Bio Lab Practical 1 Flashcards
Epithelial tissue/epithelium
Forms boundaries between different environments, protects, secretes, absorbs, filters
Where is epithelium tissue found
Letting the digestive track organs and other hollow organs also on the skin surface
What is simple epithelial tissue
Single cell layer
What is stratified epithelium tissue
Composed of two or more cell layers stacked on top of each other
Where is simple epithelial tissue found
Where absorption, secretion, infiltration occur and Thin epithelial barrier is desirable
Where is stratified epithelial found
Are common in high abrasion areas where protection is important, such as the skin surface in the lining of the mouth
What are squamous cells
Flatten and scale like
What are cuboidal cells
Box like approximately as tall as they are wide
What are columnar cells
Tall and column shaped
What are simple squamous epithelium
Single layer of flattened cells with the disc shaped center nuclei and sparse cytoplasm
Are the simplest of the epithelial
Simple squamous epithelium
What is the function of the simple squamous epithelium
Allows materials to pass by diffusion infiltration insights were protection is not important.
What does the simple Squam us epithelium secrete
Lubricating substances in serosae
Where are simple Squam us epithelium found
Kidney, air sacs of lungs, lining of heart, blood vessels, lymphatic vessels and lining of ventral body cavity
What does simple squamous epithelium tissue look like under a microscope
Stringing and thin, May form air sacs
What is the simple cuboidal epithelium
Layer of cute like cells with large vehicle central nuclei
What is the function of simple cuboidal epithelium
To secrete and absorb
Where are simple cuboidal epithelium found
Kidney tubules, ducks and secretory portions of small glands and ovary surface
What do you simple cuboidal epithelium cells look like
Round, clustered, somewhat like fat/oil
in water
what are simple columnar epithelium
Single layer of tall cells with round to oval nuclei. Some cells have microvilli and cilia, layer may contain mucus secreting unicellular glands
What are mucus secreting unicellular glands
Goblet cells
What do you goblet cells contain
Mucus
What is the function of simple columnar epithelium
Absorb, secretion of mucus, enzymes, and other substances. The ciliated type propels mucus or reproductive cells.
Where are nonciliated simple columnar epithelium located
Non-ciliated types line most of the digestive trac, gallbladder and excretory ducts of some glands.
Where are ciliated simple Columnar epithelium located
Ciliated tape line the small bronchi, uterine tubes, and some regions of the uterus
What our pseudostratified Columnar epithelium
They are a single layer of cells with differing Heights, some not reaching the free service. Nuclei are seen at different levels and may contain mucus secreting cells and bear cells.
What is the function of pseudostratified columnar epithelium
Secrete substances, particularly mucus
Where are non-ciliated pseudostratified Columnar epithelium located.
The nonciliated type in males are found in sperm caring ducts and ducts of large glands
Where are the ciliated pseudostratified Columnar epithelium cells found
The ciliated type lines the trachea and most of the upper respiratory tract
What are stratified squamous epithelium tissue
They have a thick membrane composed of several cell layers, basal cells are cuboidal or Columnar in metabolically active surface cells are flattened (squamous)
What is the function of stratified squamous epithelium
To protect underlying tissues in area subject to abrasion
Where is non-keratinized type of stratified squamous epithelium found
Forms the moist lining of the esophagus, mouth, and vagina
Where is the keratinized stratified squamous epithelium found
Forms the epidermis of the skin and dry membrane
What is transitional epithelium
Resembles the stratified squall mess in stratified cuboidal may have basal cells cuboidal or columnar. he differentiator is that the surface cells don’t shape or squamous like depending on the degree of Organ stretch
What is the function of transitional epithelium
Stretches easily, permits stored urine to distend urinary organs
Where is transitional epithelium found
Lines the ureters, bladder and part of the urethra
What is connective tissue
Supports
Muscle tissue
Produces movement
Nervous tissue you
Controls
Connective tissue proper is made up of
Loose CT areolar Loose CT adipose Loose CT reticular Dense CT regular Dense CT irregular Dense CT elastic
CT proper: loose connective tissue, areolar is made up of
A gel like matrix. With three fiber types cells, fibroblasts, macrophages, mast cells and some white blood cells
CT proper: loose connective tissue, areolar function
wraps and cushions organs, macrophages help with inflammation
