TISSUES NOTES PART 1. NOTES - TISSUES The human body is organized in the following manner: ATOMS...
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Transcript of TISSUES NOTES PART 1. NOTES - TISSUES The human body is organized in the following manner: ATOMS...
TISSUES NOTES
PART 1
NOTES - TISSUES
• The human body is organized in the following manner:
ATOMS
MOLECULES
CELLS
TISSUES
ORGANS
ORGAN SYSTEMS
ORGANISM (human)
• TISSUE (definition)
• similar cells with the same function
• 4 types of human tissue: I. EPITHELIAL
TISSUEII. CONNECTIVE TISSUEIII. NERVOUS TISSUEIV. MUSCLE TISSUE
I. EPITHELIAL TISSUE• Function: • cover or lining of organs
1. Stratified Squamous Epithelium
• Function: • protection from injury• cells on the bottom are round – they become flat near the top
• Location: • skin
• 3 main types of Epithelial Tissue:
2. Simple Columnar Epithelium
• long rectangles packed close together
Function: • to secrete chemicals & absorb nutrients
Location: • lining of digestive tract (stomach, intestines)
lining of the stomach (columnar epithelium)
3. Ciliated Epithelium (aka: psuedostratified)
• similar to columnar epithelium, but with CILIA
Function: • movement of mucus or egg by action of cilia
Location: • trachea, oviducts (fallopian tubes)
* there are other types of epithelium as well
Tracheal epithelium (ciliated)