All of the following characteristics of the sarcoplasmic reticulum in cardiac muscle cells are true except
A. it is involved in the storage and release of Ca2+.
B. it is more irregular than that in skeletal muscle fibers.
C. it is in close association with the transverse tubules.
D. it has enlarged terminal cisternae like skeletal muscle fibers.
Answer: D
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A pediatrician tapped the knee of a child. She found that the child's patellar tendon reflex was abnormal. Which body areas might have problems?
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A __________ is a bird that has left the nest and is feeding on its own
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