Colorado Cosmetology Written Practice Exam 2025 - Free Cosmetology Practice Questions and Study Guide

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Question: 1 / 425

Which gland produces oil that lubricates the skin and hair?

Adrenal gland

Parathyroid gland

Sebaceous gland

The sebaceous gland is the structure responsible for producing oil, known as sebum, that serves to lubricate both the skin and hair. This oil helps to maintain moisture levels, preventing the skin and hair from becoming dry and brittle. Sebum also plays a role in providing a protective barrier against environmental stressors and has antibacterial properties that can help prevent skin infections.

The adrenal glands are involved in producing hormones that regulate metabolism, immune response, and stress, while the parathyroid glands are primarily responsible for regulating calcium levels in the blood. The thyroid gland produces hormones that regulate metabolism and energy levels but does not play a role in oil production for the skin or hair. Understanding the functions of these various glands can help clarify the specific role of the sebaceous gland and its importance in skin health and beauty.

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Thyroid gland

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