Maintenance of calcium ion homeostasis is critical to neurological, cardiac, and skeletal muscle function. Consider the roles of two hormones involved in the regulation of the concentration of calcium ions in the blood: Parathyroid Hormone and Calcitonin. Based on this information, predict the body's response to restore calcium balance if a person swallowed 30 antacid tablets in 10 minutes made of a calcium compound. Relate this response to bone remodeling. Include in your answer the following: 1. The definition of homeostasis, the two types of feedback mechanisms that control homeostasis, and all of the components of a feedback loop. 2. An overview of bone remodeling and the role of parathyroid hormone and calcitonin. How do these hormones work together to maintain blood calcium levels through bone remodeling? Include where these hormones are made, what cells they affect, and how they interact with each other. 3. What type of feedback mechanism will the body use to counteract the antacids increase in calcium levels and which hormone will the body use to restore blood calcium levels?

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Tissue renewal

In multicellular organisms, tissue is a level of structure that consists of a group of physically and functionally identical cells and their intercellular substances. Unicellular organisms do not have tissues. Tissues are absent or poorly differentiated even in the simplest multicellular animals, such as sponges. However, more evolved multicellular animals and plants have specialized tissues that may organize and govern an organism's reaction to its surroundings. The word tissue is derived from the Latin word 'weave.' Plants and animals have various kinds of tissue systems that differ in their work and composition according to the different requirements.