“Dissections of Squalus acanthias and Rattus norvegicus” Ricardo Marin Biol 1107.103 (Tuesday 4-7) 12/05/2010 Miriam Hernandez Nayeli Perea I. Introduction The purpose of this lab is to be able to trace the flow of blood through both the mammalian and the shark heart. Learn all the major structures of the body systems of the shark and functions of certain structures as well as for the rat. Understand the terms of retroperitoneal‚ ovoviviparous‚ oviparous‚ and viviparous. Know which
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The liver is the largest organ in the entire‚ normal human body. It weighs anywhere from 2.5 to 3.3 pounds. With its large size it is also a very resilient organ. Up to 3/4 of its cells can be removed before is ceases to function. It is red-brown organ roughly shaped like a cone. The liver is located in the upper right abdominal cavity immediately beneath the diaphragm. Without the liver‚ we could not survive. It serves as the body’s chemical factory and it regulates the levels of most of the main
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Ligaments.—The liver is connected to the under surface of the diaphragm and to the anterior wall of the abdomen by five ligaments; four of these—the falciform‚ the coronary‚ and the two lateral—are peritoneal folds; the fifth‚ the round ligament‚is a fibrous cord‚ the obliterated umbilical vein. The liver is also attached to the lesser curvature of the stomach by the hepatogastric and to the duodenum by the hepatoduodenal ligament (see page 1157). 17 The falciform ligament (ligamentum falciforme
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Lethargy * Decreased muscle mass/tone CIRCULATION * May report: History of/recent onset of heart failure‚ pericarditis‚ rheumatic heart disease‚ or cancer (causing liver impairment leading to failure) * Easy bruising‚ nosebleeds‚ bleeding gums * May exhibit: Hypertension or hypertension (fluid shifts) * Dysrhythmias‚ extra heart sounds (S3‚ S4) * Jugular venous distension (JVD)‚ distended abdominal veins‚ spider angiomas/collateral circulation * Ecchymosis‚ petechiae * anemia
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Heart: pumps blood • Artery: vessel leaving the heart (Arteries take blood AWAY from your heart) • Vein: vessel going to the heart • Capillaries: vessels in beds for b d f exchange of h f substances between blood and the extra cellular fluid CIRCULATIONS • Systemic = heart → arteries → arterioles → capillary beds in muscles‚ organs etc → venules → veins → heart • Pulmonary = heart → arteries → arterioles → capillary beds in lungs → venules → veins → heart u gs e u es e s ea t BLOOD VESSELS
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Capillary From Wikipedia‚ the free encyclopedia Jump to: navigation‚ search For other uses‚ see Capillary (disambiguation). [pic] [pic] Blood flows from the heart to arteries‚ which branch and narrow into arterioles‚ and then narrow further still into capillaries. After the tissue has been perfused‚ capillaries branch and widen to become venules and then widen more and connect to become veins‚ which return blood to the heart. Capillaries (pronounced /ˈkæpəˌlɛri/) are the smallest of a body
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1. Name the circulatory system that carries blood from the heart to the lungs and back to the heart. Correct: pulmonary circulation 2. Name the circulatory system that provides blood to the tissues in the body. Correct: systemic circulation 1. Name the structure that is a double fold of peritoneum between the lesser curvature of the stomach and liver. Correct: Lesser omentum 2. Name the structure that is a double fold of peritoneum and holds the colon to the abdominal wall.
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The Cardiovascular System CHAPTER SUMMARY The importance of the cardiovascular system cannot be overstated. This is one system that students frequently know something about‚ at least from a plumbing viewpoint‚ but they often don’t completely understand the complexity of the system and the magnitude of its tasks. An essential component of presentation of the material is then to outline in detail the role of the cardiovascular system and its significance to all other body systems. This chapter
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Excretion. a) excretion is the removal or metabolic waste from the body. Metabolic waste consists of waste substances that may be toxic or are produced n excess by reactions inside cells. b) Explain the importance of removing metabolic wastes‚ including carbon dioxide and nitrogenous waste‚ from the body. The are many substances that need to be excreted - almost any cell product that is formed in excess by the chemical process occurring in the cells must be excreted. However there are two
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porphyrin ring and releasing the iron globin forms biliverdin‚ which is easily reduced to bilirubin. Bilirubin is transported to the liver in the bloodstream bound to proteins‚ chiefly albumin. It is then separated from the albumin and taken up by the hepatic cells. Two nonalbumin proteins‚ isolated from the liver cell cytoplasm and designated Y and Z‚ account for the intracellular binding and transport of bilirubin. The conjugation of bilirubin occurs in the endoplasmic reticulum of the hepatocyte. An
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