CH 2.3 - Surface Epithelial Tissues & Morphological Classes + Glandular Epithelium

Control the delusion and break to mature realityyy

Squamous = ?

Flat

Cuboidal = ?

As tall as it is wide

Columnar = ?

Taller than it is wide

Transitional = ?

Cell changes shape based on organ activity

Simple = ?

One cell layer

Stratified = ?

More than one cell layer

Pseudostratified = ?

Direct contact of basement membrane

Simple Squamous Epithelium exhibits?

Irregular polygonal outline

Simple Squamous Epithelium is present in?

Lung alveoli, and parietal layer of Bowman’s capsule

Simple Squamous Epithelium is known as ____________, which lines the luminal surface of the heart, blood and lymphatic vessels.

Endothelium

Simple Squamous Epithelium is known as ____________, which lines the serous cavities, producing serous fluid.

Mesothelium

Simple Cuboidal Epithelium exhibits?

Squarish outline, round and central nuclei

Simple Cuboidal Epithelium is present in?

Some segments of exocrine gland ducts, kidney’s collecting tubules, thyroid gland follicles, ovary surface

Simple Columnar Epithelium exhibits?

Oval shape; more basal than apical
Consists of single layer of tall cells, nuclei forms single row

Non-ciliated simple columnar epithelium is found in?

Stomach, intestines of large ducts of some exocrine glands

Ciliated simple columnar epithelium is found in?

Uterus, oviducts, and pulmonary bronchi

Stratified Squamous Epithelium exhibits?

Capability to withstand rubbing

The superficial layer of stratified squamous is made up of?

‘Old cells‘, flat or plaque-like cells

The deepest layer of stratified squamous is made up of?

‘New cells‘, tall cuboidal or columnar cells

Stratified Squamous Epithelium is found in?

Epidermis (forms it), digestive tract (oral cavity to esophagus), vagina, part of the urethra, and the superficial surface of conjunctiva and cornea

Keratinized stratified squamous epithelium are topmost layer cells with?

No nuclei

Keratinized stratified squamous epithelium is found where?

Skin

Non-keratinized stratified squamous epithelium are topmost layer cells with?

Nuclei

Non-keratinized stratified squamous epithelium is found where?

Mucous membrane

Stratified Cuboidal Epithelium has 2-3 layers of cuboidal cells, and is found where?

Larger ducts of some salivary glands (major salivary glands)

Stratified Columnar Epithelium has 2 layers of columnar cells (deeper layer is sometimes cuboidal) is found where?

Some exocrine gland ducts

Pseudostratified Columnar Epithelium is also known as?

False stratified epithelium

Pseudostratified Columnar Epithelium has 1 layer of columnar cells with variable nuclei levels, all of which rest on?

Basal lamina

Pseudostratified Columnar Epithelium is found where?

Membranous and spongy part of male urethra

Ciliated Pseudostratified Columnar Epithelium is found where?

Trachea and main bronchi

Transitional Epithelium is designed to?

Withstand stretching

What state would transitional epithelium be in when basal cells are cuboidal; the superficial cells bulge out into the lumen, giving the cells a dome-shaped profile?

Contracted state

What state would transitional epithelium be in when it transforms into a thin stratified squamous epithelium.

Distended state

Transitional Epithelium is found in?

Urinary system organs

What is ductless and delivers secretions (hormones) into blood or lymph?

Endocrine glands

What may or may not have ducts, and delivers secretions onto covering or lining epithelium?

Exocrine glands

What is the exocrine gland classification in which the composition is a single cell?

Unicellular

What is the exocrine gland classification in which there are 3 further classes?

Multicellular

This type of multicellular gland covers epithelium where most cells are secretory.

Secretory Epithelial Sheet

This type of multicellular gland has groups of cells that gather around a small orifice (serves as a duct) and form shallow invagination within the epithelial surface.

Intraepithelial gland

This type of multicellular gland possesses ‘true’ ducts.

Exocrine glands with ducts

Simple gland = ?

Has a single unbranched duct

Compound gland = ?

Duct has branches

Tubular gland = ?

Blind-ending tube

Alveolar (acinous/acinar) gland = ?

Globular/basket-like

Tubulo-alveolar gland = ?

Some are tubular, some are globular

According to the nature of secretion, this exocrine gland produces a viscous secretion that contains mucin.

Mucous

According to the nature of secretion, this exocrine gland produces a thin, watery secretion that often contains enzymes.

Serous

What glands release secretion by exocytosis?

Merocrine glands

What glands release secretion by destroying secretory cells, whose remnants are discharged with the secretions?

Holocrine glands

According to the nature of secretion, this exocrine gland involves the apical part of the secretory cells being released together with the secretory product.

Apocrine glands