Homeostasis - Thermoregulation Homeostasis is the ability of a cell or organism to maintain a stable internal environment despite fluctuating external environmental conditions. An animal will maintain this state of equilibrium through adjustment mechanisms that keep the conditions of its cells and body within a narrow range (SOC 2 n.d.). Homeostasis is crucial to the survival of an organism‚ by maintaining a stable environment‚ it enables cells to be functioning optimally‚ giving an organism the
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functional goals. The latest progress report noted that the patient has left upper extremity pain. The exam revealed moderate spasticity and tenderness over the flexor-extensor forearm. She has a positive compression of the left median and radial nerves of the extensor and flexor forearms. It was noted that she has not received medications or occupational therapy. The guidelines support an initial trial of 6 sessions of PT. Additional requests should include objective functional improvement. Recommend
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units in the body that respond to an adequate stimulus Photoreceptors – detect light Thermoreceptors – detect changes in temperature Proprioreceptors – detect changes in the position of the body and in tension Pain receptors (nociceptors) – naked nerve endings throughout much of body Mechanoreceptors – receptive to mechanical stimuli (touch receptors or receptors in ear that respond to sound or motion) Baroreceptors – respond to changes in blood pressure Chemoreceptors – respond to changes in
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Chapter 18: The Cardiovascular System: The Heart Homework Questions/Objectives (1-18) Heart Anatomy 1. Describe the size‚ shape‚ location‚ and orientation of the heart in the thorax. • 250 to 350 grams about the size of a fist‚ within the mediastinum and tilts toward the left side of the body√ 2. Name the coverings of the heart. • Pericardium – doubled-walled sac that encloses the heart. • Fibrous Pericardium – superficial part of
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ANTHROPOLOGY 316: Human Anatomy & Physiology I Lab Fall 2013 Lab L05-7052 Friday 12:35-2:35 AS 11 Lecturer: Kelli H. Tamvada‚ M.A. Contact Information: KTamvada@albany.edu Office location: AS 235 Office hours: Tuesdays 3:00-5:00‚ or by appointment Required Texts: Heisler‚ R. E.‚ Hebert‚ N.‚ Chinn‚ J. Krabbenhoft‚ K. M.‚ and Malakhova‚ O. (2014) PAL 3.0 Lab Guide: practical anatomy lab. Pearson Zao‚ P.‚ Stabler‚ T.‚ Smith‚ L.‚ Lokuta‚ A.‚ Griff‚ E. (2014). PhysioEx 9.0 Laboratory
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distance between these nodes is between 0.2 and 2 mm. Action potentials traveling down the axon "jump" from node to node. This is called saltatory conduction‚ which means‚ "to jump”. Saltatory conduction is a faster way to travel down an axon than traveling in an axon without myelin. In other words the main role of the myelin sheath is to speed up nerve cell communications from the brain and spinal cord or to other parts of the body.
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Define the following terms: 1. Horizontal Cable : A type of inside cable designed for horizontal use in non-plenum areas. While horizontal cable must be fire retardant‚ the National Electrical Code (NEC) specifications are not as demanding as those governing the use of plenum cable or riser cable. See also NEC‚ plenum‚ plenum cable‚ and riser cable. 2. Backbone Cable : Backbone cabling is the inter-building and intra-building cable connections in structured cabling between entrance facilities
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model‚ for platinum‚ calculate the number of delocalised electrons per unit volume‚ their thermal velocity at 20°C and the average scattering length‚ given the following data: Valency: 2 Density: 21450 kg/m3 Atomic mass: 195 Conductivity: 9.5 x 106 (m)-1 Temperature: 293K Number of delocalised electrons per unit volume: n=(21450*1000*(6.02*1023)*2)/195 n=1.3244*1029 electrons/m3 Thermal Velocity at 293K: Vthermal = Vthermal = Vthermal =115391.7586ms-1 Average scattering length:
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Masses of myelinated nerve fibers appear a. white. b. gray. c. brown. d. transparent. Answer: A 2. Which of the following lists the parts of a reflex arc in the correct sequence? a. receptor‚ sensory neuron‚ motor neuron‚ interneuron‚ effector b. effector‚ receptor‚ sensory neuron‚ motor neuron‚ interneuron c. effector‚ sensory neuron‚ receptor‚ interneuron‚ motor neuron d. receptor‚ sensory neuron‚ interneuron‚ motor neuron‚ effector Answer: D 3. When a nerve fiber is polarized
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applied to an object and the greater the size of the force applied‚ the greater the object’s impulse! Coefficient of Restitution * The COR is the ratio of the velocities after compared with before an impact‚ and this value will change for different impact situations. * Rebound to the same height or with same velocity (e.g. collision during game of pool) = Coefficient of 1; perfectly elastic collision. * No rebound = Coefficient of 0; perfectly inelastic collision. * Rebound
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