Structure and Functions of the Skin., Exercises of Human Physiology

Download Structure and Functions of the Skin. and more Exercises Human Physiology in PDF only on Docsity! Derm Eccrine sweat SubcutanApocrine sweat Worksheet: Structure and Functions of the Skin. Direction: State the structure and functions of the skin. 1. List the 5 functions of the integumentary system: A. Regulation body temperature B. Protection as physical barrier C. Excretion and Absorption D. Cutaneous sensation E. Synthesis of Vitamin D 2. The dermis is superficial to the epidermis. Circle the correct answer | True or False Match the skin structure to its tissue type: There can be more than one answer. Also, choices may be used once, more than once, or not at all: 3. Epidermis: D A. Simple Squamous Epithelial 4. Dermis: F, I B. Simple Cuboidal Epithelial 5. Subcutaneous: F, G C. Simple Columnar Epithelial D. Stratified Squamous Epithelial E. Stratified Cuboidal Epithelial F. Areolar Connective Tissue G. Adipose Connective Tissue H. Dense Regular Connective Tissue I. Dense Irregular Connect Tissue 6. Label the following view of the skin: Arrector pili Outer region Inner region 7. What are the functions of the subcutaneous layer, and is it considered a layer of the skin?  Storage for fat, supplies the dermis with blood, sensitive pressure, attached to the underlying tissues and organs. NO it is not considered as a layer of the skin. Free nerve ending Epidermis 8. The epidermis is composed mostly of which type of cells?  Keratinized, stratified squamous Match the description to the type of epidermal cell: 9. Keratinocytes: C A. Detect touch/sensory sensations. 10. Melanocytes: D B. Produce immune response against pathogens entering skin. 11. Langerhans cells: B C. 4 – 5 layers, produces keratin, waterproofs skin. 12. Merkel cells: A D. Produce the pigment melanin. Objective: Explain the basis of difference in skin color. Match the following pigments found in skin to their description. There are multiple answers per pigment and all choices are to be used. 13. Melanin: A, D, E A. Brown, Black, Yellow Pigment 14. Carotene: C, F B. Pink to Red Pigment 15. Hemoglobin: B, G, H C. Yellow to Orange pigment D. Overall skin shade is dependent upon the amount of this pigment produced. E. Gives some protection against UV F. Found subcutaneous layer and adipose tissue G. The color is due to the pigment inside red blood cells. H. Shade depends on amount of blood flow and oxygen. Objective: Describe the structure and functions of the accessory organs of the skin: 16. List three specific functions of hair: Keeps heat in, protects scalp from injuries and keeps foreign particles out of eyes (eyelashes). 17. Where will you NOT find hair? Palms and Bottom of feet 18. What are hair root plexuses? Nerve endings For questions 19 – 23, decide if the descriptions deserve a ‘T’ for True or ‘F’ for False. IF THE STATEMENT IS FALSE CORRECT THE DESCRIPTION TO MAKE IT TRUE. 19. Hair is mainly composed of cerumen: F, Hair is mainly composed of Keratin. 20. Hair color is due to melanin: T 21. Sebaceous glands are associated with hair: T 22. Contraction of the arrector pili muscles make hair stand erect: T 23. When you are cutting your hair you are cutting the follicle: F, when you are cutting your hair you are cutting the shaft. 24. Label the following view of skin’s accessory structures: