body tissue epithelium and blood
DESCRIPTION
GTRANSCRIPT
Body tissue
Tissues
• 4 main types• Epithelium• Connective• Nervous• muscle
• Simple squamous• Cuboidal• Columnar• compound
• Simple squamous
• Cuboidal
• Columnar• Some have cilia to move
secretions along• Found in vilii in small intes
tine and trachea and bronchii
Compoundsimple
• For diffusion• Alveoli-capillaries• Lines ducts & tubes so
materials pass through• found in organs with glands• e.g. thyroid
• Often known as mucous membrane –layers of cells with basement membrane
• Lining of mouth, tongue
Compound keratinized Epithelium• simple compound
epithelium • + top layer of flattened
dead cells = • epidermis. • As the old cells rise to the
top they become filled with the protein
• keratin .• Protection from germs
and water• Found in • skin
Connective tissue• Most widely
distributed in body.• includes • fibrous tissues• fat• cartilage• bone• bone marrow• blood.
Connective tissue• As the name implies, connective tissues often:• binds/sticks other organs together• holds organs in place• cushions them• and fills space.
Connective tissues• Blood• Adipose• Areolar• Cartilage• bone
Extracellular material• Material found outside
the cell that is not made up of other cells
• This is known as the matrix.
Connective tissue
• Matrix occupies more space than the cells The cells are quite far apart
• Except in fat as the cells are in close contact and have large non living lipid (fat) droplets.
• The fat droplets have more non living than living tissue
Blood
• Blood is a connective tissue and each different type of blood cell and the matrix has a different function
• 1. What is the name given to the matrix?
Components of blood
plasma 55%White blood cells + platelets 1%
Red blood cells 44%
The average adult has ? Litres of blood?
5-6 litres
platelets
lymphocyte
erythrocyte
http://www.webschoolsolutions.com/patts/systems/bloodcells.jpg
Now visit some of the websites with animations about the blood
• Some of the links on the moodle can be viewed in college.
• Some will only work from home.• Start with this link
http://health.howstuffworks.com/adam-200028.htm
http://www.healthvideos.tv/video/17151-medical-animation-of-red-blood-cells.htmlhttp://www.wisc-online.com/objects/index_tj.asp?objID=AP14704