Why is it possible for me to inject large quantities of a hormone into my body and not have a physiological response?

What best describes the hormonal response during exercise that contributes to the breakdown of fat

If I took a drug that inhibited the increase in left ventricular wall thickness with aerobic exercise training, given that other structural adaptations to the heart are maintained, how would this affect wall tension and what would this change in wall tension mean

What best describes exercise fatigue

A person was performing a maximal lift with electrodes attached directly to the muscle.  The muscle force generated was less than what the person normally could generate. While that person was trying to generate maximal force, I directly stimulated the muscle fibers to contract via the electrode.  This direct stimulation DID NOT result in a further increase in the force generated above what was generated by the person alone.  What might this indicate about the state of fatigue?

What would happen if normal blood perfusion to the kidneys was maintained during exercise

What are some possible reasons why aged muscle might not hypertrophy to the same extent as young muscle in response to resistance exercise training?

I took a drug that inhibited the activity of the Glut1 glucose transporter.  What would happen to my glucose uptake during exercise

I took a drug that increased the stability of the dystrophin glycoprotein complex as I aged. How might this drug affect my muscle hypertrophic (growth) response to resistance exercise and why?

What best describes sarcopenia