of lymphocytes
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Term
|
Definition
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Term
|
Definition
- secreted by thymus gland
- maturation of "T" cells
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Term
|
Definition
- function in immune system
- fight off infection
- stimulated by thymosin in the thymus gland
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Term
|
Definition
- prostoglandon secreted by the heart
- regulates fluid in heart
- only in heart tissue
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Term
|
Definition
- secreted by thyroid gland
- stops breakdown of bone
- low calcium
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Term
|
Definition
- secreted by pituitary/posterior gland
- stimulates kidneys to return water
- dehydration response
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Term
|
Definition
- secreted by thyroid
- stimulates breakdown of bone
- high calcium levels
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Term
|
Definition
- sympathetic response
- anergic fibers
- secrete epi/norepi
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