Multiple Choice
Cardiac muscle cells obtain energy almost exclusively through ________.
A) anaerobic pathways
B) aerobic respiration
C) glycolysis
D) the Krebs cycle
E) protein reserves
Correct Answer:

Verified
Correct Answer:
Verified
Q10: Figure 21.1<br> <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB4856/.jpg" alt="Figure 21.1
Q11: Because cardiac muscles are mechanically, chemically, and
Q12: The _ are a series of irregular
Q13: Figure 21.1<br> <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB4856/.jpg" alt="Figure 21.1
Q14: Which vessel delivers venous blood from the
Q16: Figure 21.2<br> <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB4856/.jpg" alt="Figure 21.2
Q17: Figure 21.5<br> <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB4856/.jpg" alt="Figure 21.5
Q18: The rapidly depolarizing cells, called pacemaker cells,
Q19: Figure 21.4<br> <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB4856/.jpg" alt="Figure 21.4
Q20: Figure 21.2<br> <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB4856/.jpg" alt="Figure 21.2