KIN 310 Exam 2 Review Guide
KIN 310 Exam 2 Review Guide KIN 310
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This 3 page Study Guide was uploaded by Alina Levy on Wednesday December 9, 2015. The Study Guide belongs to KIN 310 at Michigan State University taught by in Fall 2014. Since its upload, it has received 24 views. For similar materials see Physiology Basis of Conditioning in Kinesiology at Michigan State University.
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Date Created: 12/09/15
KIN 310 Exam 2 Answers 1 In the chloride shift a chloride ion changes place with a hydrogen so that the correct electric charge is maintained 2 Which characteristic of muscle fibers determines whether they are type 1 11a or IIx The type of ATPase on the myosin head 3 Which of the following activities would result in the greatest degree of muscle soreness 24 to 48 hours after exercise Running downhill at 6 mph 4 Which of the following combinations would produce the most force Fast eccentric contractions 5 When the nerve cell is in a resting state there is a chemical gradient for potassium to move there is an electrical gradient for sodium to move there is a chemical gradient for sodium to move 6 Contributions to strength gains via neural adaptations Autogenic inhibition 0 Morphological changes in the neuromuscular junction Increased motor unit firing rate 7 During exercise extra muscles are recruited to facilitate ventilation An example of a muscle which helps inspiration is sternomastoid an example of a muscle which helps with expiration is the internal intercostal 8 The strongest chemical stimuli driving changes in ventilation is PC 9 Pulmonary ventilation and pulmonary diffusion are considered to represent external respiration 10 At rest aVOZ difference is approx SmL of 02 per 100mL blood During exercise it is approx 15 ml of 02 per 100mL blood 1 1 Strength training results in hypertrophy and an increase in anaerobic capacity in Type II fibers 12 A wide and myelinated axon results in a faster propagation of an action potential 13 If Marissa s ventilation is 4OLmin and her breathing freq is 19 breaths per minute what is her tidal volume 2105 mLbreath 14 In healthy individuals max ventilation predicted from MW test should be 35 higher than max ventilation measured during exercise 15 Poor core stability can result from excess rotation in the lumbar spine 16 Initial gains in strength are due to neural adaptations after 810 weeks further strength gains are due to hypertrophy 17The purpose of a warm up before a resistance training workout is to reduce risk of injury during the workout 18 Aaron amp Ioel both have a vital capacity of 6 L Aarons FEV1 is 47 L and Ioel s is 41L Which of them has more powerful lungs Which is likely to be diagnosed with a respiratory passage problem Aaron Ioel would be diagnosed 19Delayed onset muscles soreness DOMS extreme muscle soreness shows up a day after a workout and may last for several days Is the result of structural damage to myofibrils 20 Compared to the day before he did this workout from Q19 athlete is likely to be less strong oneday posttraining In a few days he will be stronger due to muscle rebuild with protective proteins 2 1 Ventricles in the axon terminals of a motor neuron contain Acetylcholine which is a released into the synaptic cleft 22 The difference between a large and small motor unit is the number of fibers innervated by the neuron 23 A depolarizing stimulus results in changes in cell membrane ion permeability If the cell membrane potential increase to 50mV voltage gated channels open and sodium will rush into the cell 24 Chronic hypertrophy is a result of muscle fiber hypertrophy and increased number of myofibrils 25 Given that V02156Lmin VC02115Lmin and VE322Lmin calculate the ventilator equivalent for oxygen What does this value represent 206Lmin means 206 L of air must be inhaled in order to extract a liter of oxygen 26 The P02 in muscle tissue is lower than the P02 in the blood passing the muscle coming from lungs The FCC in muscle is higher than the PC02 in the blood passing the muscle 27 During low intensity exercise which of these variables is primarily responsible for increased pulmonary ventilation Tidal Volume 28 34 A neurotransmitter binds to a receptor on the sarcolemma stimulating an action potential The AP then travels down the TTubules to the Sarcoplasmic Reticulum which releases Calcium into the sarcoplasm Calcium binds to troponin which pulls Tropomyosin off the binding sites on actin Myosin heads connect to open binding sites on actin and immediately pivot towards the MLine making the sarcomere shorter Q will bind to the myosin head allowing it to release from actin 35 FALSE Muscle spindle fibers are activated in response to overstretching of the tendon 36 FALSE immobilization has greater effect on the function of Type II fibers than Type I 37 TRUE In order for air to move into the body atmospheric pressure must exceed pressure in the lungs by 23mmHg 38 TRUE the sodiumpotassium pump exchanges 3 sodium ions for 2 potassium ions in order to maintain a negative resting membrane potential 39 FALSE use of anabolic steroids has been shown to increase V02max and strength 40 FALSE a sensory impulse from a simple motor re ex terminates at higher levels in the brain 41 TRUE McArdle s disease patients have no lactate threshold but do have ventilator threshold 42 FALSE Partial pressure of PC02 is higher in arteries than the veins at rest 43 FALSE Except in individuals which chronic lung conditions ventilation is the limiting factor in exercise performance
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