Hormones <ul><li>Starter activity </li></ul><ul><li>Name the difference between the bipolar cell connection between a rod ...
Hormones  <ul><li>Learning objectives </li></ul><ul><li>To list the groupings of the mammalian hormones </li></ul><ul><li>...
Mammalian hormones <ul><li>Name the difference between the endocrine and exocrine glands </li></ul>Secretes enzymes Secret...
Hormones   <ul><li>List the 3 major chemical groups that most of the hormones will belong to </li></ul><ul><li>Amines </li...
Amines Amine group Adrenaline Thyroxine
Peptides  Peptide Insulin Glucagon
Steroids
Hormones <ul><li>Hormones can promote an action or inhibit an action (  ) </li></ul><ul><li>They will usually affect 1 org...
Hormones   <ul><li>Hormonal secretion occurs during 3 types of stimulus </li></ul><ul><li>1) The presence or change in con...
Hormone mechanism <ul><li>Hormones can only affect the target cells in the target organs because the targeting cell has th...
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Hormones

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A2 biology edexcel

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Hormones

  1. 1. Hormones <ul><li>Starter activity </li></ul><ul><li>Name the difference between the bipolar cell connection between a rod and cone? </li></ul>
  2. 2. Hormones <ul><li>Learning objectives </li></ul><ul><li>To list the groupings of the mammalian hormones </li></ul><ul><li>To explain control and actions of different hormones </li></ul><ul><li>To summarise the principle of negative feedback </li></ul>
  3. 3. Mammalian hormones <ul><li>Name the difference between the endocrine and exocrine glands </li></ul>Secretes enzymes Secretes hormones Secretes Into duct glands Directly into the blood Secretion process Exocrine gland Endocrine gland Property
  4. 4. Hormones <ul><li>List the 3 major chemical groups that most of the hormones will belong to </li></ul><ul><li>Amines </li></ul><ul><li>Peptides </li></ul><ul><li>Steroids </li></ul>
  5. 5. Amines Amine group Adrenaline Thyroxine
  6. 6. Peptides Peptide Insulin Glucagon
  7. 7. Steroids
  8. 8. Hormones <ul><li>Hormones can promote an action or inhibit an action ( ) </li></ul><ul><li>They will usually affect 1 organ known as the ( ) or many organs </li></ul><ul><li>Secretion of the endocrine glands are all controlled by the ( ) </li></ul>
  9. 9. Hormones <ul><li>Hormonal secretion occurs during 3 types of stimulus </li></ul><ul><li>1) The presence or change in concentration of a specific substance in the blood e.g. (glucose concentrations) </li></ul><ul><li>2) The presence or change in concentration of another hormone in the blood (thyroid stimulating hormone) </li></ul><ul><li>3) Nervous stimulation from neurones in the autonomic system (adrenaline) response to danger </li></ul>
  10. 10. Hormone mechanism <ul><li>Hormones can only affect the target cells in the target organs because the targeting cell has the appropriate receptor site . </li></ul><ul><li>1) Hormone will bind at the receptor site on the cell surface membrane </li></ul><ul><li>2) Hormone-receptor complex is formed </li></ul><ul><li>3) Second messenger substance becomes activated </li></ul><ul><li>4) Effect from this messenger starts the appropriate chain of events </li></ul>
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