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Questions and Answers
What are the tiny vessels that veins originate from?
What are the tiny vessels that veins originate from?
- Arterioles
- Venules (correct)
- Aorta
- Capillaries
What happens to venules as they near the heart?
What happens to venules as they near the heart?
- They get progressively larger (correct)
- They get smaller
- They remain the same size
- They change direction
What is the source of blood for venules?
What is the source of blood for venules?
- Other venules
- Arteries
- Capillaries (correct)
- The heart
What is the opposite process of venules receiving blood from capillaries?
What is the opposite process of venules receiving blood from capillaries?
What kind of vessels do venules eventually become after increasing in size?
What kind of vessels do venules eventually become after increasing in size?
What type of cell does it mature?
What type of cell does it mature?
What does it help to fight off?
What does it help to fight off?
What is the function of the matured cell?
What is the function of the matured cell?
What type of response does it trigger?
What type of response does it trigger?
What is the result of its maturation?
What is the result of its maturation?
What is the primary function of the body's first line of defense?
What is the primary function of the body's first line of defense?
What is the main characteristic of bone marrow?
What is the main characteristic of bone marrow?
Where is bone marrow typically found in the body?
Where is bone marrow typically found in the body?
What is the function of bone marrow in the body?
What is the function of bone marrow in the body?
What type of bones typically contain bone marrow?
What type of bones typically contain bone marrow?
What percentage of blood is in your veins?
What percentage of blood is in your veins?
Where is the majority of your blood located?
Where is the majority of your blood located?
What is the percentage of blood that is not in your veins?
What is the percentage of blood that is not in your veins?
In what part of the circulatory system is most of your blood?
In what part of the circulatory system is most of your blood?
What is true about the majority of your blood?
What is true about the majority of your blood?
What do proteins, minerals, fats, and nutrients belong to?
What do proteins, minerals, fats, and nutrients belong to?
What is the main function of the immune system in relation to foreign invaders?
What is the main function of the immune system in relation to foreign invaders?
What is unique about cancer cells?
What is unique about cancer cells?
What is the term for substances that are not naturally part of the body?
What is the term for substances that are not naturally part of the body?
What do damaged cells, cancer cells, and foreign invaders have in common?
What do damaged cells, cancer cells, and foreign invaders have in common?
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Study Notes
Blood Vessels and Immunity
- Venules are tiny vessels that receive blood from capillaries and gradually increase in size as they approach the heart.
- Venules mature a specific type of white blood cell that fights off foreign organisms, serving as the body's first line of defense against foreign invaders.
Bone Marrow and Blood Composition
- Bone marrow is the soft, spongy tissue found in the center of certain bones, such as the hip bone and breastbone.
- Approximately 75% of the body's blood is contained within veins.
- Blood composition includes proteins, minerals, fats, nutrients, damaged cells, cancer cells, and foreign invaders like bacteria and viruses.
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