Lab 13 - Skin
pdf
keyboard_arrow_up
School
Western University *
*We aren’t endorsed by this school
Course
3309
Subject
Anatomy
Date
Jan 9, 2024
Type
Pages
2
Uploaded by ProfessorFog1333
Name: Student #: Lab Assignment 13: Skin (Integument)
, Histology Guide, Chapter 11
1.
Using Slide
MH 090 Thin Skin, Slide
MH 086b Scalp , Slide
MH 086c Scalp or Slide
MH 087b Scalp
draw
and label
seven structures that are specific to the hair follicle. (4 marks)
2.
When the stratum spinosum is viewed under a light microscope, intercellular bridges can be seen.
a.
What is the electron microscope structure of these intercellular bridges? (0.5 mark)
Desmosomes
b.
What preparation artefact in H&E sections makes these intercellular bridges more visible? (0.5
mark)
Spiny processes from cells being pulled apart
3.
Compare and contrast types of secretion and complete the following chart. (3 marks)
Type of Secretion Example of an exocrine gland Briefly describe the method of
secretion
(i.e.: how the secretory cell releases its product)
Holocrine Sebaceous Gland Secrete into hair follicle through rupture of cell’s plasma membrane Apocrine Mammary Gland Oxytocin stimulates myoepithelial cells to contract, excreting milk that is secreted by alveolar units into lobule lumen toward the nipple Merocrine Eccrine Gland Contracts to squeeze fluid out of acinus lumen Notes:
Please adhere to the guidelines explained in Histology 101
, which can be found under the Laboratory tab on our OWL site. Marks may be deducted if you do not read and follow these instructions.
4. Which layer of the epidermis is only found in thick skin? (0.5 mark) Stratum Lucidum 5. With respect to layers of the epidermis, in which layer can you find the nuclei of melanocytes? (0.5 mark) Stratum Basale a. The cytoplasmic processes of melanocytes can be found extending into which epidermal layer? (0.5 mark) Stratum Spinosum b. What is the function of melanocytes? (0.5 mark) Melanin production 6. Using Slide
MH 091 Thick Skin , Slide
MH 091bhr Thick Skin , or Slide
MHS 235 Thick Skin
, draw
and label
nine
structures that are specific to the tissue. (5 marks)
Your preview ends here
Eager to read complete document? Join bartleby learn and gain access to the full version
- Access to all documents
- Unlimited textbook solutions
- 24/7 expert homework help