Why is oxygen so much more critical to the heart muscle than to skeletal muscles?
What will be an ideal response?
Cardiac muscle cells are highly dependent on oxygen and rely almost exclusively on aerobic respiration. Thus, they cannot incur much oxygen debt. When there is a forced switch to anaerobic respiration, lactic acid and rising H+ levels impair heart function.
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Specific proteins are manufactured through the interaction of ________ and ________
A) multiple enzymes; three types of RNA B) multiple enzymes; two types of RNA C) multiple carbohydrates; three types of DNA D) multiple proteins; three types of DNA E) multiple enzymes; three types of DNA
A consequence of inflammation is increased capillary filtration and edema, which causes swelling and pain
Indicate whether the statement is true or false.
Which of the following is a protein?
a. creatine b. muscle c. insulin d. creatine phosphate
This is a picture of a skin wound. What does "D" represent?
A. blood clot B. subcutaneous fat C. blood vessel D. epidermis E. dermis