Which of the following is not an epidermal derivative? a. hair, b. sweat gland, c. sensory receptor, d. sebaceous gland.

Verified step by step guidance

1. Understand that epidermal derivatives are structures that originate from the epidermis during development.
2. Recall that common epidermal derivatives include hair, sweat glands, and sebaceous glands.
3. Consider the function and origin of each option: hair, sweat gland, sensory receptor, and sebaceous gland.
4. Recognize that sensory receptors are primarily associated with the nervous system and are not derived from the epidermis.
5. Conclude that the option which is not an epidermal derivative is the one that does not originate from the epidermis.

Key Concepts

Epidermal Derivatives

Epidermal derivatives are structures that originate from the epidermis, the outermost layer of the skin. These include hair follicles, sweat glands, and sebaceous glands, which all play vital roles in thermoregulation, protection, and sensation. Understanding these derivatives is crucial for identifying their functions and distinguishing them from other skin components.

Hair

Hair is a filamentous structure that grows from hair follicles in the skin. It serves various functions, including protection, insulation, and sensory perception. Hair is a classic example of an epidermal derivative, as it develops from the epidermal layer and is involved in thermoregulation and sensory functions.

Sensory Receptors

Sensory receptors are specialized structures that detect environmental stimuli and convert them into neural signals. Unlike hair, sweat glands, and sebaceous glands, which are derived from the epidermis, sensory receptors can be found in various tissues, including the dermis and deeper layers of the skin. This distinction is essential for answering the question regarding which option is not an epidermal derivative.