Download Endocrine Notes

Biology 30
Your Endocrine System Notes
Comparison of Nervous System and Endocrine System
Nervous System
Endocrine System
Produces
Produces
Direct Cell to Cell
Communication
Hormones travel to their target
through
Lasts a _______ time
Last a _________ time
General Things to Know
• Endocrine = _______________________
• Hormones are chemicals produced in minute amounts
• All hormones in body together weigh less than
____________.
• Control the slow processes in our bodies
•
•
•
•
•
•
•
Rate of ___________
_______________
Development before ____________
___________________, birth process,
____________________
Initiation of _________ & sexual maturity
Storing & breakdown of ______________
Maintaining ______________ & mineral levels
Biology 30
Endocrine System Notes
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•
Hormones are chemical messengers
• Produced in a ___________
• Travel through the ______________
• Act on a “______________” cell.
• Hormones are created in glands called ENDOCRINE glands
(“_____________________”)
• Because the glands secrete into the __________________,
not into a body cavity (_____________).
Types of Hormones
1. __________________ Hormones (Prostaglandins)
• Not typical hormones
• Act immediately on area __________________
• Action is ________ and ____________
• Example = _______________
• Released by tissues when affected by a foreign
substance… pollen…
• Increases blood flow and fluid leaks into tissues
• Inflammation, redness, swelling
2. _________________ Hormones
• Typical
• Produced by endocrine glands
• Travel through _____________
• To __________ cell
• Combine with _____________ on or in the target cell
• Receptor site is either ______ the membrane or ______
cytoplasm
• ________________________ in the target cell
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Endocrine System Notes
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Chemical Structure of Hormones
2 types
1. _______________ or Peptide Hormones
• Made up of __________ chains or long ____________
• Water __________ / lipid __________
• ______________ cross phospholipid bilayer
• Includes hormones from
• ___________________
• ___________________
• ___________________
2. _______________ Hormones
• Chemically related to __________________
• Water __________ / lipid _______________
• Can pass right through the cell membrane
• Includes
• ____________________
• _______________________
• Hormones from the _______________________
Biology 30
Endocrine System Notes
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Anatomy of the Endocrine System
•
Identify the following endocrine glands on a diagram of a
human
Pituitary Gland
Testes
Hypothalamus
Ovaries
Pineal Gland
Adrenal Glands
Thyroid
Pancreas
Parathyroid
Thymus
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Endocrine System Notes
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Biology 30
Endocrine System Notes
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Endocrine System Notes
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Anatomy of the Endocrine System
•
Hypothalamus
• hormones produced here are secreted into the blood through
the _____________________
A SUMMARY OF THE MAJOR HORMONES
SOURCE
HORMONE
TARGET
EFFECT
Posterior Pituitary
Posterior Pituitary
Anterior Pituitary
Anterior Pituitary
Anterior Pituitary
Anterior Pituitary
Anterior Pituitary
Anterior Pituitary
Pineal Gland
Biology 30
Endocrine System Notes
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SOURCE
HORMONE
TARGET
EFFECT
Thyroid Gland
Thyroid Gland
Parathyroid Gland
Adrenal Cortex
Adrenal Cortex
Adrenal Medulla
Adrenal Medulla
Pancreas
(Beta cells)
Pancreas
(Alpha cells)
Ovary
Ovary
Testes
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Endocrine System Notes
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Hormones & Feedback
• Hormone levels are regulated through a process called
________________________________
1. When not the brain detects an inappropriate level of a certain
hormone, it will do things to fix the problem.
2. When the problem is solved, the brain stops trying to fix it.
EXAMPLE:
• When insufficient levels of __________ in body…
1. the pituitary releases ________________
2. _________________________________
3. Soon thyroxin levels are high enough for _______________
__________________________________________
4. As a result, _________________________________.
Biology 30
Endocrine System Notes
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Hormonal Control Assignment
•
Using your textbook and class notes, describe each the
following disorders by
1. indicating the symptoms
2. identifying the hormones involved
3. identifying if this hormone is in hypersecretion or
hyposecretion.
1.hypothyroidism
2.hyperthyroidism
3.
4.
5.
6.dwarfism
7.
Biology 30
Endocrine System Notes
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