Tissue and Aging

31. What type of tissue has limited regenerative capacity, often resulting in scar formation or permanent damage?
    A) Epithelial tissue
    B) Nervous tissue
    C) Connective tissue
    D) Smooth muscle

Answer: B) Nervous tissue

32. Which protein is primarily responsible for providing strength and structure to repairing tissue?
    A) Actin
    B) Elastin
    C) Collagen
    D) Keratin

Answer: C) Collagen

33. Which of the following is NOT a characteristic of inflammation?
    A) Redness
    B) Swelling
    C) Decreased blood flow
    D) Pain

Answer: C) Decreased blood flow

34. Why does cartilage heal more slowly than epithelial tissue?
    A) It has a low metabolic rate
    B) It lacks blood vessels
    C) It contains excessive collagen
    D) It undergoes rapid cell division

Answer: B) It lacks blood vessels

35. Which of the following is a long-term consequence of aging on tissue function?
    A) Increased mitotic activity in muscle cells
    B) Enhanced wound healing
    C) Accumulation of cellular damage and fibrosis
    D) Strengthened connective tissues

Answer: C) Accumulation of cellular damage and fibrosis

36. What happens when fibroblasts secrete excess collagen during tissue repair?
    A) Normal tissue regeneration
    B) Increased elasticity of the tissue
    C) Scar tissue formation
    D) Rapid immune response

Answer: C) Scar tissue formation

37. Which phase of tissue repair is characterized by fibroblast activity and new extracellular matrix deposition?
    A) Inflammation
    B) Proliferation
    C) Remodeling
    D) Hemostasis

Answer: B) Proliferation

38. How does reduced stem cell activity in aging individuals affect tissue repair?
    A) It enhances immune responses
    B) It slows down cell replacement and regeneration
    C) It increases collagen production
    D) It strengthens connective tissues

Answer: B) It slows down cell replacement and regeneration

39. Which age-related condition results from the deterioration of synovial membranes in joints?
    A) Osteoarthritis
    B) Osteoporosis
    C) Rheumatoid arthritis
    D) Fibrosis

Answer: A) Osteoarthritis

40. Which of the following best explains why older adults experience slower wound healing?
    A) Increased angiogenesis
    B) Enhanced stem cell activity
    C) Reduced immune function and cell regeneration
    D) Excessive collagen production

Answer: C) Reduced immune function and cell regeneration