“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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cardiovascular system The cardiovascular system is a system that is able to transport things such as nutrients through the body in order for them to reach their destinations. The cardiovascular system is made up of our hearts‚ our blood vessels‚ arteries‚ veins and capillaries and our blood. The system is also linked to the respiratory system. The heart The heart is the size of a closed fist‚ this can be located in the thoracic cavity. The thoracic cavity is a chamber of the body that is between the lungs
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will be inserted into one of your veins. • You may be given a medicine that helps you relax (sedative). • The area of your body chosen for insertion of the catheter will be cleaned. This is usually the neck or groin‚ but it is sometimes done in another area. ○ You will be given a medicine that numbs this area (local anesthetic). ○ A small incision will be made in a vein in this area. • A catheter will be inserted through the incision and into the vein. The health care provider will carefully
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The cardiovascular system which impacts deeply on human consciousness. The heart and the body’s blood-transporting network of arteries‚ veins‚ and smaller vessels form the circulatory or cardiovascular system. As blood is continuously pumped out from the heart and around the system in two circuits‚ it carries oxygen and vital nutrients to all parts of the body and removes harmful waste products from tissues. (P.169) What is the hepatic portal system?(Answer if your last name starts A – M) The hepatic
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developing maternal blood supplies the oxygen‚ blood‚ and nutrients to the fetus and takes away the waste. The exchange of maternal blood and fetal blood to the fetus happens through the placental membrane and the umbilical cord vessels. The umbilical vein goes into the body through the umbilical ring‚ and half of the blood running though it goes to the liver and the rest goes to the ductus venous. It joins with the inferior vena cava. Blood goes to the fetal right atrium from the inferior vena cava
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Arteries Have a thick wall Have a small lumen Carry blood AWAY from the heart Don’t have any valves Veins Have a thin wall Have a large lumen Carry blood TO the heart Have valves Capillaries lets the exchange of gas to take place it’s one cell thick The Blood The blood is made up of 4 parts‚ the white blood cells‚ red blood cells‚ plasma and platelets
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A varicose vein is a superficial vein with a faulty valve. The calf muscles squeezes the deep veins in the leg and pressure is reduced in the superficial veins. These superficial veins are fitted with special one-way valves to prevent the blood running backwards. The weight of blood in the vein is conciderable especially while standing still and the blood flow is against gravity. and blood is allowed to pool stretching the walls of the veins which damage the valves resulting in the lumen being unable
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outcomes Power point Handouts Demonstrating Listening Taking notes Questioning Questioning 09.45- 09.54 9mins OBJ:to demonstrate the sites of venipuncture LOC: learners will be able to identify the safe sites of the veins to
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atherosclerosis‚ and arteriovenous malformation. Some that are less common‚ but do occur would include drugs‚ infection‚ and trauma. Dissecting aneurysms occur when blood enters a vessel wall through a rupture in the intima‚ which is the inner lining of vein or artery. The damage in dissecting aneurysms varies greatly depending on the damage it has already caused. These are the weakest aneurysms‚ because they don’t leave the premises of the parent vessel. There are cases were dissecting aneurysms cause
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Unit 1 Questions 1- 3 Figure 1 The sources of blood glucose in a human body during a normal day of 24 hours are shown in the above figure. Glucose is primarily derived from glycogenolysis occurring between meals. Glucose is chiefly sourced from the dietary intake for few hours following the principal meals of the day. Late at night‚ gluconeogenesis becomes the predominant source of glucose. 1 Glycogenolysis decreases after midnight because A C 2 gluconeogenesis takes place. hepatic glycogen is
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