5 Questions
What prevents backflow of blood through the heart?
Heart valves
How many chambers does the heart of a fish typically have?
Two
Where is the heart located in humans?
Between the lungs, in the middle compartment of the chest
What determines the rhythm of the heart's blood pumping?
Pacemaker cells in the sinoatrial node
What is the size of the human heart, approximately?
The size of a closed fist
Study Notes
Heart Function and Structure
- Valves prevent backflow of blood through the heart.
- A fish's heart typically has two chambers.
Heart Location and Size
- The heart is located in the thoracic cavity, between the lungs, in humans.
- The human heart is approximately the size of a fist.
Heart Rhythm Regulation
- The sinoatrial (SA) node determines the rhythm of the heart's blood pumping.
क्विज़: हृदय के बारे में जानकारी इस क्विज़ में हृदय के बारे में जानकारी और विस्तार से जानकारी प्राप्त क
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