Epithelial Tissues

Epithelial Tissues
Anatomy and Physiology Honors

Tissue Types in Human Body

Four Types:

1. Epithelial

2. Connective

3. Muscle

4. Nervous

Review!

Cells ->Tissues -> Organs ->Organ Systems -> Organism

Tissue- a group or mass of similar cells working together to perform common functions.

Epithelial Tissue- Characteristics

-Covers all human external and internal body surfaces.
-Main glandular (glands) tissue
-Attached to underlying connective tissue at basement membrane

Epithelial Tissue-Characteristics

• Usually has no vascular tissue (avascular)-no blood supply

• Cells reproduce rapidly, resulting in rapid healing (and scarring)

• Cells packed tightly together
  

Epithelial Tissue

All epithelial tissues have two surfaces: an apical and a basal surface
1. The apical surface is the unattached surface
2. The basal surface is attached to the basement membrane

Dropdown

The ​

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surface is the free surface of epithelium that is not attached to underlying tissue.

Dropdown

The ​

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surface of epithelium is attached to underlying tissue, specifically connective tissue.

Multiple Choice

The ________ membrane forms a zipper between epithelial tissue and the underlying connective tissue.

• plasma
• basement
• cellular
• nuclear

Types of Epithelial Tissues

​Epithelial tissues have two parts to their names

First part describes the arrangement of cells
Simple: a single layer of cells
Stratified: two or more layers of cells
Pseudostratified: appears to be layered due to the various heights of cells (and varying positions of nuclei)

Types of Epithelial Tissues

​Epithelial tissues have two parts to their names

Second part tells you the shape of the individual cells
Squamous: Flattened
Cuboidal: Box shaped
Columnar: Tall and shaped like columns

Multiple Choice

The cells in this photo are best described by which of the following terms?

• simple

• stratified

• pseudostratified

Multiple Choice

The cells in this photo are best described by which of the following terms?

• simple

• stratified

• pseudostratified

Multiple Choice

The cells in this photo are best described by which of the following terms?

• simple

• stratified

• pseudostratified

Multiple Choice

Which of the following terms best describes the shape of the cells in this photo?

• squamous

• cuboidal

• columnar

Multiple Choice

Which of the following terms best describes the shape of the cells in this photo?

• squamous

• cuboidal

• columnar

Multiple Choice

Which of the following terms best describes the shape of the cells in this photo?

• squamous

• cuboidal

• columnar

Dropdown

Label the photo of cells. Remember that the first name denotes the arrangement of cells and the second is describes the shape of the cells.

Select answer

​

Select answer

Functions of Epithelial Tissues

1. Protection

2. Secretion

3. Absorption

4. Excretion

5. Senses

Multiple Choice

Where is epithelial tissue found?

• glands
• covering body surfaces
• lines organs
• all of the above

Multiple Choice

Lines ducts and glands

• Columnar
• Cuboidal
• Simple Squamous
• Transitional

Multiple Choice

Absorbs nutrients in the digestive tract

• Columnar
• Cuboidal
• Simple Squamous
• Pseudostratified

Multiple Choice

Name the tissue

• Pseudostratified

• Simple columnar

• Transitional

• Stratified Squamous

Multiple Choice

Used in places where diffusion needs to occur, such as blood vessels and air sacs in the lungs

• Cuboidal
• Columnar
• Simple Squamous
• Stratified Squamous

Multiple Choice

Used in places needing protection from scrapes and abrasions such as the skin and esophagus

• Cuboidal
• Pseudostratified
• Simple Squamous
• Stratified Squamous

Multiple Choice

Epithelial tissues are richly supplied with blood vessels

• True

• False

Multiple Choice

Which of the following is NOT a main function of epithelial tissues?

• covering exposed surfaces

• lining internal passageways

• producing glandular secretions

• contracting to produce movement

Multiple Choice

Epithelial Tissues may be classified according to?

• Location and Direction

• Color and Shape

• Number of cell layers and cell shape

• It depends

Multiple Choice

Epithelial tissue always has an exposed outer surface and an inner surface anchored to connective tissue by a thin, non- cellular structure called the

• Nonstratified layer

• Stratified layer

• Basement membrane

• Fibroblast

Multiple Choice

Identify:

• Smooth Muscle
• Columnar
• Transitional
• Pseudostratified

Multiple Choice

Identify:

• Areolar
• Smooth Muscle
• Transitional
• Simple Squamous

Multiple Choice

Identify:

• Columnar
• Cuboidal
• Pseudostratified
• Transitional

Labelling

Label the different types of epithelial tissues

Drag labels to their correct position on the image

simple cuboidal

stratified cuboidal

simple columnar

stratified squamous

stratified columnar

pseudostratified

transitional

simple squamous