Multiple Choice More than one choice may apply. Which structure is not associated with a hair? a. Shaft b. Cortex c. Matrix d. Cuticle e. Lunule

Verified step by step guidance

1. Identify the structures that are typically associated with hair anatomy.
2. Understand that the hair shaft is the visible part of the hair above the skin surface.
3. Recognize that the cortex is the thickest layer of the hair, providing strength and color.
4. Note that the matrix is the growth zone of the hair, located at the base of the hair follicle.
5. Realize that the lunule is part of the nail structure, not associated with hair.

Key Concepts

Hair Structure

Hair is composed of several key structures, including the shaft, cortex, cuticle, and matrix. The shaft is the visible part of the hair, while the cortex provides strength and color. The cuticle is the outer layer that protects the inner structures. Understanding these components is essential for identifying which options are related to hair.

Shaft

The hair shaft is the part of the hair that extends above the skin's surface. It is made up of keratinized cells and is responsible for the hair's length and appearance. Recognizing the shaft's role helps differentiate it from other hair structures that are not visible externally.

Matrix

The hair matrix is a group of rapidly dividing cells located at the base of the hair follicle. It is crucial for hair growth, as it produces new hair cells that push older cells up the shaft. Understanding the matrix's function is important for comprehending hair development and structure.