Histology Lecture Notes

Flashcards about Histology Lecture Notes

What is Histology?

The study of tissues

What are the four main types of tissue?

Epithelial, Connective, Muscle, and Nervous

What are the functions of Epithelial tissue?

Protection, Absorption, Filtration, Secretion

What is the top surface of epithelial tissue called?

Free (apical) surface

What is the bottom surface of epithelial tissue called?

Basal surface

What is the membrane underneath the basal surface called?

Basement membrane

How are epithelial tissues classified?

Classified by the number of layers and the shape of the cells

How many layers of cells are in simple epithelial tissue?

One layer of cells

How many layers of cells are in stratified epithelial tissue?

More than one layer of cells

What is the function of simple squamous epithelium?

Rapid diffusion of materials

Where can simple squamous epithelium be found?

Blood vessels & lung tissues

What is the function of simple cuboidal epithelium?

Secretion & absorption of substances

Where can simple cuboidal epithelium be found?

Tissues of the kidney

What is the function of simple columnar epithelium?

Secretion of mucus and absorption of substances

Where can simple columnar epithelium be found?

Lining of the digestive tract

What is the function of stratified squamous epithelium?

Protection for the underlying layers

Where can stratified squamous epithelium be found?

Epidermal layer of the skin

Where can stratified cuboidal epithelium be found?

Salivary & mammary glands

Where can stratified columnar epithelium be found?

Larynx and the male urethra

What is the function of pseudo-stratified epithelium?

Secretion & Absorption

Where can pseudo-stratified epithelium be found?

Most of the upper respiratory tract

Where can transitional epithelium be found?

Lining of the urinary bladder

What is the function of a gland?

Secrete a fluid substance

How are glands classified?

Complexity & How substances are secreted

Give examples of exocrine glands.

Sweat glands, mammary glands, and sebaceous (oil) glands in skin