During the fatiguing protocol, how did the EMG amplitude change as force production diminished?EMG amplitude stayed consistentEMG amplitude increasedEMG amplitude decreasedEMG amplitude varied throughout the protocol
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During the fatiguing protocol, how did the EMG amplitude change as force production diminished?
EMG amplitude stayed consistent
EMG amplitude increased
EMG amplitude decreased
EMG amplitude varied throughout the protocol
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- An IVPB is infusing at 0.6 mcg/min. The solution concentration is 50 mcg in 100 ml NS. What is the pump setting in mL/hour? Order: Dopamine to run 3.7 mcg/kg/min. Pharmacy sends Dopamine 500 mg in 250 ml of D5W. Patient weighed 168 lbs. How many mL/hour will the patient receive?Drugs NOT LIKELY to Improve Patient's Condition Drugs LIKELY to Improve Patient's Condition A drug that hyperpolarizes the pacemaker potential A drug that reduces current through T-type Ca?+ channels A drug that reduces current through voltage-gated Nat channels A drug that increases the current through F-type "Funny" channelsDo the P-waves of different subjects have the same amplitude? The QRS complexes? TheT-waves? Why?
- Start by defining RER and explain how and why the resting value is established (think back to bioenergetics). Next, explain how and WHY (again, this requires an understanding of bioenergetics) RER changes as exercise intensity is increased (think VT and RCP). Hints: consider the points where the production of a gas increases drastically and why this occurs. Furthermore, consider that VT is often used to approximate AT. Also keep in mind the endogenous buffering systems.Caffeine lowers the heart rate by increasing rates of depolarization at the SA node True False Nicotine raises the heart rate because it stimulates the activity of the sympathetic neurons in medulla oblongata True False The Frank-Starling Law of the Heart states that the force of heart contraction is directly proportional to the initial length of the muscle fiber, within optimal limits of length True False If the sarcomeres stretched beyond the optimal length, the force of contraction would go down, but that can potentially happen only during open heart surgery when the heart is not constrained by the pericardium, lungs, ribs and diaphragm. True False It is the Na+ channel-driven spontaneous depolarization that is affected by sympathetic and parasympathetic inputs to speed up or slow down the firing rate of the SA node and other conductive cells. True FalseA patient with severe hypotension has dopamine ordered at 5 mcg/kg/min. The patient weighs 67 kg. The concentration of dopamine is 3 g in 500 mL of normal saline. How many mL per hour should the IV pump be programmed for? Round to the nearest tenth and list only the number.
- 4 A 15 year old child requires 420mg lithium liquid for treatment of psychosis. Lithium liquid is available in a strength of 520mg/5mL. What volume do you need to measure to administer the correct dose? Please give your answer as a whole numberOther than heart rate what are two other variables that increase with exercise and why do they increase? Possibly variables include systolic BP, Diastolic BP, MAP, R-T interval, etc.Briefly describe the cardiovascular response to an increasing intensity exercise test. Be sure to mention the physiological basis for WHY these responses occur. Do this by discussing the changes in HR, SV, SBP, and DBP.