Cardiac muscle cells
a. do not contract by a sliding filament mechanism.
b. are similar to those of smooth muscle in being
nonstriated.
c. have fewer mitochondria than skeletal muscle
cells do.
d. possess numerous gap junctions on their sides,
favoring rapid spread of excitation.
e. have intercalated disks with tight junctions at
their branching ends.
Answer: d
You might also like to view...
The origins of which of the following cell types creates the least amount of ethical debate?
A. EG cells B. EC cells C. Hematopoietic stem cells D. ES cells
The proteins of the cell membrane are
a. enzymes. b. channels through the membrane. c. transporters that move substances across the membrane. d. receptors. e. all of these.
Why is it important that NAD+ molecules are regenerated during fermentation?
What will be an ideal response?
The largest molecule of the following is
A. glucose. B. a polysaccharide. C. a disaccharide. D. sucrose. E. a monosaccharide.