Hormones and homeostasis
Homeostasis: 2 mechanisms: Negative Feedback Loop and Positive Feedback
• Leptin is secreted by cells in adipose (fat) tissue and acts on the hypothalamus of the brain to inhibit appetite.
• Application: Testing of leptin on patients with clinical obesity and reasons for the failure to control the disease.
Watch the short video below several times to understand leptin's effect.
• Application: Testing of leptin on patients with clinical obesity and reasons for the failure to control the disease.
Watch the short video below several times to understand leptin's effect.
Insulin / Glucagon / Regulation of blood glucose / Diabetes mellitus
Insulin is secreted by β (Beta) cells of the pancreas, and glucagon is secreted by α (Alpha) cells of the pancreas,
to control blood glucose concentration.
Glucagon has an a in the middle of the word so think alpha! Insulin has no a in it, so think beta.
Application: Causes and treatment of Type I and Type II diabetes
Insulin is secreted by β (Beta) cells of the pancreas, and glucagon is secreted by α (Alpha) cells of the pancreas,
to control blood glucose concentration.
Glucagon has an a in the middle of the word so think alpha! Insulin has no a in it, so think beta.
Application: Causes and treatment of Type I and Type II diabetes
• Thyroxin is secreted by the thyroid gland to regulate the metabolic rate and help control body temperature.
• Melatonin is secreted by the pineal gland to control circadian rhythms
• Application: Causes of jet lag and use of melatonin to alleviate it.
• Melatonin is secreted by the pineal gland to control circadian rhythms
• Application: Causes of jet lag and use of melatonin to alleviate it.
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| RETEST Physiology |
