Questions and Answers
What is the term for the outermost layer of skin?
What is the role of melanocytes in the skin?
Melanocytes produce melanin, which gives color to the skin and protects against UV radiation.
Where are Langerhans' cells located?
In the stratum spinosum.
What is the function of the sebaceous gland?
Signup and view all the answers
What is the function of the arrector pili muscle?
Signup and view all the answers
What is the role of blood vessels and nerves in the skin?
Signup and view all the answers
Which layer is the third layer of the epidermis?
Signup and view all the answers
What does the stratum lucidum refer to?
Signup and view all the answers
What is the primary function of eccrine sweat glands?
Signup and view all the answers
What is the structure of a hair follicle?
Signup and view all the answers
What is the significance of the dermis in skin structure?
Signup and view all the answers
What is contained in the hypodermis?
Signup and view all the answers
Study Notes
Skin Structure and Components
- Hair Shaft: The visible part of the hair that extends above the skin surface.
- Epidermis: The outermost layer of skin, providing a barrier and creating skin tone.
- Dermis: The middle layer of skin, containing connective tissues, blood vessels, and other structures.
- Hypodermis: The deepest layer, consisting of fat and connective tissue, acting as insulation and cushioning.
Skin Cells and Glands
- Langerhans' Cells: Immune cells located in the stratum spinosum, playing a role in skin's defense mechanism.
- Sebaceous Gland: Produces oil (sebum) to moisturize skin and hair, preventing dryness.
- Hair Papillae: A small structure at the base of the hair follicle, containing blood vessels and nerves that nourish hair.
- Eccrine Sweat Gland: Gland responsible for regulating body temperature through perspiration, found all over the body.
- Hair Bulb: The rounded part of the hair follicle where hair growth begins.
- Hair Follicle: A small tubular cavity in the skin where the hair develops.
Sensory Receptors and Muscle
- Blood Vessels and Nerves: Provide nourishment to skin and enable sensory perception.
- Apocrine Sweat Gland: Release pheromones and are concentrated in areas such as the armpits and groin.
- Arrector Pili Muscle: A tiny muscle attached to hair follicles, responsible for hair standing on end when cold or frightened.
- Pacinian Corpuscle: A type of pressure receptor located deeper in the skin, sensitive to vibrations and pressure.
- Meissner's Corpuscle: Sensory receptor that detects light touch; found in the dermal papillae.
Skin Layers
- Merkle Cell: Specialized cells in the epidermis that function as touch receptors.
- Basal Layer/Stratum Basale: The deepest layer of the epidermis where new skin cells are produced.
- Melanocytes: Cells responsible for producing melanin, located in the stratum spinosum and contributing to skin pigmentation.
- Stratum Spinosum: The fourth layer of the epidermis, responsible for skin strength and flexibility.
- Stratum Granulosum: The third layer where keratinization begins, leading to the formation of a protective barrier.
- Stratum Lucidum: The second layer, found only in thick skin areas like palms and soles, providing an extra layer of protection.
- Stratum Corneum: The outermost layer, consisting of dead keratinized cells that protect underlying layers from the environment.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Test your knowledge of skin anatomy with these labeling flashcards. Each card features important terms related to skin structure, including layers and associated glands. Ideal for students of biology or those studying human anatomy.
