EXERCISE NO. 8 INTEGUMENTARY SYSTEM ADEL

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This deck includes 17 flashcards covering hair follicle, function, skin, and related concepts. Use it to review key Biology ideas, focus on weak cards, and prepare for your exam with StudyLess.

1. 01

   What are the three main layers of the skin?

   Epidermis, Dermis, and Hypodermis.

2. 02

   Describe the epidermis.

   The outermost layer, composed of keratinized stratified squamous epithelium, providing a waterproof barrier.

3. 03

   Describe the dermis.

   The middle layer, a connective tissue layer containing collagen and elastic fibers, and the vascular supply.

4. 04

   Describe the hypodermis.

   The deepest layer, also called subcutaneous tissue, composed of loose connective tissue and adipose tissue, used for insulation, energy storage, and shock absorption.

5. 05

   What is the primary difference between thick and thin skin?

   Thick skin is found on the palms of the hands and soles of the feet and is much thicker than thin skin, which covers the rest of the body.

6. 06

   What are the five distinct cell layers of the epidermis in thick skin?

   Stratum Corneum, Stratum Lucidum, Stratum Granulosum, Stratum Spinosum, and Stratum Basale.

7. 07

   What are the main structures associated with a hair follicle?

   Hair bulb/matrix, hair shaft, sebaceous gland, arrector pili muscle, and dermal vessels.

8. 08

   What is the function of sebaceous glands?

   To produce sebum to lubricate hair and skin.

9. 09

   What is the function of the arrector pili muscle?

   A bundle of muscle fibers that pull hair in response to cold or fear.

10. 10

    What is the function of sweat glands?

    Coiled epithelial structures that regulate body temperature.

11. 11

    What is the purpose of identifying mitotic figures in the stratum germinativum?

    To observe cell division (mitosis) occurring in the basal layer of the epidermis, which is responsible for producing new skin cells.

12. 12

    What are the cell junctions in the stratum spinosum?

    Desmosomes, which keep skin cells stuck together.

13. 13

    Where are melanocytes located?

    In the stratum basale (bottom layer) of the epidermis.

14. 14

    Which cells in the hair follicle are directly responsible for hair growth?

    Matrix cells in the hair bulb.

15. 15

    What is the role of blood vessels in the dermis?

    They provide nutrients and aid in thermoregulation.

16. 16

    What is the function of free nerve endings in the skin?

    Peripheral nerve fibers that transmit signals for pain, heat, and cold.

17. 17

    What is the function of Meissner's corpuscles?

    Specialized structures for detecting light touch and deep pressure/vibration.