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
Q: How should a driver maintain the cooling system?
Ans: Check coolant levels regularly
Ans: Check coolant levels regularly
Q: Who has been appointed by Donald Trump as Assistant Attorney General for Civil Rights?
Ans: Harmeet Dhillon
Ans: Harmeet Dhillon
Q: Which Indian minister was featured in Time Magazine’s list of most influential people in AI in 2024?
Ans: Ashwini Vaishnav
Ans: Ashwini Vaishnav
Q: Skin that acts as camouflage or secretes chemicals poisonous to predators are successful modification in frogs and salamanders, classed as what in the order anura?
Ans: amphibians
Ans: amphibians
Q: Who moved frequently in ancient times for food?
Ans: Nomads
Ans: Nomads
Q: What is considered a good source of calcium?
Ans: corn
Ans: corn
Q: A patient with myasthenia gravis develops respiratory failure. Which advanced procedure is indicated?
Ans: Mechanical ventilation
Ans: Mechanical ventilation
Q: What was the Conference Board’s LEI value in April 2025?
Ans: 99.4
Ans: 99.4
Q: What is India's rank in the 'Rule of Law Index 2024' of the World Justice Project released on October 30, 2024?
Ans: 79th
Ans: 79th
Q: Which of the following is a Lakshana of Kaphaja Kustha?
Ans: Kandu
Ans: Kandu
Q: What is the main cause of floods in India?
Ans: Heavy monsoon rains
Ans: Heavy monsoon rains
Q: Who has won the 'Commonwealth Short Story Award' on June 29, 2024?
Ans: Sanjana Thakur
Ans: Sanjana Thakur
Q: On July 13, 2024, in which state was India's longest urban tunnel project 'Thane-Borivali Tunnel' inaugurated?
Ans: Maharashtra
Ans: Maharashtra
Q: What is the predicted year that as many as half of all remaining species could go extinct?
Ans: 2050
Ans: 2050
Q: What is the purpose of the oxygen sensor?
Ans: Monitors exhaust gases
Ans: Monitors exhaust gases
