The heart is a muscular organ located in your chest, slightly to the left. Its main job is to pump blood throughout your body, keeping you alive and healthy.
What Does the Heart Do?
It sends oxygen to your body.
It brings food (nutrients) to your cells.
It takes away waste, like carbon dioxide.
It works all the time — even when you sleep!
How Does the Heart Work?
The heart has four parts inside (called chambers).
Blood goes to the lungs to get oxygen.
Then the heart sends it to the rest of your body.
Facts
Your heart beats about 100,000 times every day.
It’s about the size of your fist.
It beats faster when you run, play, or get excited.
My Note
i learned that heart keeps us alive by pumping blood
and it sends oxygen to our body
add more points and include video dear.
What triggers a heartbeat, and how is it regulated?
How does exercise affect the heart in both the short and long term?
Why is blood pressure important, and what do the numbers actually mean?
How does the heart respond to stress or fear?
How does oxygen-poor blood become oxygen-rich again?
What is the difference between pulmonary and systemic circulation?
Why is the heart considered the central organ of the circulatory system?
What role do coronary arteries play, and what happens if they're blocked?