Question

question 4
the dermis:
a is responsible for most of the skins structural strength
b functions as padding and insulation
c contains no blood vessels
d does not contain connective tissue
e is divided into three distinct layers

Explanation:

• Option A: The dermis has collagen and elastic fibers which provide structural strength.
• Option B: Padding and insulation are functions of the hypodermis (subcutaneous layer), not the dermis.
• Option C: The dermis has blood vessels (e.g., in the papillary and reticular dermis).
• Option D: The dermis contains connective tissue (collagen, elastic fibers, etc.).
• Option E: The skin (epidermis + dermis) is not divided into three distinct layers in the way described; the epidermis has layers like stratum corneum etc., and dermis has papillary and reticular regions but not three distinct layers as a whole for "the dermis" in this context.

Answer:

A. is responsible for most of the skin's structural strength