The membrane of a contractile cardiac muscle cell contains
A. no calcium pumps.
B. calcium pumps that move calcium out of the cell.
C. calcium pumps that move calcium into the cell.
D. calcium pumps that open and allow calcium to diffuse down its concentration gradient to reach equilibrium.
B
You might also like to view...
During the development of the respiratory system, the vasculature, muscle, and cartilage of each lung form from
A. endoderm. B. mesoderm. C. ectoderm.
Which of the following conditions is most likely to occur in someone who is immobile?
A) ?Embolism
B) ?Thrombosis
C) ?Hematoma
A needle would pierce the epidermal layers of the forearm in which order?
A) basale, spinosum, granulosum, corneum B) basale, spinosum, granulosum, lucidum, corneum C) granulosum, basale, spinosum, corneum D) corneum, granulosum, spinosum, basale
Large areas of opposing plasmalemma may be interconnected by transmembrane proteins called ________ or CAMs.
Fill in the blank(s) with the appropriate word(s).