The Integumentary System, Part 2 - Skin Deeper: Crash Course Anatomy & Physiology #7

What is the most vital purpose of the integumentary system?

• Acting as a protective barrier

• Storing blood for emergencies

• Producing vitamin D

• Excreting waste products

Which structures in the skin are responsible for sensing touch and pressure?

• Sweat glands

• Oil glands

• Cutaneous sensory receptors

• Hair follicles

Approximately what percentage of your total blood volume is held in your skin at any given time?

• 1%

• 5%

• 10%

• 20%

What is the medical term for blue skin, which can indicate heart failure or poor circulation?

• Jaundice

• Erythema

• Cyanosis

• Melanoma

What part of the body converts a molecule into vitamin D when exposed to UV light?

• Liver

• Kidneys

• Skin cells

• Bones

What are the two main regions of a hair strand?

• Cuticle and Cortex

• Medulla and Follicle

• Shaft and Root

• Epidermis and Dermis

Which type of sweat glands are responsible for producing the watery sweat found on your palms, forehead, and foot soles?

• Apocrine glands

• Sebaceous glands

• Ceruminous glands

• Eccrine glands

What is the primary function of sebum, the oily substance secreted by sebaceous glands?

• To cause pimples

• To produce body odor

• To soften and lubricate skin and hair

• To regulate body temperature