Question

question 1 many changes occur in tissue structure as a result of aging. which of the following changes are true? select all that apply ☐ bone strength decreases. ☐ cardiac muscle cells and neurons are lost and not replaced. ☐ connective tissue production increases, causing wrinkles. ☐ epithelial tissues get thinner.

Explanation:

1. Bone strength decreases: With aging, bone density and strength typically decline due to reduced bone formation and increased resorption.
2. Cardiac muscle cells and neurons are lost and not replaced: Cardiac muscle cells (myocytes) and neurons have limited or no regenerative capacity, so their loss with aging is not fully replaced.
3. Connective tissue production increases, causing wrinkles: Actually, with aging, the production of connective tissue components like collagen and elastin decreases, leading to loss of skin elasticity and wrinkles. So this statement is false.
4. Epithelial tissues get thinner: Epithelial tissues, like the skin's epidermis, can thin with age due to reduced cell turnover and changes in tissue structure.

Answer:

• A. Bone strength decreases.
• B. Cardiac muscle cells and neurons are lost and not replaced.
• D. Epithelial tissues get thinner.