Week 3 Lab 4 – Endocrine System Physiology - Activities 1-4 pages 43 - 48 Latasha Roberts March 25‚ 20012 SC145L-8H Introduction: (please post an introduction to the lab‚ include what you will be doing for each activity) Activity 1: Determining Baseline Metabolic Rates Data: (add your results here in numbers - Chart 1 is used in Activities 1-4) Chart 1 – Effects of Hormones on Metabolic Rate Rat Types Baseline: Normal Thyroidectomized Hypophysectomized Weight
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ENDOCRINE SYSTEM The endocrine system helps regulate and maintain various body functions by synthesizing (making) and releasing hormones‚ chemical messengers. The endocrine system is composed of glands that release their hormones directly into the bloodstream for chemical signaling of target cells. Endocrine glands do not have a duct system and are called ductless glands. These glands release hormones directly into the blood or lymph. These glands include the pituitary gland‚ the pineal gland
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Background Smooth muscle is one of three muscle fiber types found in animals. Unlike skeletal and cardiac muscle cells‚ smooth muscle cells are not striated‚ and have single nuclei. Smooth muscles are typically under control of the autonomic nervous system‚ and do not contract voluntarily. Smooth muscle contracts slowly‚ and does not exhibit the characteristic “twitch” seen in skeletal muscle. In addition‚ smooth muscle is not prone to muscle fatigue‚ making it an ideal component of sphincter muscles
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The endocrine system is very dynamic and has ties to most‚ if not all of the other major systems of the body. It is responsible for production of hormones and the regulation of them as well. These hormones act as chemical messengers within the body. Through several differing mechanisms‚ they are able to trigger very specific responses in target cells or organs. This is what enables the endocrine system to guide growth‚ development‚ reproduction‚ and behavior‚ among many others as well.
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The endocrine system is one of our body systems that plays an important role in living. It comprises of many glands exerting hormones in maintaining the body’s internal environment also known as homeostasis. The endocrine system plays an important role in homeostasis because it maintains growth and development‚ maturation‚ reproduction‚ human behavior‚ metabolism‚ sexual function and controls functions of the tissues. It is partnered with the nervous system since the hypothalamus along with the pineal
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Endocrine system The Endocrine system is very important to our body. This system regulates our mood‚ growth‚ metabolism‚ tissue development‚ sexual functions and reproductive process. It is a very complex system with many different hormones and glands. I am going to write about the pituitary gland and thyroid. The pituitary gland is very often considered to be the most important glad in the Endocrine system. The Thyroid produces thyroxine andtriiodothyronine. The Pituitary gland is no bigger
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11/7/2011 CHAPTER 18 ENDOCRINE SYSTEM Identify the endocrine glands and their hormones. Gain an understanding of the functions of these hormones in the body. Analyze medical terms related to the endocrine glands and their hormones. Identify abnormal conditions resulting from excessive and deficient secretions of the endocrine glands. Describe laboratory tests and clinical procedures related to endocrinology‚ and recognize relevant abbreviations. Apply your new knowledge
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Endocrine System Is a group of specialized organs and body tissues that produce‚ store‚ and secrete chemical substances known as hormones. As the body’s chemical messengers‚ hormones transfer information and instructions from one set of cells to another. Because of the hormones they produce‚ endocrine organs have a great deal of influence over the body. Among their many jobs are regulating the body’s growth and development‚ controlling the function of various tissues‚ supporting pregnancy
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Lab 4: Endocrine System Physiology | 1. | | Refer to Activity 1: Determining Baseline Metabolic Rates. How did the baseline metabolic rates of the three rats differ? Answer: | The metabolic rates for the thyroidectomized and hypophysectomized rats were lower than that of the normal rat. | | | 2. | | Why did the metabolic rates differ? Check all that apply: Answers: | The hypophysectomized rat lacked thyroid-stimulating hormone. The thyroidectomized rat lacked thyroxine hormone.
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NAME:____________________________ REGULATION REVIEW - HONORS [pic] ENDOCRINE SYSTEM 1. Explain how the endocrine system aids humans in maintaining homeostasis. 2. Consider the following diagram of the human endocrine system: [pic] a. Label each number with the appropriate term. b. Which numbered structure produces hormones that regulate blood sugar levels? c. Which numbered structure produces hormones that stimulate egg
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