the body it makes it’s way to the spinal cord via the peripheral nervous system’s afferent nerves (nerves that carry impulses toward the CNS). Once the virus gets into the spinal cord‚ it’s quickly sent up to the brain‚ where it begins replicating itself inside the mind’s nerve cells‚ destroying them in the process (C.O.). When it reaches the brain it moves through the efferent nerves (they carry impulses from the CNS) to the salivary‚ glands‚ they cause increased salivation. The virus does that
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Tissues Tissues are sets of the same cells carrying out particular functions these include; epithelial‚ connective‚ muscle and nervous. Epithelial tissues are the inside layer of internal and external surfaces and body cavities‚ including ducts carrying secretions from glands. They may be composed of some layers of cells‚ called compound epithelia or just a single layer which is known as simple epithelia. The lowest or bottom layer of cells is attached to the basement membrane for support and
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Spina Bifida comes from the word for “split spine in Latin (Webster‚ 1997). It is a serious birth defect that occurs when the tissue surrounding the developing spinal cord of a fetus doesn ’t close properly. Its part of a group of birth defects called neural tube defects (Spinal Bifida Association of America‚ 2006). The neural tube is the embryonic structure that eventually develops into the baby ’s brain and spinal cord and the tissues that enclose them. In normal circumstances‚ the neural
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parasympathetic effects by binding to muscarinic cholinergic receptors‚ which activate G-proteins and opens potassium channels known as hyperpolarisation‚ while closing sodium and calcium channels (Pal and Pal‚ 2006). The action of acetylcholine in inhibiting impulse formation‚ conduction and in weakening auricular contraction‚ exhibits a stimulating effect‚ particularly on the ventricle (McDowall‚
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falsifiability Must be able to show a claim is true or false through observation Stimulus-Response Psychology Sigmund Freud - psychoanalysis Focus on unconscious determinants of behaviourUnlearned biological instincts‚ especially sexual and aggressive impulses‚ influence thoughts‚ feelings and behavioursHumanistic Approach Optimistic view of human behaviour Humans are free and in control of their own destiny Emphasizes the human desire for personal growth All humans
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cones. Cones are any of the cone shaped receptors in the retina that respond to color. Rods are the long shaped receptors that respond to faint light. The eye perceives optic illusions because of blind spots in the eye that are due to where the optic nerve enters the eye and is lacking rods and cones. This area is insensitive to light; the brain will often assume what is there and fills it in with what makes sense. 10. How does an error in the structure or function of the eye relate to disease or
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with human biology. 2. Explain why‚ at every level‚ our existence is both part of a larger system and a combination of smaller systems. 3. Describe the structure of a neuron and the pro cess by which an action potential is triggered. 4. Describe how nerve cells communicate‚ and dis cuss the importance of neurotransmitters for human behavior. 5. Discuss the significance of endorphins‚ and ex plain how drugs influence neurotransmitters. 6. Identify the major divisions of the nervous sys tem and their
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BRAINPORT VISION DEVICE By D.KALAIVANI R.PARVATHI DEVI ABSTRACT “BRAINPORT DEVICE” The device which sends visual input through tongue in much the same way that seeing individuals receive visual input through the eyes is called the “Brainport Vision Device”. BrainPort could provide vision-impaired people with limited forms of sight. To produce tactile vision‚ BrainPort uses a camera to capture visual data. The optical information
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Hypertension is a common health problem especially among people over age of 60 years. This disease is diagnostic when a patient blood pressure is more than 140 to 159 over 90 to 99. Blood pressure refers to the pressure that blood applies to the inner walls of the Diabetes is an endocrine system disorder that occurs when the body is unable to control or balance the amount of sugar in blood and within bodily tissues. You know that the human body is like a machine‚ with organ systems that are specialized
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long‚ thin fiber that transmits signals away from the soma to other neurons or to muscles or glands. * The axon ends in a cluster of terminal buttons‚ which are small knobs that secrete chemicals called neurotransmitters. * The Neural Impulse: Using Energy to Send Information * The Neuron at Rest: A Tiny Battery * The resting potential of a neuron is its stable‚ negative charge when the cell is inactive. * The Action Potential * An action potential is
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