Lab 1: Epithelial Tissue And Glands Flashcards
What are the 2 types of epithelia?
Lining epithelia & glandular epithelia
What is epithelial tissue?
Closely packed cells resting on a basement membrane
What are the characteristics of epithelium?
- Avascular
- Covers surfaces / lines organs
What are the 2 glandular epithelia?
Exocrine & Endocrine
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Ducts Capillaries
(No ducts)
What are the types of lining epithelia?
Simple & Stratified
________________|________________
squamous cuboidal columnar
Name the epithelium and list its characteristics:
- simple squamous epithelium
- flattened nucleus
- flattened cytoplasm
- function: diffusion
- ex: mesothelium, endothelium, glomerulus
Name the epithelium and list its characteristics:
- simple cuboidal epithelium
- circular, centrally located nucleus
- cube-shaped cytoplasm
- function: synthesis of hormones
- ex: thyroid follicles, primary ovarian follicle, kidney tubules
Name the epithelium and list its characteristics:
- simple columnar epithelium
- nucleus closer to the b.m.
- elongated cytoplasm
- function: digestion, absorption, lubrication
- ex: small intestine, oviduct, gallbladder, colon
Name the epithelium and list its characteristics:
- pseudostratified columnar epithelium
- looks stratified but all cells are resting on the b.m.
- function: airways
- ex: trachea, upper resp. tract, epididymis
Name the epithelium and list its characteristics:
- stratified squamous non-keratinized epithelium
- multi-layered
- named squamous because squamous cells are closest to the lumen
- function: protection
- ex: esophagus
Name the epithelium and list its characteristics:
- stratified cuboidal epithelium
- multi-layered cuboidal cells
- function: secretion
- ex: sweat glands, salivary glands
Name the epithelium and list its characteristics:
- keratinized stratified squamous epithelium
- keratin: dead squamous cells w/out a nucleus
- function: protection
- ex: skin
Name the epithelium and list its characteristics:
- stratified columnar epithelium
- columnar cells are closest to the lumen so its called columnar
- function: secretion
- ex: salivary ducts
Name the epithelium and list its characteristics:
- transitional epithelium (relaxed)
- umbrella-shaped
- bi-nucleated
- function: distention
- ex: urinary bladder, ureter
Name the epithelium and list its characteristics:
- transitional epithelium (distended)
- undergoes transition based on the organ
- function: distention
- ex: urinary bladder, ureter
Identify the type of epithelium, where its located, and list its characteristics:
Type: Simple squamous epithelium (mesothelium)
Location: Mesentry
Characteristics: Flat with dark stained nuclei
Identify the type of epithelium, where its located, and list its characteristics:
Type: Simple squamous epithelium (mesothelium)
Location: Mesentry
Characteristics: Flat with dark stained nuclei
Identify the type of epithelium, where its located, and list its characteristics:
Type: Simple squamous epithelium
Location: Parietal layer of Bowman’s capsule of renal corpuscle found in the renal cortex (glomerulus)
Characteristics: white space is the urinary space
Identify the type of epithelium, where its located, and list its characteristics:
Type: Simple squamous epithelium
Location: Parietal layer of Bowman’s capsule of renal corpuscle found in the renal cortex (glomerulus)
Characteristics: white space is the urinary space
Identify the type of epithelium, where its located, and list its characteristics:
Type: Simple squamous epithelium
Location: Parietal layer of Bowman’s capsule of renal corpuscle found in the renal cortex (glomerulus)
Characteristics: white space is the urinary space
Identify the type of epithelium, where its located, and list its characteristics:
Type: Simple squamous epithelium (endothelium)
Location: Blood vessels
Characteristics: flat cells w/ flat nuclei that line b.v.
Identify the type of epithelium, where its located, and list its characteristics:
Type: Simple squamous epithelium (endothelium)
Location: Blood vessels
Characteristics: flat cells w/ flat nuclei that line b.v.
* if you see a lumen w/ epithelium around it, its for diffusion
Identify the type of epithelium, where its located, and list its characteristics:
Type: Simple squamous epithelium (endothelium)
Location: Blood vessels
Characteristics: flat cells w/ flat nuclei that line b.v.
* if you see a lumen w/ epithelium around it, its for diffusion
Identify the type of epithelium, where its located, and list its characteristics:
Type: Simple cuboidal epithelium
Location: Kidney tubules
Characteristics: Nucleus is usually round and located in the center of the cell
Identify the type of epithelium, where its located, and list its characteristics:
Type: Simple cuboidal epithelium
Location: Kidney tubules
Characteristics: Nucleus is usually round and located in the center of the cell
Identify the type of epithelium, where its located, and list its characteristics:
Type: Simple cuboidal epithelium
Location: Kidney tubules
Characteristics: Nucleus is usually round and located in the center of the cell
Identify the type of epithelium, where its located, and list its characteristics:
Type: Simple cuboidal epithelium
Location: Thyroid follicles (gland)
Characteristics: The follicular cells have an absorptive and secretory functions
* If you see a cavity filled w/ fluid (colloid), then its the thyroid gland
