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Human Endocrine System - Notes & Summary - IEB Life Sciences
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Human Endocrine System Notes - IEB Life Sciences. By an IEB graduate. Achieved 9 distinctions in matric finals.
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Human Endocrine SystemNotes
IEB Life Science
, Contents
Contents...................................................................................................................................................... 2
Youtube........................................................................................................................................................ 4
Class notes..................................................................................................................................................4
Introduction................................................................................................................................................. 4
Endocrine System: Chemical Co-ordination............................................................................................5
Hormones:.............................................................................................................................................. 6
Endocrine vs. Exocrine glands..................................................................................................................6
Human endocrine glands:..........................................................................................................................7
1. Pituitary gland......................................................................................................................................... 7
Hormones from Posterior Pituitary gland (2).......................................................................................... 7
1) Antidiuretic hormone (ADH).........................................................................................................7
2) Oxytocin.......................................................................................................................................8
Hormones from Anterior Pituitary gland (2)............................................................................................ 8
1) Growth hormone.......................................................................................................................... 8
2) Thyroid-stimulating hormone (TSH).............................................................................................9
2. Thyroid gland.......................................................................................................................................... 9
Disorders................................................................................................................................................ 9
1) Goitre [Iodine deficiency]............................................................................................................. 9
2) Hyposecretion (undersecretion).................................................................................................10
3) Hypersecretion (Over secretion)................................................................................................10
Negative feedback................................................................................................................................10
3. Pancreas................................................................................................................................................ 11
Insulin & Glucagon................................................................................................................................11
Insulin............................................................................................................................................. 11
Glucagon........................................................................................................................................12
Diabetes............................................................................................................................................... 12
Type 1 diabetes (insulin-dependent)..............................................................................................12
Type 2 diabetes (non-insulin-dependent).......................................................................................12
4. Adrenal glands...................................................................................................................................... 13
Adrenaline: Fight or Flight system........................................................................................................ 13
5. Gonads...................................................................................................................................................14
Ovaries (female)................................................................................................................................... 14
Oestrogen...................................................................................................................................... 14
Progesterone................................................................................................................................. 15
Testes (male)........................................................................................................................................ 15
testosterone................................................................................................................................... 15
Hormonal imbalances can cause infertility........................................................................................... 15
1. Prolactin..................................................................................................................................... 15
2. Follicle stimulating hormone (FSH)............................................................................................16
3. Luteinizing hormone (LH)...........................................................................................................16
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