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The walls of ventricles are much thicke...

The walls of ventricles are much thicker than atria. Explain. 

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### Step-by-Step Solution: 1. **Understanding the Structure of the Heart**: The heart is divided into four chambers: two atria (upper chambers) and two ventricles (lower chambers). Each chamber has a specific function related to blood circulation. 2. **Function of the Atria**: The atria serve as collecting chambers for blood returning to the heart. They receive blood from the body (right atrium) or lungs (left atrium) and have a relatively low-pressure system since they only need to push blood into the ventricles below them. 3. **Function of the Ventricles**: The ventricles, particularly the left ventricle, are responsible for pumping blood out of the heart to the rest of the body. This requires generating a significant amount of pressure to ensure that blood reaches all body parts effectively. ...
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mark the true and false statements a. SAN generates as action potential which stimulates atrial systole. b. ECG is an electrical representation of the graphical activity of the heart during a cardiac cycle. c. The cardiac output of a normal man will be much lesser than an athlete. d. The wall of right ventricle is much thicker than the left ventricle e. In pisces the two separate circulatory pathways are present, hence they have double circulation. f. The clsoed circulatory pattern is considered to be more advantageous than open circulatory pattern. g. Glucose is absorbed by simple diffusion through lymph in lacteales present in the intestinal villi. h. The SAN can generate the maximum number of action potential i.e. 140-150 mi n^(-1) in neonates, and is responsible for initiation and maintenance of the rhythmic contractile activity of the heart. i. Angina can occur in any age but more common among the neonates and infants. j. heart failure is sometimes called congestive heart failure because congestion of the blood vessels is one of the main symptoms of this disease.

Give biological reason for the following: The wall of the ventricle is thicker than the auricles,

Knowledge Check

  • The left ventricle possesses a thicker wall than right ventricle because

    A
    it receives deoxygenated blood from left atrium
    B
    it receives oxygenated blood from left atrium
    C
    it pumps deoxygenated blood out of the heart
    D
    it pumps oxygenated blood out of the heart.

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