Epithelium and CT Function

Simple Squamos Epithelium

-Single layer
of flat cells
-Allows for rapid exchange
FOUND- lungs, amnion around embryo

Simple Squamos Epithelium

FOUND- lungs, amnion around embryo

Simple Cubodial Epithelium

-Single layer of boxy cells
- Allows for absorption, secretion
FOUND- Kidney tubules

Simple Cubodial Epithelium

FOUND- Kidney tubules

Nonciliated Simple Columnar Epithelium

-Single layer of tall, narrow cells (no cilia)
- Allows absorption and secretion (mucin)
FOUND- lining of the intestine
- Contains GOBLET CELL that secretes mucous

Nonciliated Simple Columnar Epithelium

FOUND- lining of the intestine

Ciliated Simple Columnar Epithelium

-Single layer of tall, narrow, ciliated cells
- Allow for secretion, movement of material across free surface
FOUND- Uterine tube

Ciliated Simple Columnar Epithelium

FOUND- Uterine tube

Pseudostratified Ciliated Columnar Epithelium

- Single layer of narrow cells with varying heights (some ciliated)
- protection; ciliated form secretes mucin, moves mucus
FOUND- respiratory tract lining

Pseudostratified Ciliated Columnar Epithelium

FOUND- respiratory tract lining

Keratinized Stratified Squamos Epithelium

- Multiple layers of cells
- Apical cells are dead, flat
- Function- protection
FOUND- epidermis of skin

Keratinized Stratified Squamos Epithelium

FOUND- epidermis of skin

Nonkeratinized Stratified Squamos Epithelium

- Multiple layers of cells
-Flat, apical cells are alive and moist
- Function- protection
FOUND- lining of vagina, lining of oral cavity.

Nonkeratinized Stratified Squamos Epithelium

FOUND- lining of vagina, lining of oral cavity.

Stratified Cubodial Epithelium

- Multiple layers of cells, apical cells are boxy.
- Protection and Secretion
FOUND- lining of sweat gland duct

Stratified Cubodial Epithelium

FOUND- lining of sweat gland duct

Stratified Columnar Epithelium

- Multiple layers of cells, apical cells are elongated
- protection and secretion
FOUND- part of male urethra

Stratified Columnar Epithelium

FOUND- part of male urethra

Transitional Epithelium

- Multiple layers, apical cell shape varies depending on degree of stretch
- Can distend or recoil depending on how stretched it is
FOUND- lining of urinary tract

Transitional Epithelium

FOUND- lining of urinary tract

Simple Epithelium

Squamos, Cubodial, Columnar, Pseudostratified Columnar

Stratified Epithelium

Squamos: Keratinized/Nonkeratinized, Cubodial, Columnar, Transitional

Goblet Cells

Lumen

Cilia

Basal Layer

Areolar connective tissue

Type: loose

Location: under epithelial membrane, surrounding blood vessels

Function: connect muscle fibers & surround blood and lymph vessels

Adipose connective tissue

Type: loose

Location: Under dermis, around the heart and kidneys

Function: energy storage & insulation

Reticular connective tissue

Type: loose

Location: Spleen, Lymph nodes, liver

Function: provides space for lymphocytes

Dense regular connective tissue

Type: Dense

Location: Tendons & ligaments

Function: resist tension in one direction

Dense Irregular connective tissue

Type: Dense

Location: Epidermis & joint capsules

Function: resist tension in multiple directions

Elastic connective tissue

Type: Dense

Location: Vocal cords & vertebral ligaments

Function: resist tension & allow elastic recoil