37: The Endocrine System
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- 37.1: Types of Hormones - Hormone Functions
- The endocrine system plays a role in growth, metabolism, and other processes by releasing hormones into the blood.
- 37.2: Types of Hormones - Lipid-Derived, Amino Acid-Derived, and Peptide Hormones
- All hormones in the human body can be divided into lipid-derived, amino acid-derived, and peptide hormones.
- 37.3: How Hormones Work - Introduction
- Hormones are chemical messengers that relay messages to cells that display specific receptors for each hormone and respond to the signal.
- 37.4: How Hormones Work - Intracellular Hormone Receptors
- Lipid-soluble hormones diffuse across the plasma membrane of cells, binding to receptors inside the cells where they alter gene expression.
- 37.5: How Hormones Work - Plasma Membrane Hormone Receptors
- Hormones that cannot diffuse through the plasma membrane instead bind to receptors on the cell surface, triggering intracellular events.
- 37.6: Regulation of Body Processes - Hormonal Regulation of the Excretory System
- The contrasting actions of antidiruetic hormone and aldosterone work to regulate the level of water in the body.
- 37.7: Regulation of Body Processes - Hormonal Regulation of the Reproductive System
- Male and female gonads are regulated by FSH and LH from the pituitary; their production is stimulated by GnRH, secreted by the hypothalamus.
- 37.8: Regulation of Body Processes - Hormonal Regulation of Metabolism
- The levels of glucose in the blood are regulated by the hormones insulin and glucagon from the pancreas, and T3 and T4 from the thyroid.
- 37.9: Regulation of Body Processes - Hormonal Control of Blood Calcium Levels
- Blood levels of calcium are regulated by the parathyroid hormone, which acts on the bones, kidneys, and intestines to keep levels constant.
- 37.10: Regulation of Body Processes - Hormonal Regulation of Growth
- Body growth is controlled by growth hormone (GH), produced by the anterior pituitary, and IGF-1, whose production is stimulated by GH.
- 37.11: Regulation of Body Processes - Hormonal Regulation of Stress
- The adrenal glands respond to either short-term or long-term stressors by releasing different hormones that act differently on the body.