1a) 1b) Sedentary: < 45 ml/kg/min McArdle‚ W.D.‚ Katch‚ F. I.‚ & Katch‚ V. L. (2006) Untrained: 45 to 50 ml/kg/min McArdle‚ W.D.‚ Katch‚ F. I.‚ & Katch‚ V. L. (2006) Well-Trained: 50 to 60 ml/kg/min McArdle‚ W.D.‚ Katch‚ F. I.‚ & Katch‚ V. L. (2006) Highly Trained: 60-70 ml/kg/min McArdle‚ W.D.‚ Katch‚ F. I.‚ & Katch‚ V. L. (2006) Elite: > 70 ml/kg/min Lucia‚ A.‚ Hoyos‚ J.‚ Pérez‚M.
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myelinated. 4. Postganglionic Neuron – Second motor neuron. 5. Autonomic Ganglion – Cell body of the postganglionic neuron is located here outside the CNS. 6. Postganglionic Axon – Extends to the effector organ; nonmyelinated. 7. Acetylcholine (ACh) – All somatic motor neurons release this at their synapses with skeletal muscle fibers.; effects always stimulatory; preganglionic fibers release this as well. 8. Nonepinephrine (NE) – Autonomic postganglionic fibers release this by sympathetic
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Section I – Multiple choice: (65 points; 2.5 points each). Bubble your answers on your scantron. 1. A motor unit refers to a. a single muscle fiber plus all of the motor neurons that innervate it b. all of the motor neurons supplying a single muscle c. *a single motor neuron plus all the muscle fibers it innervates d. a pair of antagonistic muscles e. all of the muscles that affect the movement of any given joint 2. Which of the following is NOT associated with the thin filaments
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LABORATORY REPORT Activity 2: Twitch Contractions and Summation PREDICTIONS Effect of Muscle Fiber Length on Contraction 1. As muscle fiber length increases: contraction force increases‚ becoming maximum at an optimal length‚ then decreasing at longer lengths. Effect of Stimulation Frequency on Contraction 2. As the frequency of stimulation increases‚ the force of contraction: increases. MATERIALS AND METHODS Measurement of Threshold Stimulus 1. Dependent Variable: contraction force
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* Difference in Somatic and Autonomic Nervous System * The somatic nervous system consists of nerves that provide VOLUNTARY control over skeletal muscles * The autonomic nervous system exerts INVOLUNTARY control over the contraction of smooth muscle‚ cardiac muscle‚ and glandular activity. * Basic function of the Sympathetic VS Parasympathetic Systems * Sympathetic system= “fight of flight” * Parasympathetic system= “rest and digest” * Both autonomic branches are required
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ADVISORY: Notes from the 2010 FLCC Critical Care Transport Paramedic class as was recorded solely by Marcus LaBarbera- NYS Paramedic. I do not apologize for any spelling or grammar errors‚ lack of completeness‚ or recording errors. These are primarily personal notes but I am offering them to the community as an additional study resource. I will take no responsibility for persons who fail any quiz or test as a result of this document. Always consult the text books recommended specifically by
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focus on Organophosphate (OP) pesticides and their mechanisms with respect to human health. The primary target for OP pesticides is the inhibition of acetylcholinesterase (ACheE) (Casarett 2008‚ p.890) where its normal action is to hydrolyze acetylcholine (ACh)‚ a neurotransmitter which occurs throughout the central (autonomic) nervous system and peripheral (somatic) nervous system where it binds to and stimulates cholinergic receptors‚ specifically muscarinic and nicotinic receptors (Mileson
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Lab #3: Isotonic contraction and the effect of load on skeletal muscles Abstract The job of the motor nervous system is to control certain elements in muscles simultaneously to ultimately produce movement. Movement of the body is the result of specialized cells directly associated with skeletal muscle. Skeletal muscles are voluntary muscle and must contract before movement can occur. We know the muscle team moving the arm is formed at the biceps and triceps. Biceps can bend the elbow‚ but
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SENSORY ORGANS Introduction The knowledge of the world around us stimulates our sensory organs to provide us with the information of what is going on around us. All sensory information is picked up by the sensory receptors‚ specialised cells that monitor internal and external conditions. Examples of sensory organs are: SENSE ORGAN Eye Ear (Organ of Corti) Ear (Semicircular Canals) Ear (utricle and saccule) Olfactory mucous membrane Taste Buds Skin Skin Skin Skin Various Muscle Spindle Golgi tendon
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HUMAN PHYSIOLOGY REPORT DAPHNIA Aim The aim of this experiment is to investigate the effect of temperature and various substances on the heart beat of Daphnia‚ a water flea. Introduction Daphnia belongs to a group of small‚ freshwater crustaceans of the order Cladocera commonly called water fleas. They are very suitable for laboratory studies due to the nature of their transparent exoskeletons. Hence‚ it is possible to watch Daphnia hearts without dissecting them. Daphnia is ectothermic and
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