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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of well known environmental contaminants‚ such as dioxin‚ PCBs and DDT‚ can affect hormone levels. Hormones are produced by the endocrine system as regulators of biological function in target organs. Because hormones play a critical role in early development‚ toxicological effects on the endocrine system often have an impact on the reproductive system. The term endocrine disruptor is used to describe chemicals that can mimic hormones and may either enhance or counteract their effects. It has been
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glandular secretions Produces electrolytes Controls growth and development Answer: d Difficulty: Easy Learning Objective 1: 18.1 Compare control of body functions by the nervous system and endocrine system. Section Reference 1: 18.1 Comparison of Control by the Nervous and Endocrine Systems 2) When a hormone is present in excessive levels‚ the number of target-cell receptors may decrease. This is called receptor recognition. sensory adaptation. paracrine regulation
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Sakariye .M Biology 5/27/2014 ENDOCRINE DISRUPTORS AND HOW THEY AFFECT EVERYTHING “Our Stolen Future” by Theo Colborn is about the health and environmental threats created by man-made chemical contaminants that interfere with hormones in humans and wildlife. In this paper i’ll explain what is an endocrine system‚ what are endocrine disruptors‚ and how endocrine disruptors affect humans. The endocrine system includes all of the glands of the body and the hormones produced by those glands
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LAB ONE: Exercise 4 – Endocrine System Activity 1: Metabolism and Thyroid Hormone Part 1: 1. The normal rat had the fastest basal metabolic rate. 2. The metabolic rates differed between the normal rat and the surgically altered rats because the surgically altered rats didn’t have a thyroid or pituitary gland and therefore‚ the normal rat had a faster basal metabolic rate. The results turned out to be the way I predicted them to be. 3. T3 and T4 would be missing in the animal’s blood
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Endocrine system or endocrine disruptor is not something we commonly hear or discuss about in our society. However‚ they both play a big role in humans. Many people have no insight of endocrine system or endocrine disruptor. The endocrine system is glands secreting different types of hormones that go directly into bloodstream to transfer information and instruction to one set of cells to another certain cells. Hormones are the body’s chemical messenger which regulates growth and development‚ body’s
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There are four types of tissue found in animals: connective‚ muscle‚ nervous‚ and epithelial. We are going to go into muscle tissue. The cells of muscle tissues are called fibers. There are three types of muscle tissue and they are skeletal‚ cardiac‚ and smooth. All types can go though hypertrophy (enlargement or overgrowth of an organ or part of the body due to the increased size of the constituent cells). Muscle fibers contract due to the interaction of the contractile proteins‚ actin and myosin
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Lab 4 Histology Name AL List the four types of tissue found in the human body and give an example of each. 1. Epithelial 2. Connective 3. Muscular 4. Nervous Epithelial tissue What are the characteristics of epithelial tissue? it never has contact with another cell‚ it always has a free surface. They contain no blood vessels (avascular) and depend on underlying tissues for needed nutrients and oxygen sources to maintain homeostasis. it is usually very thin for this reason
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Cells of the body are organized into four fundamental tissues; epithelial‚ connective‚ muscle and nerve. Epithelial tissues line all surfaces of the body: the skin‚ cavities‚ ducts‚ vessels. They are named according to the cell shape on the free surface. Cells of a tissue are held together by the basement membrane and intercellular fibbers. These tissues receive their nutrition by diffusion‚ for they are without blood vessels. Simple squamous epithelium lines all blood and lymphatic vessel‚ including
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Endocrine system Endocrinology is the study of chemical communication systems that provide the means to control a huge number of physiologic processes. Like other communication networks‚ endocrine systems contain transmitters‚ signals and receivers that are called‚ respectively‚ hormone producing cells‚ hormones and receptors. The first step in understanding endocrinology is to explore the meaning of such terms as hormone‚ receptor and target cell‚ and to obtain an understanding of how chemical
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