One difference between cardiac muscle fibers and skeletal muscle fibers is that cardiac muscle ...

One difference between cardiac muscle fibers and skeletal muscle fibers is that cardiac muscle fibers:a.
   have several nuclei, while skeletal muscle fibers do not.
  b. are not striated, while skeletal muscle fibers are.
  c. are under voluntary control, while skeletal muscle fibers are not.
  d. branch and form complex networks, while skeletal muscle fibers do not.
  e. are cylindrical-shaped, while skeletal muscle fibers are spindle-shaped.

Question 2

Which types of cells or cell components play an essential role in the clotting of blood?
  a. erythrocytes
  b. platelets
  c. leukocytes
  d. hemoglobin
  e. plasma