HES 202

HES 202 EXAM QUESTIONS AND ANSWERS LATEST UPDATE What are the 3 key factors in determining fuel utilization during exercise Intensity, Duration, Availability Characteristics of type 1 muscle fibers Slow twitch, fatigue resistant, more mitochondria, more capillaries to deliver o2, small motor, aerobic Characteristics of type 2 muscle fibers fast twitch, fatigue quicker, greater force, Anaerobic, less mitochondria What is EPOC Excessive post oxygen consumption, still circling fight t...

HES 202 EXAM QUESTIONS AND ANSWERS LATEST UPDATE Force is controlled by: 1. Altering the # of active MUs (de/recruitment) 2. Changing Frequency of activation (rate coding - MU discharge rate) know how to draw this Saltatory conduction propagation of action potential down the axon Myelination insulates the axon and prevents movement of ions (Na+ and K+) across the membrane benefits to saltatory conduction and myelination 1. Increases conduction velocity without a change in axon diam...

HES 202 EXAM QUESTIONS AND ANSWERS LATEST UPDATE Define physiology and exercise physiology. Physiology: Study of the function of cells, tissues, organs, and systems Exercise: Study of how acute and chronic exercise influences the function of cells, tissues, organs, and systems List at least five career opportunities for students with a bachelor's degree in exercise physiology, kinesiology, or health & exercise science and graduate school programs a degree in one of these fields would ...

HES 202 MIDTERM EXAM QUESTIONS AND ANSWERS LATEST UPDATE what a motor unit - motor neuron - all muscle fibers it innervates Whats the functional Unit of all movements Motor Unit How is force controlled by the MU 1. Rate coding (firing rate) 2. Frequency of firing 3. Motor unit recruitment If you increase force you _____ MU Add more Motor Units Motor Unit Diagram Axon Hillocks allows us to generate an Action Potential - because exicitatory post-synaptic potentials summate there...

HES 202 EXAM QUESTIONS AND ANSWERS LATEST UPDATE motor unit size principle motor units are recruited in order from small to large Functional consequences of size principle Simplifies the task of modulating force not necessary for higher centres to select specific combinations of MUs Functional consequences of size principle 2 Ensures a smooth increase in force production Functional consequences of size principle 3 Minimizes fatigue as slow twitch, fatigue-resistant muscle fibres are ...

HES 202 EXAM QUESTIONS AND ANSWERS LATEST UPDATE Steady state New normal during exercise what is a Low doses of harmful stress that can give beneficial adaptive response in the cell or organ system Hormetic effect Labatory research Laboratory research is research done in a lab with particular procedures. The researchers have control of the environmental conditions. Field research research done in natural, real-life settings outside the laboratory basic research pure science that ai...

HES 202 EXAM QUESTIONS AND ANSWERS LATEST UPDATE What is the definition of homeostasis? What are some examples of cellular and whole body homeostasis? Homeostasis is the body's ability to maintain a stable internal environment. Cellular examples include temperature regulation, while whole body examples include blood glucose and body temperature regulation. What is the rate of O2 consumption at rest? What else is this called? Resting oxygen consumption is approximately 3.5 ml/kg/min or...

HES 202 EXAM QUESTIONS AND ANSWERS LATEST UPDATE is a specialized receptor that is located between the muscle and the tendon Golgi tendon organ the Golgi tendon organ is located in ... with the muscle and signals information about the... or, ... being applied to the muscle. series, load, force A Golgi tendon organ is made up of a capsule containing numerous ... fibers, collagen The organ is innervated by primary afferents called Group ... fibers, which have specialized endings that we...

HES 202 EXAM QUESTIONS AND ANSWERS LATEST UPDATE Physiology Study of the function of cells, tissues, organs, and systems Exercise Physiology Study of how acute and chronic exercise influences the function of cells, tissues, organs, and systems Systems of Body Organization - Atoms - Molecules - Cells - Tissue - Organs - Organ systems Evidence-Based Practice Refers to the integration of research evidence, professional training and client/patient values to choose the best course of...

HES 202 EXAM QUESTIONS AND ANSWERS LATEST UPDATE what determines tactile acuity receptive fields, density of receptors, representations within somatosensory cortex Kinesthesis conscious awareness of position and movement of the body in space proprioception Subconscious mechanism by which body is able to regulate posture & movement, reflexive 4 major contributors to kinesthesis 1. Sense of position and movement of the limbs 2. sense of tension or force 3. sense of effort or heavines...