Epithelial Tissue Slides

Question 1

What is a specific feature of tissues in the kidneys?

Answer 1

• renal tubes
• capillaries
• connective tissue
• columnar epithelium
• nuclei, basal pole, apical pole
• cuboidal stratified epithelium

Question 2

What are special characteristics of the uterus of a cat?

Answer 2

• tubular glands
• vein
• artery
• 4 layers: serosa, muscle layer, mucosa, lumen
• connective tissue

Simple tubular glands (some simple branched tubular):
- Found in the uterus.
- Tube-like structure of the glands
- Have a secretory unit and a excretory duct where the secretion goes out in lumen.
- Surrounded by ciliated columnar epithelium.

Question 3

What are the characteristics of human skin?

Answer 3

• squamous stratified keratinized epithelium
• hair follicle
• branched sebaceous (acinar) gland
• erectile muscle tissue (of the hair)

Question 4

What are the main characteristics of the epidermis?

Answer 4

• stratified squamous keratinised epithelium.
• 5 layers:
  stratum corneum,
  stratum lucidum,
  stratum granulosum,
  stratum spinosum,
  stratum basale.
• connective tissue
• papillae of connective tissue
• excretory ducts of sebaceous glands
• artefacts

Question 5

What are the main characteristics of the cornea?

Answer 5

• stratified squamous non-keratinised epithelium.
• connective tissue
• 3 layers:
  stratum basale,
  stratum spinosum,
  stratum superficiale.

Question 6

What are the main characteristics of the urothelium?

Answer 6

• TRANSITIONAL EPITHELIUM
• stretched and unstretched

Question 7

Explain the intestinal tract.

Answer 7

• Pseudostratified epithelium
  3 layers: basal, apical (surface) and intercalated.
• connective tissue
• Have cilia at the apical domain which shows that it is in the intestinal tract.
• Cells are attached to the basement membrane and there is no top layer.
• Nucleus is NOT in a straight line.
• Unicellular glands, mostly goblet cells are present since they produce mucous secretion that makes it easier for the food to move.

Question 8

Explain the layer surrounding the internal cavities.

Answer 8

• mesothelium
• cell borders
  cell nuclei

Question 9

What is the function of the finger-like projections of connective tissue in the epidermis? What is their name?

Answer 9

The finger-like projections of connective tissue are called papillae.

They:
- increase the surface area between the epithelium (dermis and epidermis) making it stronger
- increase the amount of exchange of oxygen, nutrition and waste.