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- The three characteristics of the heart are12345:
- Four chambers: The heart has four muscular sections (chambers) that briefly hold blood before moving it.
- Muscle tissue: The heart is composed of smooth muscle and myocardium, which enables heart contractions.
- Electrical impulses: Electrical impulses make the heart beat, moving blood through these chambers.
Learn more:✕This summary was generated using AI based on multiple online sources. To view the original source information, use the "Learn more" links.The heart is composed of smooth muscle. It has four chambers which contract in a specific order, allowing the human heart to pump blood from the body to the lungs and back again with high efficiency. The heart also contains “pacemaker” cells which fire nerve impulses at regular intervals, prompting the heart muscle to contract.biologydictionary.net/heart/The heart consists of four chambers, four one-way valves, and a set of arteries and veins that regulate the normal flow of blood within the body. The smooth functioning of the circulatory system is maintained by a complex network of blood vessels that circulate blood throughout the body and back to the heart.www.news-medical.net/health/Structure-and-Functi…The heart is a fist-sized organ that pumps blood throughout your body. It’s your circulatory system ’s main organ. Muscle and tissue make up this powerhouse organ. Your heart contains four muscular sections (chambers) that briefly hold blood before moving it. Electrical impulses make your heart beat, moving blood through these chambers.my.clevelandclinic.org/health/body/21704-heartThe human heart is one of the most important organs responsible for sustaining life. It is a muscular organ with four chambers. The size of the heart is the size of about a clenched fist. The human heart functions throughout a person’s lifespan and is one of the most robust and hardest working muscles in the human body.byjus.com/biology/human-heart/The heart has three layers of tissue:
- Endocardium: The innermost layer, provides a smooth lining for chambers and valves
- Myocardium: The middle layer, composed of muscle tissue that enables heart contractions
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