The Disease Process of Atherosclerosis & its Complication; Myocardial infarction Loretta Zambito McMaster University HTH SCI 2C06 Dr. Ruth Hannon March 11‚ 2013 Atherosclerosis is the primary topic for this research paper. It is a disease process that can lead to many complications‚ one of which is called myocardial infarction; otherwise known as a heart attack. Atherosclerosis‚ or the hardening of the arteries‚ is defined as a disease characterized by abnormal thickening of the
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Long Answer Question 2 3) Calcium in the diet of a teenager is actively absorbed in the small intestine and transferred into the intestinal capillaries. Describe the route this calcium would follow to end up in the upper arm. Describe in detail the role of calcium at the neuromuscular junction as well as its role in the mechanism of muscle contraction and relaxation of the triceps. Considering the function of calcium in bone growth‚ explain in detail how the humerus would grow in length. Calcium
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Bacteria have to developed a variety of mechanisms that allow them to enter the cells of their host‚ whether to replicate or to transmit the pathogen. One method of this is through pili. Pili are thin rods anchored to the outer membrane of bacteria with an adhesin at the tip. This adhesin is what gives the bacteria their binding specificity. Pili can serve a variety of roles such as‚ adhesion or the transfer of material during bacterial conjugation. Fimbria are a type of pili that are solely for
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Question 1 1 out of 1 points A thick 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
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Anatomy Exam Chapters 5‚6‚8‚9 Heat-Loss Center (page 840) * behavioral changes- getting shade‚ going into water * vasodilation and shunting of blood to skin surface- inhibition of vasomotor center causes warm blood flow to the surface‚ skins turns red‚ skin temperature rises‚ radiational and convective losses increase * sweat production- sweat glands are stimulated to increase secretory output‚ perspiration occurs‚ evaporative heat losses accelerate * respiratory heat loss- respiratory
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Lab 4: Skeletal Muscle Function Exercise 5: The Length-Tension Relationship Materials and Methods In this experiment I used a frog anesthetized with ms222. The frog’s skin is cut and removed from both the legs‚ the Achilles tendon is cut and the tendon and calf muscle are removed from the lower legs. The femur muscle is also cut. Attached to the legs are femur clamps which are connected to the transducer arm‚ stimulation electrodes are then positioned against the muscle. I plugged the output
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The most common type of deaf-blindness disease in the world is Usher Syndrome. Usher Syndrome is a clinically and genetically heterogeneous disease. It is inherited in an autosomal recessive inheritance pattern. Worldwide‚ the chance of a baby being born with Ushers Syndrome is approximately 1 in every 25‚000 babies. To date‚ there are roughly 50‚000 people with Ushers Syndrome living in the United States. As stated above‚ Ushers Syndrome is an inherited disease characterized by hearing impairment
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Name_______________________Period___________ Chapter 6: A Tour of the Cell Concept 6.1 Biologists use microscopes and the tools of biochemistry to study cells 1. The study of cells has been limited by their small size‚ and so they were not seen and described until 1665‚ when Robert Hooke first looked at dead cells from an oak tree. His contemporary‚ Anton van Leeuwenhoek‚ crafted lenses and with the improvements in optical aids‚ a new world was opened. Magnification and resolving power limit
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change which moves tropinin-I away from actin/tropomyosin. Tropomyosin then moves to clear the myosin binding site on the actin thus allowing cross bridge attachment. Hence‚ contraction is critically dependent on intracellular calcium concentrations. The process of cross-bridges formation and the shortening of the individual cardiomyocyte require ATP (phosphate group). The result of the shortening is contraction when the myosin heads swivel along the actin filaments of the cardiomyocytes. The greater
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Activity 1 – The Muscle Twitch and Latent 1) Define the terms skeletal muscle fiber‚ motor unit‚ skeletal muscle twitch‚ electrical stimulus‚ and latent period. Skeletal Muscle Fiber: Skeletal muscle cells that are composed of hundreds to thousands of individual cells that produce muscle tension. These fibers are what move our bodies and generate muscle tension/force that enables us to have manual dexterity. Motor unit: consists of one motor neuron and all of the skeletal muscle fibers that
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