the stimulus going to the receptor surface. Receptors are electrically polarized cells and therefore have a resting membrane potential. Stimuli produce‚ in the appropriate receptors‚ a change in the electrical properties that is known as the receptor or generator potential. The two ways in which sensory stimuli can act on receptors to change their resting membrane potential (RMP) are by directly acting on ion channels or causing production of second messengers that act on ion channels. The two types
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BIO 210 Anatomy & Physiology I Study Guide for Cumulative Final Exam 1. Know the Student Learning Objectives given on the course syllabus. 2. Be able to define: anatomy chemistry positive feedback anabolism physiology biochemistry negative feedback catabolism histology homeostasis metabolism 3. Be able to identify specific examples of homeostasis and negative feedback regulation with blood glucose and calcium levels and blood pressure control. 4. Be able to place each level
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Self-renewal and differentiation are fundamental stem cell fate decisions‚ which are essential for normal tissue development‚ homeostasis‚ and repair actin cytoskeleton and Rho-GTPases‚ mediate downstream signal transduction Serum response factor (SRF) and yes-associated protein (YAP) are two examples of mechano-sensitive transcription factors‚ which have recently been implicated in epidermal and mesenchymal stem cell differentiation Lab notes: Passive processes: transport driven by
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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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Drugs & Behavior EXAM I Study Guide Every correct answer is on the test…MC & Matching terms with definitions. No short answers… Terms: Psychopharmacology study of the action of drugs on living organisms Specific Drug Effects: result from physical and biochemical interactions of a drug with its target tissue Therapeutic effects- desirable effects of drug-receptor binding Side effects- undesirable effects of drug-receptor binding Non-specific Drug Effects: effects of a drug not based on
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Neurons don’t travel‚ the impulses they transmit do. As a simple analogy‚ a neuron is like an electric cord: it stays still but an electric current flows through it. In the same way‚ a neuron stays still and electrical potentials (graded potentials and an action potential) move along its membrane fr... 4. What part of the neuron receives information? The function of the dendrites is to receive informat 5. How large are neurons? Neurons range from about
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Tea production potential in Pakistan By Mohammed Arifeen Tea is the world’s most favored beverage due to its general acceptability‚ comparative cheapness and advantageous effects. It is the second most drank beverage after water. The tea plant originated from South East China and slowly spread to Indo-Pak subcontinent‚ Sri Lanka and further into tropical and sub tropical countries Pakistan was a bulk producer and exporter of tea until 1970 but after the loss of its eastern wing (than known
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your mobile phone and any wireless electronic devices. You are not allowed to use these devices any time during the exam. You cannot put them on your desk or in your pockets. (9) Hand in the answer sheet separately. Only the answer sheet will be graded. Formula and constants: acceleration due to gravity = 9.80 m/s2 1 1. In the figure‚ when m slides down from M‚ which direction is the friction force on M by m? (a) Left (b) Right (c) Direction A (d) Opposite to direction A (e) No
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In the lab‚ five test were completed. The Bruce Protocol Test‚ Balke Treadmill Test‚ Q Test‚ Wingate‚ and Cooper Run. The Bruce Protocol Test‚ Balke Treadmill Test‚ and Q Test are GXT test (Graded Exercise Test). The GXT showed how the body responds to exercise. All of these tests were voluntary which allowed the subject to stop before hitting their maximum effort. It will be hypothesized that for each test completed time‚ grade percentage‚ and/or speed made a difference. Everyone has different anaerobic
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back to your set point. An example of this would be blood pressure or heart rate. Positive feedback loops effect the homeostatic condition by using amplification to increase the change and stimulus. For example‚ labor‚ platelate plugs‚ and action potentials are all positive feedbacks loops. 2. Describe the four physiological themes discussed in the book that apply to all living organisms. Theme 1: Structure and function are closely related: by dividing space into compartments (structure) it
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