Investigating arteries and veins Methodology 1. Suspend a ring of artery from a hook on a clamp stand. 2. Use a metre rule to record the length of the ring once the mass carrier has been attached to the free end of the ring. 3. Attach a 10 g mass and record the length of the ring after the mass is added. 4. Remove the mass and record the length of the ring. 5. Repeat steps 2 and 3 using 20‚ 30‚ 40 and 50 g masses. Record the length with and without the masses each time. When comparing
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Characteristics of a blood vascular system • A blood circulatory system consists of the following: • Two types – Open → Arthropods – Closed → Vertebrates • Pump • Vessels • Circulatory fluid 2 Circulatory system - Open • Insects and some molluscs • Blood pumped by heart → blood spaces • Sinuses • Blood in direct contact with tissues • Returns to heart via open veins • No control 3 Circulation in vertebrates 4 Double circulation • Blood moves through heart
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Write an essay on the following topic. Compare arteries‚ veins and capillaries in terms of their features and functions. (12 marks) ## Content (maximum 9 marks) |Contents |Differences |Marks | |Features |Arteries have thicker wall to withstand the high blood pressure | | | |Veins have thinner wall.
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Kabuga BIO 160 10/28/14 Adult vs. Fetal Circulation CRN 93954 Prof. Kifle In adult circulation sequence‚ non-oxygenated blood enters the right atrium via the inferior and superior vena cava. The increase level of blood in the right atrium causes the tricuspid valve to open and drain the blood to the right ventricle. Pressure of blood in the right ventricle causes the pulmonic valve to open and non-oxygenated blood is directed to the pulmonary artery then to the lungs. The exchange of gases occurs
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Tema 16. Coronary Circulation Comisión Papanicolaou Unit 16. Coronary Circulation 1. Morfofunctional
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“Varicose veins are gnarled‚ enlarged veins. Any vein become varicose‚ but the veins most commonly affected are those in your legs and feet. That’s because standing and walking upright increases the pressure in the veins of your lower body” (Mayo Clinic‚ 2011). “Varicose veins are the result of damaged or improperly working valves in the veins‚ which cause blood to back up and make the vein swell” (Cardio Smart‚ 2012). “Varicose veins are enlarged veins that can be blue‚ red‚ or flesh colored.
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The heart is a hollow muscular organ that pumps blood throughout the blood vessels to various parts of the body by repeated‚ rhythmic contractions. It is found in all animals with a circulatory system‚ which includes the vertebrates. The adjective cardiac means "related to the heart" and comes from the Greek καρδιά‚ kardia‚ for "heart". Cardiology is the medical speciality that deals with cardiac diseases and abnormalities. The vertebrate heart is principally composed of cardiac muscle and connective
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Basic Notions of Copyright and Related Rights By the International Bureau of WIPO 1. BASIC NOTIONS OF COPYRIGHT A. Introduction Copyright legislation is part of the law “intellectual property”. This law protects the interests of creators by giving them property rights over their creations. It is there to stimulate creativity‚ make them available to the public and to ensure international trades protected by intellectual property right are harmonized (the law is recognized in most countries)
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the fulfilment of rights and choices of individuals with dementia while minimising risk of harm WORD MEANING RIGHTS Human rights; independence; respect; freedom to do what I want; to protect myself and my property; to be heard; to vote; to express my sexuality; right to an education/work. RISK Danger; part of life; unacceptable or acceptable; who’s risk? risky activities; risk of harm; injury; protection. CHOICE Independence; ‘my life’; variety of; priorities; making the right choice; making
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The phrase “The right to die” means the ethical or institutional entitlement of the individual to commit suicide or to undergo voluntary euthanasia.( Right to die‚ - Wikipedia‚ the free encyclopedia‚ 6 April 2012) It is one of the topics that has been debated over centuries. It starts from the 1950s‚ which arise from a small group of thinkers and writers in the United States and Europe‚ they began to argue about the choice that allows the patients to end their life by themselves in the case of surviving
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