ANATOMY & PHYSIOLOGY of the EYE Even though the eye is small‚ only about 1 inch in diameter‚ it serves a very important function -- the sense of sight. Vision is by far the most used of the five senses and is one of the primary means that we use to gather information from our surroundings. More than 75% of the information we receive about the world around us consists of visual information. The eye is often compared to a camera. Each gathers light and then transforms that light into a "picture
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ANATOMY ASSIGMENT- THE MUSCULAR SYSTEM Q9.Explain how the muscle produces movement and different types of contraction.(M3) Sliding filament theory. Each muscle fibre is made up of smaller fibres called myofibrils. These contain even smaller structures called actin which is a thin‚ contractile protein filament‚ containing ’active’ or ’binding’ sites and myosin filaments which are a thick‚ contractile protein filament‚ with Myosin Heads. These filaments slide in and out between each other to form
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ANATOMY AND PHYSIOLOGY Chronic Kidney Disease Cardiovascular System The cardiovascular system is sometimes called the circulatory system. It consists of the heart‚ which is a muscular pumping device‚ and a closed system of vessels called arteries‚ veins‚ and capillaries. As the name implies‚ blood contained in the circulatory system is pumped by the heart around a closed circuit of vessels as it passes again and again through the various "circulations" of the body. The Heart * The heart
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Key Terms & Concepts Anatomy and Physiology 1H06‚ W2012 You should be able to describe and/or demonstrate an understanding of the following: *this is not an exhaustive list… Cardiovascular Anatomy • Heart: Location (Mediastinum)‚ Base vs Apex‚ Major Landmarks (SVC‚ IVC‚ Pulm. Trunk‚ Aorta) • Relational Anatomy: Structures Above‚ Below‚ Anterior & Posterior to Heart • Surface Features: Anterior & Posterior (Atria‚ Ventricles‚ Great Vessels‚ Sulci) • Sulci:
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Anatomy and physiology of the brain and spinal cord The brain is a spongy organ made up of nerve and supportive tissues. It is located in the head and is protected by a bony covering called the skull. The base‚ or lower part‚ of the brain is connected to the spinal cord. Together‚ the brain and spinal cord are known as the central nervous system (CNS). The spinal cord contains nerves that send information to and from the brain. The CNS works with the peripheral nervous system (PNS). The PNS
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ANATOMY AND PHYSIOLOGY The pelvis is a large semicircular bone complex that forms the base on which the torso and upper body are positioned. The pelvis‚ which is a rigid and inflexible portion of the skeleton‚ is built to provide a foundation of the movement of other parts of the anatomy‚ particularly the back and the legs. The pelvis also permits the weight of the entire upper body to be evenly distributed
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``DIFINITION The muscular system is an organ system consisting of skeletal‚ smooth and cardiac muscles. It permits movement of the body‚ maintains posture‚ and circulates blood throughout the body Muscles provide strength‚ balance‚ movement and heat for the body to keep warm There are three distinct types of muscles: skeletal muscles‚ cardiac or heart muscles‚ and smooth (non-striated) muscles Skeletal muscle is a form of striated muscle tissue existing throughout the human body‚ and which
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I. ANATOMY AND PHYSIOLOGY OF THE HEART I. LOCATION OF THE HEART The heart is located in the chest between the lungs behind the sternum and above the diaphragm. It is surrounded by the pericardium. Its size is about that of a fist‚ and its weight is about 250-300 g. Its center is located about 1.5 cm to the left of the midsagittal plane. Located above the heart are the great vessels: the superior and inferior vena cava‚ the pulmonary artery and vein‚ as well as the aorta. The aortic arch lies
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The brain and the spinal cord are protected by A. a parietal layer. B. a visceral layer. C. mucous membranes. D. serous membranes. E. the meninges. 3. The system that exchanges carbon dioxide and oxygen and helps in speech is the _____ system‚ whereas the system that transports oxygen and carbon dioxide is the ______ system. A. respiratory; urinary B. circulatory; digestive C. respiratory; digestive D. circulatory; urinary E. respiratory; circulatory 4. The _______ cavity contains
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Osteoporosis Anatomy & Physiology 250 CASE - Module 2 Osteoporosis is a condition of low bone density that can progress silently over a long period of time. Osteoporosis has no symptoms until a fracture occurs‚ which causes bone pain‚ height loss‚ and abnormal spine curvature. If a fracture is determined to be due to osteoporosis‚ it is considered a pathological fracture‚ which is a break of a diseased or weakened bone without any identifiable trauma or following a minor injury that would
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