March 26‚ 2013 Lecture -The function of the eye is to convert photons of light into action potentials (nerve impulses). -The inner layer is a nervous tunic (made out of nerve cells)=retina. -Refraction: Bends light. -The purpose of the cornea and the lens is to take an object and focus every little detail of the object on the retina on the back of the lens. Upside down and backwards. -When light goes through medias‚ it bends. -Lens are suspended by ligaments behind the pupil. Suspensory ligaments
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The human heart is a very interesting and complicated part of the body‚ that some struggle to understand. Blood is also a stimulating part of the human body that is really great to learn about‚ as well as blood pressure. Heart disease is a very common disease that many people face‚ so it is important that people are educated about it. There are two sides to the heart and each side receives and pumps different kinds of blood. The left side of the heart is more muscular because it has to pump blood
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In this examination‚ the outside and inner structures of a sheep’s heart was analyzed and recognized by dismemberment. The heart is a muscle that pumps oxygenated blood and supplements all through the body. A sheep’s heart has four chambers like most well evolved creatures. Two of those chambers are accepting chambers called the privilege and left chamber. The other two chambers are pumping chambers called the privilege and left ventricle. The productivity in the cycle of blood relies on upon the
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What are the coronary circulatory routes and how does it compare to the portal circulatory route you ask? They are both routes but different in many ways because of how they circulate the blood throughout the body. The coronary circulatory system deals with how the blood of the heart circulates to help the heart function itself. But the systemic route differs from the other route. In the systemic route blood is moved through the body providing it with oxygen and nutrients while blood with no oxygen
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Human Physiology Lab Special Senses Cutaneous Senses and Vision September 24/26‚ 2012 Our bodies are capable of sensing a wide spectrum of stimuli. We are consciously aware of some of the information our bodies perceive‚ but much of the information that is sensed is beyond our consciousness. Receptors responsible for perception of stimuli are found in many places: skin‚ eyes‚ ears‚ mouth‚ blood vessels‚ lungs‚ brain—frankly‚ every cell in the body has sensory receptors. These receptors are
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FROG MUSCLE PHYSIOLOGY 2) What was the smallest voltage required to produce max contraction? What proportion of the muscle fibers in the muscle do you think were contracting to produce this maximal response? Muscle fibers act in response to isolated stimuli in an all or none fashion. However‚ a muscle organ‚ such as the gastrocnemius muscle‚ is composed of many individual muscle fibers. It is known that all of the fibers in a muscle do not have the same threshold and that a stimulus applied to
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Laboratory – Muscle Physiology A. MUSCLE TONUS Observations‚ Report and Conclusion: A. Define muscle tonus and give its importance * Muscle tonus refers to a state of slight muscular contraction maintained by synchronous impulses of low frequency‚ discharged by the spinal motor neurons. * Reflex in nature. * Muscle tonus is a small amount of tension in the muscle due to weak‚ involuntary contractions of its motor units. Muscle tonus is important in a sense that it governs the
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(Insert your name here) Needs Analysis Sport: lacrosse and volleyball Athlete: center and defense spec. Gender: female Age: 14-18 18-21 Instructions: * You have a series of 10 worksheets to fill out throughout the semester. Each one pertains to a particular lecture‚ and is due the class period after that lecture. The due dates for each are clearly noted on the top of each worksheet. * Type your answers in the boxes provided. The text boxes can be expanded if necessary
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The Physiology and Pathophysiology of the Skin Abstract The 5-HT3 receptor is a ligand-gated cation channel located in the central and peripheral nervous system; it has also been detected on a variety of other cells. In the periphery‚ it is found on autonomic neurons and on neurons of the sensory and enteric nervous system. In the CNS‚ the 5-HT3 receptor has been localized in the area postrema‚ nucleus tractus solitarii‚ nucleus vaudatus‚ nucleus accumbens‚ amygdala‚ hippocampus‚ entorhinal‚
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Shier‚ Butler‚ and Lewis: Hole’s Human Anatomy and Physiology‚ 13th ed. Chapter 7: Skeletal System Chapter 7: Skeletal System I. Introduction (Outcome 7.1.1) 1. Bones include active‚ living tissues: _____________________ __________________________________________________________________ (Outcome 7.1.2) 2. Bones: support and protect _________________‚ provide points of __________________________‚ house _________________‚ and store _____________________
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