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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filament consists of Answer Selected Answer: D. myosin. Question 2 1 out of 1 points Which of the following structures is most like an exoskeleton? Answer Selected Answer: E. a suit of armor Question 3 1 out of 1 points Which of the following structures constitutes part of the axial skeleton? Answer Selected Answer: C. skull Question 4 1 out of 1 points Which of the following attaches the forelimbs to the axial skeleton in a human? Answer Selected Answer: E. shoulder
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the mitral valve closes. C. the mitral and tricuspid valves close. D. the mitral and tricuspid valves open. 6. The loose-fitting sac around the heart is the A. fibrous pericardium. B. visceral pericardium. C. epicardium. D. endocardium. 7. The skeleton of the heart consists of A. bone within the myocardium. B. bone within the interatrial septum. C. fibrous connective tissue in the endocardium. D. fibrous connective tissue encircling the atrioventricular orifices. 8. Which
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1.1 The skin is the largest organ of the body and it acts as a waterproof protector for all the internal organs and it consist of four distinct layers: The epidermis‚ the basement membrane zone‚ the dermis and the subcutaneous layer. The epidermis which is the outer layer and is a protective multi-layered self-renewing structure which varies in thickness depending on which part of the body it covers. The dermis is underneath the epidermis‚ this is a layer of connective tissue which provides the
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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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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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anatomy and physiology lab 1. What are some differences between Judy and Mariah that might make Judy more "at risk" for skin? cancer than Mariah?Judy had a pasty white skin. Therefore‚ her skin had less melanin than Mariah who had black hair and more melanin and are more protected against the uv rays of sun. 2. What observations did Judy make concerning her mole? Her mole changed shaped and turned bigger and its side were jagged. The middle was purplish-black and its edge were darker than
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REVIEW SHEET EXERCISE 6 Cardiovascular Physiology NAME: LAB TIME/DATE: 1. Define each of the following terms: • autorhymicity- The heart is autorhythmic. This means it generates its own rhythmic action potential independent of the nervous system. • sinoatrial node- is the impulse-generating (pacemaker) tissue located in the right atrium of the heart‚ and thus the generator of normal sinus rhythm. • pacemaker cells- are specialized cells that cause involuntary muscles and tissues to
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vertebrae. A. anterior B. superior C. cephalic D. posterior E. inferior 6. The ______ wraps around stomach‚ small intestine‚ and large intestine. A. pleura B. pericardium C. meninges D. visceral peritoneum E. parietal peritoneum 7. The backbone encloses the A. thoracic cavity. B. abdominal cavity. C. pelvic cavity. D. vertebral canal. E. cranial cavity. 8. This system stores 99% of your calcium and is critical for blood cell formation. A. circulatory system B. skeletal
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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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