What type of tissue primarily composes the dermis?

The dermis is primarily composed of connective tissue, which provides strength, elasticity, and structural support to the skin. This layer of skin is rich in collagen and elastin fibers, which are critical for maintaining the skin's integrity and resilience against various stresses. Connective tissue in the dermis also contains blood vessels, lymphatic vessels, nerve endings, and various cell types, including fibroblasts and mast cells, all of which contribute to the overall function and health of the skin.

In contrast, muscle tissue is responsible for movement and is not a primary component of the dermis. Epithelial tissue primarily makes up the outer layer of skin, known as the epidermis, serving as a protective barrier. Nervous tissue can be found in association with sensory structures within the skin but is not a predominant feature of the dermis itself. Therefore, the prominence of connective tissue in the dermis distinguishes it from the other tissue types listed.