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Questions and Answers
What is the main function of the circulatory system?
What is the main function of the circulatory system?
- Transport of various substances (correct)
- Protection from pathogens
- Storage of nutrients
- Regulation of body temperature
Which of the following is NOT a component of the blood circulatory system?
Which of the following is NOT a component of the blood circulatory system?
- Lungs
- Capillaries
- Kidneys (correct)
- Heart
Which of the following is NOT transported by the circulatory system?
Which of the following is NOT transported by the circulatory system?
- Hormones
- Carbon dioxide
- Bile (correct)
- Oxygen
What is present in humans and higher animals as an independent system for blood circulation?
What is present in humans and higher animals as an independent system for blood circulation?
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What is the weight of the human heart?
What is the weight of the human heart?
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What type of muscles make up the human heart?
What type of muscles make up the human heart?
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How many chambers does the human heart consist of?
How many chambers does the human heart consist of?
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Which membrane protects the heart from friction and mechanical shocks?
Which membrane protects the heart from friction and mechanical shocks?
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Study Notes
Circulatory System
- The main function of the circulatory system is to transport oxygen and nutrients to cells and remove waste products.
Components of the Blood Circulatory System
- The components of the blood circulatory system include the heart, arteries, veins, and blood vessels.
Function of the Circulatory System
- The circulatory system transports oxygen, nutrients, and hormones to cells and removes waste products like carbon dioxide.
Higher Animals' Circulatory System
- In humans and higher animals, the circulatory system is an independent system for blood circulation.
Structure of the Heart
- The human heart weighs approximately 250-300 grams.
- The human heart is composed of cardiac muscles.
- The human heart consists of four chambers: the left and right atria, and the left and right ventricles.
Protection of the Heart
- The pericardium membrane protects the heart from friction and mechanical shocks.
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