Tissues

What are the four main types or categories of tissues?

1) Epithelial Tissue

2) Connective Tissue

3) Muscular Tissue

4) Nervous Tissue

Epithelium

A primary tissue that covers the body surfaces and lines body cavities

Its cells are arranged in sheets Forms glands Named according to:

1) the number of layers 2) the shape of the cells at the free surface

Where is simple squamous epithelium located?

1)Alveoli of the lungs

2)Serous membranes

3)Lining the lumina of blood vessels where it is also termed “endothelium”

Specific name of this tissue?Simple Cuboidal Epithelium

What are two special features?Spherical and centrally-located nuclei

What are its three main functions?

1)Secretion

2)Absorption

3)Protection

Where is this tissue located?

1)Small ducts

2)Small glands

3)Small tubules (kidney tubules)

4)Thyroid gland

What kind of epithelial tissue is this? Simple Columnar Epithelium

What are two special features? Columnar

shaped cells

Round or oval cells near basal membrane

What are its three main functions?1)Secretion

2)Digestion

3)Absorption of nutrients

1) Transportation of substances

Where is this tissue located?

1)Stomach2)Small Intestine3) Cecum4)Large Intestine5)Rectum (colon)6)Appendix7)Collecting ducts

of kidneys

What kind of tissue is this?Ciliated pseudostratified columnar epithelium

What are three special features?

Cilia

Goblet cells

Nuclei at different levels

What are its three main functions?

1)Secretion of mucus

2)Propulsion, moving things

3)Protection

Where is this tissue located?

1)Mucosa of trachea

2)Vas deferens

3)Fallopian tubes

4)Epidydimus

Specific name of this tissue?Stratified squamous epithelium

What are two special features?

Multilayered

Central nuclei

What is the main function of this tissue?

Protection

Where is this tissue located?

1)Skin

2)Scalp

3)Lining of mouth

4)Esophagus

5)Ear Canal

6)Anal canal

7)Vagina

What kind of epithelial tissue is this? Stratified cuboidal epithelium

What is its special feature?Generally two layers

of cube-like cells

What are its two main functions?

1)Protection

2)Secretion

Where is this tissue located?

In the largest ducts of:• Sweat glands

• Mammary glands

• Salivary glands

What kind of epithelial tissue is this? Transitional epithelium

What is its main special feature?Teardrop-shaped cells nearest the lumen are larger

than the cells at the stratum germinativum

What is its main function?

Stretching

Where is this tissue located?

1)Urinary bladder

2)Renal pelvis

3)Ureters