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Questions and Answers
What is the main function of arteries?
What is the main function of arteries?
- Carrying blood away from the heart (correct)
- Pumping blood into the heart chambers
- Receiving blood from the lungs
- Carrying deoxygenated blood to different body parts
Which chamber of the heart pumps deoxygenated blood into the lungs?
Which chamber of the heart pumps deoxygenated blood into the lungs?
- Right atrium
- Left atrium
- Right ventricle (correct)
- Left ventricle
Why do left ventricles have thicker and muscular walls?
Why do left ventricles have thicker and muscular walls?
- To receive oxygenated blood from the lungs
- To carry blood away from the heart
- To prevent back flow of blood
- To pump blood at long distances in the body (correct)
What separates the heart chambers to prevent mixing of oxygenated and deoxygenated blood?
What separates the heart chambers to prevent mixing of oxygenated and deoxygenated blood?
Which artery carries deoxygenated blood?
Which artery carries deoxygenated blood?
Which blood vessel carries blood away from the heart into different body parts?
Which blood vessel carries blood away from the heart into different body parts?
What is the function of capillaries in the circulatory system?
What is the function of capillaries in the circulatory system?
Which blood vessel returns blood back to the heart?
Which blood vessel returns blood back to the heart?
Why is it important for oxygenated and deoxygenated blood not to mix inside the heart?
Why is it important for oxygenated and deoxygenated blood not to mix inside the heart?
What structures are responsible for preventing the back flow of blood in the heart?
What structures are responsible for preventing the back flow of blood in the heart?
At what age does puberty generally begin in boys?
At what age does puberty generally begin in boys?
Which hormone is responsible for the development of secondary sexual characteristics in males during puberty?
Which hormone is responsible for the development of secondary sexual characteristics in males during puberty?
Where are the female gonads located?
Where are the female gonads located?
What does FSH stimulate in females during puberty?
What does FSH stimulate in females during puberty?
Which part of the male body undergoes a growth spurt during puberty?
Which part of the male body undergoes a growth spurt during puberty?
What changes occur in the male reproductive system during puberty?
What changes occur in the male reproductive system during puberty?
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Study Notes
Circulatory System
- Arteries carry oxygenated blood away from the heart to the rest of the body.
- The right ventricle pumps deoxygenated blood into the lungs.
- Left ventricles have thicker and muscular walls because they need to pump blood to the entire body, requiring more pressure.
- A septum separates the heart chambers to prevent mixing of oxygenated and deoxygenated blood.
- The pulmonary artery carries deoxygenated blood to the lungs.
- Arteries carry blood away from the heart into different body parts.
- Capillaries allow for the exchange of oxygen and nutrients with cells.
- Veins return blood back to the heart.
Heart Function
- It is important for oxygenated and deoxygenated blood not to mix inside the heart to maintain proper oxygenation and circulation.
- Valves are responsible for preventing the back flow of blood in the heart.
Puberty
- Puberty generally begins in boys around 10-14 years old.
- Testosterone is responsible for the development of secondary sexual characteristics in males during puberty.
- The female gonads (ovaries) are located in the pelvis.
- FSH (follicle-stimulating hormone) stimulates the development of follicles in the ovaries during puberty.
- The male reproductive system undergoes a growth spurt during puberty, leading to the development of testes, epididymis, vas deferens, and penis.
- During puberty, the male reproductive system matures, allowing for sperm production and fertility.
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