Anabolic resistance in aging muscle refers to:

Rate of force development is more predictive of falls than maximal strength because:

Mechanical loading overcomes anabolic resistance because it:

Satellite cell contribution to hypertrophy in aging muscle is best described as:

A.     B.   Using the lecture, match the correct response to each question. 

Why does collateral reinnervation worsen force precision despite preserving muscle tissue?

Preferential loss of fast-twitch fibers with aging primarily impairs which function?

Grip strength and gait speed are powerful screening tools because they:

A 6-year-old is rescued from a house fire with heavy smoke exposure from burning furniture and plastics. She is tachypneic, confused, and hypotensive despite an adequate airway and supplemental oxygen with a normal SpO2 reading. A venous blood gas shows a markedly elevated lactate and, unexpectedly, a venous oxygen saturation that is much higher than typically seen in shock. What does this combination of findings suggest, and what is the underlying mechanism?

A 10-year-old with ARDS is on volume control A/C (RR 20, VT 6 mL/kg, PEEP 10, FiO2 0.55). ABG: pH 7.32, PaCO2 54, PaO2 72. SpO2 is 94%. Which parameter adjustment most directly targets the elevated PaCO2?