Lab 4

The Integumentary System

Lab 4

The Integumentary System

During the lab period (do #1 first, the rest can be done in any order):

  1. Perform the experiment described in Activity 5 on p. 99 of the Lab Manual.
    • This experiment will have you develop and test a hypothesis about the relative distribution of sweat glands on the palm and the forearm.
    • Answer the questions on the Lab 4 Report.
      • This can be turned in once you’re finished; there’s no need to bring this home as homework.
  2. Become familiar with the skin models and try to identify the following:
    • stratum corneum
    • stratum lucidum
    • stratum granulosum
    • stratum spinosum
    • stratum basale
    • dermal papillae
    • papillary layer
    • reticular layer
    • hypodermis
    • sebaceous gland
    • eccrine sweat gland
    • hair shaft
    • hair follicle
    • hair root
    • epidermis
    • dermis
  3. For your Histology Notebook:
    • Serous membrane – Brief Atlas: Plate 44 (p. 18)
      • Recommended # of pages: 1
      • Draw at 400x total magnification.
      • Label the following: free edge, epithelial cell
      • Answer the following questions:
        • Question 4: What type of epithelium comprises this membrane?
        • Question 5: In general, where in the body do you find serous membranes?
    • Mucous membrane – Brief Atlas: Plate 45 (p. 19)
      • Recommended # of pages: 1
      • Draw at 400x total magnification.
      • Label the following: free edge, epithelial cell, goblet cell
      • Answer the following questions:
        • Question 6: What type(s) of epithelium comprise(s) this membrane?
        • Question 7: In general, where in the body do you find mucous membranes?
    • Thick skin (usu. palm or sole of primate) – Brief Atlas: Plate 37 (p. 15); Histology Atlas: Figs. 12.4 & 12.5 (p. 119).
      • Recommended # of pages: 1-2
      • Draw at 100x total magnification.
      • Label the following: stratum corneum, stratum granulosum, stratum spinosum, stratum basale, dermal papillae, sweat gland, hypodermis, epidermis in general, dermis in general
      • Answer the following questions:
        • Question 8: Identify the major tissue types of the epidermis, dermis and hypodermis.
        • Question 9: List the places on the body where you find thick skin.
    • Thin skin (usu. scalp or axillary skin with hair) – Histology Atlas: Fig. 12.8 (p. 120), Fig. 12.11 (p. 121).
      • Recommended # of pages: 1-2
      • Draw at 100x total magnification.
      • Label the following: stratum corneum, stratum granulosum, stratum spinosum, stratum basale, dermal papillae, hypodermis, sebaceous gland, hair follicle, hair root, epidermis in general, dermis in general
      • Answer Question 10: What is the secretory product of the sebaceous gland?

By the next lab:

  1. Continue with Part 3 of the System Assignment for tissues.
  2. Continue the process of learning the terms that deal with regional anatomy (“Naked Man” – Marieb Figure 1.7; p. 14).
    • Pick 11 more terms on the anterior view and 7 more on the posterior view, and learn those.
  3. Look over the Lab Exam 1 Review Sheet to see what you’re responsible for regarding the bones.
    • Next week’s lab will be dedicated to the axial skeleton.
    • You should look over the names of the bones before coming into lab.