Which of the following is an effect of aging on the muscular system?
A) Tolerance for exercise increases.
B) Skeletal muscles become more elastic.
C) Skeletal muscle fibers become smaller in diameter.
D) Muscle fibers contain more myoglobin.
E) Scar tissue formation does not occur.
C) Skeletal muscle fibers become smaller in diameter.
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Individuals with McArdle's disease cannot break down glycogen. How would this affect substrate utilization during exercise?
What will be an ideal response?
Which microorganism enters another cell and hijacks the cell's parts, energy supply, and materials?
A. Virus B. Fungus C. Bacterium D. Protozoan
Extensions of the renal cortex that project into the medulla (and subdivide it) are known as the renal ________.
Fill in the blank(s) with the appropriate word(s).
A growing long bone in a child has only two areas of cartilage at the epiphysis. These two areas are the ________.
A. elastic cartilage and epiphyseal plate B. fibrocartilage and articular cartilage C. primary and secondary ossification centers D. epiphyseal plate and epiphyseal line E. articular cartilage and epiphyseal plate