Chapter 17 - Section 17.4 - Study Guide - Assess Your Learning Outcomes - Page 669: 1

The three main chemical classes of hormones are proteins and peptides, steroids, and amines. Here are examples of hormones from each class: 1. **Proteins and Peptides:** - **Insulin:** Produced by the pancreas, insulin regulates blood sugar levels by facilitating the uptake of glucose into cells. - **Growth Hormone (GH):** Secreted by the pituitary gland, GH stimulates growth, cell reproduction, and regeneration in humans and other animals. - **Thyroid-Stimulating Hormone (TSH):** Produced by the pituitary gland, TSH regulates the thyroid gland's activity and the production of thyroid hormones. 2. **Steroids:** - **Cortisol:** Produced by the adrenal glands, cortisol plays a role in regulating metabolism, immune response, and stress responses. - **Testosterone:** Produced in the testes (in males) and ovaries (in females), testosterone is responsible for the development of male reproductive tissues and secondary sexual characteristics. - **Estrogen:** Produced primarily in the ovaries (in females), estrogen plays a key role in the development of female reproductive tissues and secondary sexual characteristics. 3. **Amines:** - **Epinephrine (Adrenaline):** Produced by the adrenal glands, epinephrine is involved in the "fight or flight" response, increasing heart rate and redirecting blood flow to vital organs during stress. - **Norepinephrine (Noradrenaline):** Also produced by the adrenal glands, norepinephrine is involved in the regulation of blood pressure and other physiological responses to stress. - **Thyroxine (T4) and Triiodothyronine (T3):** Produced by the thyroid gland, these hormones play a crucial role in regulating metabolism and overall energy balance. Each of these hormone classes serves vital functions in the body, regulating various physiological processes and maintaining overall homeostasis.

The three main chemical classes of hormones are proteins and peptides, steroids, and amines. Here are examples of hormones from each class: 1. **Proteins and Peptides:** - **Insulin:** Produced by the pancreas, insulin regulates blood sugar levels by facilitating the uptake of glucose into cells. - **Growth Hormone (GH):** Secreted by the pituitary gland, GH stimulates growth, cell reproduction, and regeneration in humans and other animals. - **Thyroid-Stimulating Hormone (TSH):** Produced by the pituitary gland, TSH regulates the thyroid gland's activity and the production of thyroid hormones. 2. **Steroids:** - **Cortisol:** Produced by the adrenal glands, cortisol plays a role in regulating metabolism, immune response, and stress responses. - **Testosterone:** Produced in the testes (in males) and ovaries (in females), testosterone is responsible for the development of male reproductive tissues and secondary sexual characteristics. - **Estrogen:** Produced primarily in the ovaries (in females), estrogen plays a key role in the development of female reproductive tissues and secondary sexual characteristics. 3. **Amines:** - **Epinephrine (Adrenaline):** Produced by the adrenal glands, epinephrine is involved in the "fight or flight" response, increasing heart rate and redirecting blood flow to vital organs during stress. - **Norepinephrine (Noradrenaline):** Also produced by the adrenal glands, norepinephrine is involved in the regulation of blood pressure and other physiological responses to stress. - **Thyroxine (T4) and Triiodothyronine (T3):** Produced by the thyroid gland, these hormones play a crucial role in regulating metabolism and overall energy balance. Each of these hormone classes serves vital functions in the body, regulating various physiological processes and maintaining overall homeostasis.