the entire nerve trunk and gives off vascular connective tissue septa that traverse the nerve and separate fascicles from one another. | | Single myelinated axon | Normal nerve | Axons thicker than one micron in the CNS and peripheral nervous system (PNS) are myelinated. Myelin is a spiral sheet of cell membrane wrapped around the axon. In the CNS‚ myelin is produced by oligodendroglial cells and in the PNS by Schwann cells. Each oligodendrocyte makes multiple segments of myelin that wrap around
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Variable: EDV‚ ESV‚ and cardiac cycle length 2. Independent Variable: level of physical activity 3. Controlled Variables: age‚ weight‚ height 4. What instrument was used to measure cardiac volumes? MRI 5. Does the instrument that was used to measure cardiac volume use X-rays? Explain. No. MRI uses a powerful magnet in conjunction with radio frequency waves to generate images of your internal organs and structures. . RESULTS See Table 2: Resting and Exercising Cardiac Cycle Length‚ EDV
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The Circulatory System The circulatory system in anatomy and physiology is the course taken by the blood through the arteries‚ capillaries‚ and veins and back to the heart. In humans and the higher vertebrates‚ the heart is made up of four chambers the right and left auricles‚ or atria‚ and the right and left ventricles. The right side of the heart pumps oxygen-poor blood from the cells of the body back to the lungs for new oxygen; the left side of the heart receives blood rich in oxygen from
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the anatomy and physiology of these three body systems; The Cardiovascular system‚ The Respiratory system and The Digestive system. The Cardiovascular System The cardiovascular system‚ also known as the circulatory system‚ consists of the heart‚ blood vessels and approximately 5 litres of blood. 55% of the blood is straw coloured yellow and 45% of the blood is made up of red and white blood cells and tiny particles called platelets. This system is powered by the heart and is responsible for
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Body Systems There are 10 body systems‚ one of them is the Integumentary (skin). It is composed of hair‚ skin‚ nails‚ sense receptions and oil glands. Its functionis to protect from outside‚ to regulate the body temperature‚ to make synthesis of hormones & chemicals and is used as a sense organ. Another one is the Skeletal System (bones). It is made of about 206 bones‚ that are divided in tho categories: axial bones (in the body by itself) and apendicular bones (arms & legs). We have Joints too
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BTEC Level 3 Certificate in Sport Unit 1- Principles of Anatomy & Physiology in Sport Assignment 1 of 3 Muscular system Muscles Skeletal‚ cardiac and smooth are the three main types of muscle in the body. Skeletal muscle is a voluntary muscle‚ this means that it is under control by the somatic nervous system. When viewed under a microscope the appearance of this muscle is striped/ striated. “The primary function of the skeletal muscle is to produce fine movements to keep you alive. Skeletal
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You might be at a location where there is only one Ethernet connection available (hotel room‚ office or meeting room etc.) and you need to share the Internet connection with other people or devices. Connectify is a free utility which is light on system resources and makes it easy for you to set up your Windows 7 machine as a secure WiFi hotspot. Note: Connectify only works with Windows 7 Home and above‚ Starter is not supported. Connectify Installation is quick and easy‚ and once complete‚ you
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CIRCULATORY SYSTEM Transport nutrients‚ respiratory gases‚ hormones‚ water‚ electrolytes‚ to and from all tissues of the body Body Fluids Interstitial Fluid - occupies spaces surrounding the cells in the body. Blood – contained within blood vessels BODY FLUID COMPOSITION LYMPHATIC SYSTEM FUNCTION: function of the lymphatic system is to return to the blood the excess fluid (lymph) filtered across capillary walls into interstitial spaces. plays a central role in the body’s defenses. Located
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The Nervous System is the system of cells‚ tissues‚ and organs that regulates the body’s responses to internal and external stimuli. In vertebrates it consists of the brain‚ spinal cord‚ nerves‚ ganglia‚ and parts of the receptor and effector organs. Your nervous system is composed of the central nervous system‚ the cranial nerves‚ and the peripheral nerves. The brain and spinal cord together form the central nervous system. The cranial nerves connect the brain to the head. The four groups of nerves
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Biology 3201 1. Unit 1- Maintaining Dynamic Equilibrium II Ch. 12 – The Nervous System (pp. 390-419) 12.1 – Structure of the Nervous System nervous system: a high-speed communication system which delivers information to and from the brain and spinal cord and all over the body. In any nervous system‚ there are 4 main components: (1) sensors: gather information from the external environment (sense organs) (2) conductors: carry information from sensors to modulators or from modulators to effectors (nerves)
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