What kind of muscle is the heart mainly composed of?
- Correct Answer: cardiac muscle
- nerve muscle
- respiratory muscle
- idealized muscle
Explanation: To move blood through the heart, the cardiac muscle needs to contract in an organized way. Blood first enters the atria ( Figure below ). When the atria contract, blood is pushed into the ventricles. After the ventricles fill with blood, they contract, and blood is pushed out of the heart. The heart is mainly composed of cardiac muscle. These muscle cells contract in unison, causing the heart itself to contract and generating enough force to push the blood out.
More Random Questions
Ans: Ashwini Vaishnav
Ans: species
Ans: less concentrated
Ans: Honey
Ans: Inspect for leaks or rust
Ans: avian
Ans: Networking
Ans: Assam
Ans: Cyclone
Ans: Jodhpur
Ans: Avoid overtaking
Ans: President
Ans: catalytic converters
Ans: electromagnetic
Ans: Bland diet
