Combined HPHY 371- Final test questions and answers 2024

RER vs RQ and 1 - RER can be greater than 1 RQ cannot be greater than 1 Factors concering maximal Oxygen Uptake VO2 max - Central factors: oxygen delivery -pulmonary diffusion, blood volume, cardiac output Peripheral factors (oxygen uptake/use) -capillary density, mitochondrial mass VO2 max...

Direct calorimetry - process of measuring a person's metabolic rate via the measurement of heat production -direct measurement of metabolic rate Indirect calorimetry - direct relationship between O2 consumed and amount of heat produced -O2 consumption, CO2 production, N2 balance Oxygen de...

Of the factors that can influence stroke volume, which do you think contributes to the rise in stroke volume during exercise? Increased afterload Increased contractility Increased heart rate All of the above - increased Contractility Based on the Krogh hydraulic model, which of the followin...

3 cardiovascular adjustments - 1. ANS adjustments which increase Q 2. Redistribution of Q 3. Increased venous return in proportion to increased Q Q - cardiac output = (EDV - ESV) x HR - increases with increased exercise intensity Fick equation - VO2, Q, and aterial-venous O2 difference O...

Homeostasis - dynamic equilibrium maintained by an organism and the environment in order to maintain biologically critical variables remaining constant Regulated Variable - targets of homeostasis Controlled Variables - variables change to minimize displacement of regulated variables stresso...

Work - product of force and the distance through which the force acts W=Force x Distance Measured in Neutonmeters or Joules Power - how much work is accomplished per unit of time P= W/T Measured in Watts Ergometry - Measurement of the work output Example: Bench step in which the participa...

Which of the following is a clear example of internal work? A. Lifting a barbell 2 meters B. Breaking down phosphocreatine to creatine, which is an exergonic reaction and releases energy C. Using energy to transport calcium into the sarcoplasmic reticulum against a chemical gradient D. All...