Chapter 25 Control of Body Temperature and Water Balance PowerPoint Lectures for Biology: Concepts & Connections‚ Sixth Edition Campbell‚ Reece‚ Taylor‚ Simon‚ and Dickey Lecture by Edward J. Zalisko Copyright © 2009 Pearson Education‚ Inc. Introduction: Chilling Out Bears sleep a lot during winter But bears do not hibernate Instead‚ they become dormant – Body temperature drops from 37°C to 31–34°C – True hibernators may cool to 30°C Dormant bears – Are easily awakened – True
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the vessel. Arteries‚ subjected to considerable pressure fluctuations‚ have thicker walls overall‚ with the tunica media being thicker than the tunica adventitia. Veins‚ in contrast‚ are subjected to much lower pressures and have thinner walls overall‚ with the tunica adventitia often outsizing the tunica media. Because thinwalled veins conduct blood back to the heart against gravity‚ valves (not present in arteries) also are present at intervals to
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HARVEY Jamee’ Hall Charter College Abstract William Harvey (1578-1657) had refused prior explanations of blood circulation and motion. He studied by observing the direction of the valves in the veins. He noted the comparisons between to the cardiac valves‚ and investigated the many valves in the veins‚ recording the discrepancy of prior beliefs. Harvey considered a substitute hypothesis that the blood circulates. His fascination and studies led to the discovery of blood circulation. He revealed
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detail how the humerus would grow in length. Calcium in the diet of a teenager is absorbed in the small intestine and transferred to the intestinal capillaries. It diffuses into the bloodstream through the gastric vein into the hepatic vein and then through the common iliac vein into the superior/inferior vena cava that brings the blood into the right atrium of the heart. The sinoatrial node which is located in the right atrial wall‚ would send an electrical impulse through the heart‚ causing
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out side to the lymph nodes and the efferent vessels are coming out from the lymph nodes . The artery enter to lymph nodes for circulation of the blood and break into capillaries then as capillaries end and enter to vein so the region in the inner cortex where the capillary enter to veins called postcapillary venules . In this region as epithelial tissue are present in side the blood vessels have special type of cell which catch or push the lymphocyte into the lymph nodes body or lymph cavity. The spleen
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donz kay Lymphatic system: main function is to make immune cells which are the white blood cells and deliver them throughout the body. The lymphatic system also works with the circulatory system to deliver nutrients‚ oxygen‚ and hormones from the blood to the cells that make up the tissues of the body. Digestive system: function is to breakdown the food we eat into smaller particles and absorbing of nutrients into the blood stream‚ so that the body can use them for energy‚ Reproductive system:
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#4 A phlebotomist has orders to collect a CBC and a protime specimen from a patient who has IVs in both forearms and major bruising on the left hand. Should the specimen be collected above or below the IV on either arm or hand‚ from an ankle or foot vein‚ or by fingerstick? Explain your choice.--- I would collect from below the IV on the right side. Objective #5 While drawing a blood specimen from a patient‚ a huge hematoma starts to form‚ and the blood spurts into the collection tube. The patient
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Fantastic Voyage Lisa Whitfield HS 130 Anatomy and Physiology II Unit 9 Kaplan University 5/20/13 Fantastic Voyage The gastrointestinal tract starts with the mouth‚ which leads to the gullet via the stomach‚ small intestine‚ large intestine‚ and ends at the anus. In due course of the journey‚ the ingested food is broken down by both physical and chemical means to release nutrients which are absorbed into the blood stream. The ingested food is physically broken down in the mouth
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pulmonary embolism is‚ I am going to say that a pulmonary embolism is a part of group of problems all known as venous thromboembolism (VTE). Venous refers to veins‚ while thrombus is the blockage of blood vessel and when the blockage breaks off and travels‚ is called an embolism. A pulmonary embolism is usually a clot that was originally from a deep vein thrombosis in the legs or pelvic region. This can be a life-threatening condition if not treated right away. (ALL FOUND IN SOURCE #2) There are a few
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process‚ the actual blood draw. First tie the tourniquet about 3 inches above the site you are wanting to withdraw blood from. Have the patient make a fist but do not have them pump their first. Then palpate and trace the path of the vein with the index finger. The vein should feel cord-like and it
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