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There should be a gradual return to full activity buy 100mg minocin visa, with ade- vious discomfort. When he arose from the waiting-room quate time for healing and repair, without any sudden in- chair, it was with some difficulty and with considerable crease in the use of the muscle. The initial precipitating be- assistance from his arms and his left leg. The use of the anti-inflammatory medication should be lim- backyard tree for his children. At one point during the ited because its continued use has been shown to delay the work, he jumped to the ground from a ladder leaning healing process, and it could also mask warning signs of against the tree, a distance of about 4 feet. Clin Sports Med considerable discomfort, and the pain did not lessen 1997;16:419–434. Am J Sports Med Physical examination reveals a somewhat swollen as- 1996;24:S2–S8. The area is tender to the touch, but the pain does CASE STUDY FOR CHAPTER 10 not involve the knee joint. Using the left leg for compari- son, he is considerably impaired in his ability to extend Heart Failure the lower portion of his right leg and doing so causes A 50-year-old man consulted his family physician with great discomfort. He is given a few days’ supply of a non- and somewhat short of breath from walking from his car (continued) CHAPTER 10 Cardiac Muscle 189 to the office. Did the beneficial effects of his therapy relate more to formation: He has been a light smoker for most of his changes in contractility or to changes in the mechanical sit- adult life, although he has tried to quit; he attributes his uation of the heart muscle? What is the benefit of a drug that tends to relax both arterial while, to the smoking habit.

The insula lies deep within the (b) The cerebellum is concerned with around axons in the PNS; cerebrum and cannot be seen in an coordinated contractions of skeletal oligodendrocytes form myelin layers external view order 50mg minocin with mastercard. Brain waves generated by the cerebral perform a phagocytic function in the cortex are recorded as an Myelencephalon (pp. The medulla oblongata is composed of the substances from the blood to the CNS; valuable diagnostic information. The white matter of the cerebrum consists spinal cord and contains nuclei for several cerebrospinal fluid in the CNS; and of association, commissural, and autonomic functions. Basal nuclei are specialized masses of gray reticular activating system in arousing the (a) The neuroglia that surround an axon matter located within the white matter of cerebrum. The diencephalon is a major autonomic outer periosteal layer and an inner 4. The thalamus is an ovoid mass of gray a single layer surrounded by the vascular (a) Sensory (afferent) neurons are matter that functions as a relay center for epidural space. The hypothalamus is an aggregation of surrounding the subarachnoid space, multipolar. The epithalamus contains the pineal smooth muscle, cardiac muscle, gland and the vascular choroid plexus and glands. Nervous Tissue and the © The McGraw−Hill Anatomy, Sixth Edition Coordination Central Nervous System Companies, 2001 398 Unit 5 Integration and Coordination Ventricles and Cerebrospinal Fluid 4. The blood-brain barrier determines which (b) The conus medullaris is the terminal (pp. The lateral (first and second), third, and the extracellular fluid of the brain. Ascending and descending spinal cord continuous with the central canal of the 1. Cerebrospinal fluid is continuously formed and two longitudinal grooves that decussate (cross over) in the spinal by the choroid plexuses from blood plasma partially divide it into right and left cord or in the medulla oblongata of and is returned to the blood at the halves.

Two people purchase 50mg minocin amex, one highly trained and should avoid exercise that with both strenuous dynamic and one not, each exercising at 75% of the (A) Causes fatigue isometric exercise included. After two maximal oxygen uptake, become (B) Is prolonged years, her maximal voluntary fatigued (C) Uses untrained muscle groups contraction of many major muscle (A) For similar physiological reasons (D) Is substituted for isometric exercise groups and her maximal oxygen (B) Very slowly (E) Involves an intermediate muscle mass uptake, are both increased 30%. In a patient with heart disease, a Predictably, pulmonary function tests (D) While performing equally well for treadmill test involving graded show at least a short period of time dynamic exercise results in falling (A) A 30% rise in vital capacity (E) Despite much higher circulating blood pressure at each exercise level. These vital capacity exercise test on a treadmill while results arise from inadequate cardiac (C) An increase in resting pulmonary showing a modest rise (25%) in mean output during exercise because the diffusing capacity of 30 to 50% arterial blood pressure. In contrast, baroreceptors, during exercise, (D) A 25% increase in maximal forced during the highest level of exercise at (A) Reset blood pressure to a lower expiratory flow rate the end of the test, an indirect method level (E) Decreases in residual volume and shows that cardiac output has risen (B) Are “turned off” airways resistance at rest 300% from rest. In older adults at risk for falls, that during graded, dynamic exercise training osteoporosis, and fractures, a program to exhaustion, systemic vascular (D) Are decreased in sensitivity by of weight-bearing exercise resistance training (A) Increases the risk of hip fracture (A) Is constant (E) Reset blood pressure to a higher (B) Decreases bone mineral density (B) Rises slightly level (C) Leaves gait, coordination, (C) Falls only if work is prolonged 8. A man with a family history of heart proprioception, and reaction time (D) Falls dramatically disease has both diabetes and unaltered (E) Cannot be measured hypertension. In addition, falls, and fractures disease and compromised kidney his LDL cholesterol is elevated and his (E) Is less valuable than dynamic function asks if exercise will alter blood HDL cholesterol is reduced, compared exercise during water immersion flow to either the gastrointestinal tract with individuals with low 12. When at risk for osteoporosis, starts an vasoconstriction in both the renal and exercise and diet are recommended, exercise class that emphasizes weight- splanchnic vascular beds during this individual asks what effect a long- bearing activities and development of exercise term exercise program will have on the muscle strength. The answer is that extensive muscle soreness after the first (B) Occurs only after prolonged exercise, over time, will two sessions, indicating that the training (A) Have no independent effect on exercise that she performed (C) Helps maintain arterial blood blood cholesterol levels (A) Involved isometric contractions pressure (B) Elevate both HDL and LDL (B) Produced muscle ischemia (D) Allows renal and splanchnic flows (C) Lower HDL and LDL, thereby (C) Was actually most effective for to parallel cerebral blood flow lowering total cholesterol increasing muscle endurance (continued) 564 PART VIII TEMPERATURE REGULATION AND EXERCISE PHYSIOLOGY (D) Involved eccentric contractions His specific concern is the impact that ity, and disease. Physiol Rev (E) Required at least 50% of the an acute episode of exercise will have 2000;80:1215–1265. He is correctly informed Waging war on modern chronic dis- knee early in the season. The knee that during exercise, an important eases: Primary prevention through ex- requires immobilization for six weeks, factor to consider is that ercise biology. J Appl Physiol after which time the athlete undergoes (A) Muscle glucose uptake decreases in 2000;88:774–787.