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The Integumentary System Lab Report

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The Integumentary System Lab Report
Ashley Black The Integumentary System

Exercise 1: Structures of the Skin

Fill in the names of the numbered structures in the diagram in the table below the picture.

1 Hair Shaft|7 Hypodermis|
2 Arrector pilli muscle|8 Dermis|
3 Sebaceous(oil) gland|9 Epidermis|
4 Hair follicle|10 Subpapillary vascular plexus|
5 Eccrine sweat gland|11 Dermal papillae|
6 Hair follicle receptor(root hair plexus)|12 Pore|

QUESTIONS:

A. How does the skin tan when exposed to ultraviolet light? When exposed to the sun’s UV rays, your skin’s melanocytes produce melanin, the dark pigment that creates a tan. A tan is your skin’s attempt to prevent UV rays from doing any further damage to the sensitive skin cells in your epidermis.
…show more content…
Be sure to label all of the structures in the epidermis and dermis you were able to find:

QUESTIONS:

A. Compare your slide to the photomicrograph example in the lab procedure. How are they the same and how are they different? Propose a reason why you would see several differences between different slides of skin. They are similar in you can obviously pick out the dermis and you can obviously see the 4 different stratum in both pics. They are different in the photomicrograph example it’s hard to find the melanocyte and the nerve endings.

B. What is keratin? Keratin is an extremely strong protein which is a major component in skin, hair, nails, and hooves.

C. Why is skin keratinized? To protect the epidermis.

Exercise 3: Clinical Conditions of the Skin

QUESTIONS:

A. What are the three types of skin cancer? Basal cell carcinoma, Squamous cell carcinoma, Melanoma

B. Which type of skin cancer is easily treatable? Basal cell carcinoma

C. Explain why melanoma is so dangerous. Because it’s highly metastatic and resistant to

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