Flashcards: Epithelium

Here are flashcards that cover all the information on epithelium tissue:

Flashcard 1

Front: What are the functions of epithelial tissue?
Back:

  1. Permeability (controls entry/exit of substances).

  2. Support and protection (forms barriers).

  3. Sensation (contains sensory nerve endings).

  4. Secretion (produces substances like sweat, hormones).

Flashcard 2

Front: How is epithelium tissue named?
Back:

  1. By the number of layers:

    • Simple: Single layer of cells.

    • Stratified: Multiple layers of cells.

  2. By cell shape:

    • Squamous: Flat and thin.

    • Cuboidal: Cube-shaped.

    • Columnar: Tall and rectangular.

Flashcard 3

Front: What is the structural organization of epithelial tissue?
Back:

  • Cells are tightly packed with minimal extracellular material.

  • Attached to a basement membrane.

  • Avascular (no blood vessels), relies on diffusion for nutrients.

Flashcard 4

Front: Where is simple squamous epithelium found, and what is its function?
Back:

  • Function: Rapid diffusion/filtration.

  • Location:

    • Lungs (alveoli).

    • Blood vessels (endothelium).

    • Kidneys (glomeruli).

Flashcard 5

Front: Where is simple cuboidal epithelium found, and what is its function?
Back:

  • Function: Secretion and absorption.

  • Location:

    • Kidney tubules.

    • Glands.

    • Ovary surfaces.

Flashcard 6

Front: Where is simple columnar epithelium found, and what is its function?
Back:

  • Function: Absorption and secretion (may have microvilli or cilia).

  • Location:

    • Digestive tract (stomach, intestines).

    • Uterine tubes.

Flashcard 7

Front: Where is stratified squamous epithelium found, and what is its function?
Back:

  • Function: Protection against abrasion and pathogens.

  • Location:

    • Skin (keratinized).

    • Mouth, esophagus, vagina (non-keratinized).

Flashcard 8

Front: Where is stratified cuboidal epithelium found, and what is its function?
Back:

  • Function: Protection and secretion.

  • Location: Sweat gland ducts, salivary glands.

Flashcard 9

Front: Where is stratified columnar epithelium found, and what is its function?
Back:

  • Function: Protection and secretion.

  • Location: Male urethra, large ducts of some glands.

Flashcard 10

Front: Where is transitional epithelium found, and what is its function?
Back:

  • Function: Stretching (cells change shape between cuboidal and squamous).

  • Location: Urinary bladder, ureters, urethra.

Flashcard 11

Front: Where is pseudostratified (ciliated columnar) epithelium found, and what is its function?
Back:

  • Function: Secretion and movement of mucus (cilia sweep particles).

  • Location: Trachea, bronchi, nasal cavity.

Flashcard 12

Front: What are the key differences between simple and stratified epithelium?
Back:

  • Simple: Single layer, designed for absorption, secretion, or filtration.

  • Stratified: Multiple layers, designed for protection.

Flashcard 13

Front: What are the characteristics of squamous cells?
Back:

  • Flat and thin.

  • Specialized for diffusion and filtration.

Flashcard 14

Front: What are the characteristics of cuboidal cells?
Back:

  • Cube-shaped (width = height).

  • Specialized for secretion and absorption.

Flashcard 15

Front: What are the characteristics of columnar cells?
Back:

  • Tall and rectangular (height > width).

  • Specialized for absorption and secretion.

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