today - histology 1 handout today quiz #1 available today at 3pm until monday at 11pm
Post on 21-Dec-2015
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TRANSCRIPT
• Quiz #1 available Friday 3pm until Monday at 11pm
• 10 minutes, 5 questions• 1 question = 1 point• you can only take it once• don’t open it until you are ready to take it!• be sure to hit submit when you are finished• submit before time runs out• open book but not a group effort!
Cells + matrix = tissues
1. Epithelial tissue2. Connective tissue3. Muscle tissue4. Nervous tissue
Epithelial tissue
Connective tissue
1. esophagus
2. stomach
3. Small intestine
4. Large intestine
5. rectum
Simple or stratified
• Squamous• Cuboidal• Columnar• Pseudocolumnar• Glands?
1. Esophagus: food passageway
2. Stomach: mechanical & chemical breakdown of food
3. Small Intestine: absorption & secretion
4. Large intestine: some absorption
5. Rectum: passageway for waste
Connective Tissue
General Functions:
1. Binds organs2. Support3. Protection4. Immune protection5. Movement6. Storage7. Heat8. Others…..
Three types• Fibrous• Supportive• Fluid
Cells + fibers + ground substance = connective tissue
Cells = fibroblasts
Fibers = elastin & collagen
Cells = fibroblasts
Fibers = collagen & elastin
Change composition = change function
Reticular fibers
Supportive connective tissue = cartilage & bone
Cells: chondrocytes
Fibers: collagen & elastin
GS: GAG’s
Perichondrium: dense, irregular CT with chondroblasts
Cells: osteocytes
Fibers: collagen
Matrix: GAG’s & minerals
Bone
Central canal = blood vessel
Surrounded by periosteum
Nervous tissue
Muscle tissue
• neurons & glia• electrical & chemical signals
• muscle fibers• contract when stimulated• skeletal, smooth & cardiac
Glands = cell or organ that secretes something
Exocrine glands
Endocrine glands
• secrete stuff to surface• body surface or organ• sweat, tear, mammary, goblet cell
• secrete stuff into blood• stuff = hormones