Which of the following is not a purpose of the excess postexercise oxygen consumption (EPOC) in muscle?

A) To serve elevated metabolic rate
B) To restore resting levels of ATP and CP
C) To replenish the phosphagen system
D) To oxidize lactic acid
E) To neutralize carbon dioxide buildup


E

Anatomy & Physiology

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Based on the facts about chemical equilibria in animal systems, indicate for each summary reaction below if it is reversible or irreversible (don't worry about balancing the reactions). Explain the lack of reversibility. In what kind of system would the reaction(s) you selected as irreversible be reversible? Explain.

A. C6H12O6 ?CO2 + H2O B. ADP + Pi ?ATP C. H2O + CO2 ?H2CO3

Anatomy & Physiology

Which ultrastructure feature is characteristic of pancreatic acinar cells?

a. Abundant apical microvilli b. Apically located secretion vesicles c. Basally located mitochondria enclosed by infoldings of the plasma membrane d. Mitochondria with tubular cristae e. Numerous lipid droplets

Anatomy & Physiology

Which is a TRUE statement about smooth muscle?

A. Smooth muscle does not use troponin-tropomyosin to regulate cross-bridge activity. B. Smooth muscle does not have thick and thin filaments. C. Smooth muscle is striated. D. The myosin in smooth muscle requires phosphorylation before it can bind to ATP. E. Changes in cytosolic calcium do not regulate cross-bridge activity in smooth muscle.

Anatomy & Physiology

For air to flow into or out of the lungs, there must be

A. a volume gradient established between the atmosphere and the alveoli. B. a temperature gradient between the atmosphere and the alveoli. C. a diffusion gradient between the atmosphere and the alveoli. D. a pressure gradient established between the atmosphere and the alveoli. E. None of the choices are correct.

Anatomy & Physiology