Straighterline Anatomy and Physiology 1 Lab BIO201L Lab 9 The Endocrine System Worksheet 2023

1. What is the function of the endocrine system? The endocrine system regulates and controls various bodily functions through the production and release of hormones into the bloodstream. 2. Research two types of hormones and describe the mode of action for each. Insulin: Insulin is a hormone produced by the pancreas that plays a crucial role in regulating blood sugar levels. Its mode of action involves binding to specific insulin receptors on target cells, such as muscle and fat cells. This binding activates a signaling cascade that promotes the uptake of glucose from the bloodstream into cells, thereby lowering blood sugar levels. Thyroid Hormones: The thyroid gland produces hormones called thyroxine (T4) and triiodothyronine (T3), which are involved in regulating metabolism and energy production. Thyroid hormones enter target cells and bind to nuclear receptors located in the cell nucleus. This binding initiates gene transcription, leading to the production of proteins that affect metabolism, growth, and development. Thyroid hormones increase the basal metabolic rate and influence the function of various organs and tissues throughout the body