Questions and Answers
What is the term for the gland that produces oil in the skin?
Sebaceous gland
What muscle is responsible for causing hair to stand up?
Arrector pili muscle
What surrounds and supports the hair follicle?
Connective tissue sheath
What is the name of the part of the hair that is located below the surface of the skin?
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What structure at the base of the hair follicle contains blood vessels and nerves?
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What is the part of the hair that is embedded in the skin?
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What is the visible part of the hair called?
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What type of sweat gland produces a thick, potentially odorous fluid?
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What type of sweat gland produces a watery fluid?
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What is the area in which hair cells divide and produce new hair?
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Study Notes
Hair Follicle Components
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Sebaceous Gland: Produces oily sebum that lubricates hair and skin, preventing dryness and providing a protective barrier against bacteria.
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Arrector Pili Muscle: Small smooth muscle attached to hair follicles; when contracted, it causes hair to stand upright (goosebumps) and generates heat.
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Connective Tissue Sheath: Surrounds the hair follicle, providing structural support and nourishment to the follicle and hair growth.
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Hair Bulb: The enlarged base of the hair follicle, where hair growth begins. Contains actively dividing cells and melanocytes, responsible for hair pigmentation.
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Hair Papilla: Located at the base of the hair bulb; contains blood vessels and connective tissue that supply nutrients to the growing hair follicle.
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Hair Root: The portion of hair below the skin surface; anchors the hair in the follicle and is the site of growth.
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Hair Shaft: The visible part of hair above the skin; composed of keratinized cells and acts as a protective structure.
Sweat Glands
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Apocrine Sweat Gland: Produces a thicker, potentially odorous fluid, primarily located in areas like the armpits, groin, and nipples, contributing to body odor.
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Merocrine Sweat Gland: Produces a watery fluid primarily for thermoregulation and cooling the body; distributed widely across the skin surface.
Additional Structures
- Matrix: The actively dividing cells found in the hair bulb; critical for hair growth and regeneration. It influences hair texture and thickness.
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Description
Test your understanding of the hair follicle structure with this labeling quiz. Each card presents a specific term associated with hair follicles, requiring you to identify and define critical components. Perfect for students studying human biology or anatomy.
