Register
Cyclic contractions of heart muscle are initiated by O a. chemical reactions. O b. the level of oxygen in the blood. O c. electrical impulses. O d. physical exercise.
62.2k views
13 votes
Cyclic contractions of heart muscle are initiated by

O a. chemical reactions.
O b. the level of oxygen in the blood.
O c. electrical impulses.
O d. physical exercise.

User Tobifasc
by
5.5k points

1 Answer

7 votes
B : level of oxygen in the blood
User Benjamin Eckstein
by
5.3k points
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

5.8m questions

7.5m answers

Other Questions

A person who is 15 years old has a target heart rate rang of
How can you improve children’s vocabulary from early toddlerhood through the preschool years?
The perception of the receiver in communication is important
Describe the importance of using protective equipment when participating in sports or physical activity. Protective equipment is designed to prevent the common injuries that can occur for each sport. While
Stanley resor's work contributed to obsession with the human body and bodily functions as diseases were invented to sell products. one of those invented diseases was
Link Copied!