You have damaged your knee playing soccer, specifically the cartilage structure between the bones called the meniscus, and no tissue other than the cartilage has been damaged. Your doctor tells you that it will be many months before you might be able to return to soccer after surgery. What is the best explanation for this?
A) Bone has to re-grow in the area, and that takes a while.
B) Nerves to the knee have been damaged.
C) There is slow healing because of a normal lack of blood supply to cartilage.
D) Excessive inflammation inactivates the knee mobility for many months.
E) Blood vessels have been destroyed, so the cartilage is not receiving enough nutrients.
Answer: C
C) There is slow healing because of a normal lack of blood supply to cartilage.
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A. Filariasis B. Leukemia C. Hodgkin disease D. Mononucleosis E. Edema
Which type of chemical messenger will act locally on nearby cells?
A. Paracrine B. Endocrine C. Autocrine D. Neurotransmitter
About how many cells constitute the body of an adult?
A) 50 to 100 quadrillion B) 50 to 100 million C) 50 to 100 billion D) 50 to 100 trillion
The physical process of bone formation is called ________.
A) disintegration B) osteogenesis C) embryogenesis D) fertilization E) articulation