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Vet Science C5

Veterinary Science Chapter 5 Part 1

QuestionAnswer
Pros of unicellular
What are the 4 types of tissue in the body -Epithelial tissue -Connective tissue -Nervous tissue -Muscle tissue
What is the basic function of epithelial tissue Covers & lines
What is the basic function of connective tissue Provides support & Structure
What is the basic function of muscle tissue Enable movement
What is the basic function of nervous tissue Controls & communication
In more detail, what are some functions of epithelial tissue -Absorption -Sensory input -Secretion -Excretion -Filters biochemical substances -Diffusion
Where might you find epithelial tissue Lining of the: bladder, mouth, blood vessels, skin, & mucous membranes
What is histology The study of microscope structures of tissues
What is gross anatomy The study of anatomic structures that can be seen with the naked eye
What is a "secretion" Manufacture & release of biochemical substances in the body
What is an "excretion" Substances that leave the body
List some general characteristics of the epithelial: -Have junctional complexes -Avascular -Inverted to provide sensory input -In the stomach, intestines, & cervix lack nerves
Apical Faces the lumen or body cavity
Basal Faces the underlying connective tissue
Are epithelial tissues generally vascular at some point NO
Are many epithelial tissues inverted YES, MANY
What are the 3 junctional complexes that hold epithelial cells together -Tight junction -Desomes -Gap junction
Highlight of tight junction Keeps things from leaking
Highlight of desomes Tissues that undergo repeated episodes of tension & stretch
Highlight of Gap junction Passage of ions & nutrients from one cell to another
Examples of tight junction -Urinary bladder -Digestive tract
Examples of desomes -Heart -Uterus -Skin
Examples of gap junction -Intestinal epithelial cells -The heart -Smooth muscle
What is the basal lamina A network of the fibers
What does the basal lamina do Anchors the epithelial cell to the underlying connective tissue
Is the basal lamina vascular ? NO avascular
What is the significance of the boundary formed by a basal lamina in cancer and similar invasive disease Don't respect boundaries
How might cilia help a cell -Sweep things by the cell
What is one place in the body that benefits from ciliated cells Respiratory tract
What does striated mean More than 1
What does lumen mean Top
When we are describing epithelia, what are 3 criteria we use to come up with the name -Number of the cell layers -Shape of the cells -Presence of surface specialization
What is the simple epithelium Has only 1 layer
What is stratified epithelium Has more than 1 layer
What shape is a squamous epithelial cell Looks like a hexagon
What shape is a cuboidal epithelial cell Cube-like
What shape is simple columnar Tall & slender cell
How do you decide what to call the epithelia if there are many different layers, and you see different shapes within different layers Stratified squamous
What's up with parvovirus -Seen a lot -Contagious -Life threatening
What cells does parvo attack epithelial cells
How do we attempt to treat it -Monitor -Reverse dehydration -Antibotics -Keep by itself -Inravenous sugar solution -Antiemetic medication -Excellent nursing care
What are cell classifications based on (3) -# of cell layers -Shape of cells -What are the specialized in
Where do you tend to find simple epithelium -Lungs -Kidneys
Where do you tend to find stratified epithelium Found in ares where mechanical & chemical vesssels & passageways
Where might you find simple cuboidal Found in sheltered regions of the body where secretion & absorption take place
Where might you find simple squamous In protected regions of the body such as the lining of the chest & abdominal cavities
Where might you find stratified squamous Found in luminal surface
What are goblet cells Manufracture & store mucous
Where do goblet cells hang out Conjungitivs Respiratory Digestive
Where are goblet cells found in the body Armpits Pancreas
What is the difference between endocrine & exocrine glands Endocrine - use ducts to screte Exocrine - are ductless secretions that are distributed throughout the body and produce & secrete homophones into the bloodstream
What is pseudostratified epithelium Appears stratified but are not
What is transitional epithelium remarkable ability to stretch
What is the difference between serous secretions & mucous secretions Serous secretions are watery & high concentrations Mucous secretions are thick, vicous & composed of glycoproteins
What is a myoepithelial cell Secretions out by contracting
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