Today - Histology 1 handout today

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Presentation transcript:

Today - Histology 1 handout today Quiz #1 available today at 3pm until Monday at 11pm

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 Epithelial tissue Connective tissue Cells + matrix = tissues 1. Epithelial tissue 2. Connective tissue 3. Muscle tissue 4. Nervous tissue

simple stratified

squamous cuboidal columnar

Goblet cells ciliated Pseudostratified columnar

Stratified squamous Transitional (stratified)

Simple or stratified Squamous Cuboidal Columnar Pseudocolumnar Glands? 1. esophagus 2. stomach 3. Small intestine 4. Large intestine 5. rectum

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 Three types Fibrous Supportive Fluid General Functions: Binds organs Support Protection Immune protection Movement Storage Heat Others…..

Cells + fibers + ground substance = connective tissue Cells = fibroblasts Fibers = elastin & collagen Reticular fibers Cells = fibroblasts Fibers = collagen & elastin Change composition = change function

loose dense regular mesentery Tendons & ligaments irregular Areolar tissue skin

Fibrous connective tissue type and function

Supportive connective tissue = cartilage & bone Cells: chondrocytes Fibers: collagen & elastin GS: GAG’s Perichondrium: dense, irregular CT with chondroblasts

hyaline elastic fibrocartilage chondrocytes collagen & elastin fibers GAG’s

Bone Cells: osteocytes Fibers: collagen Matrix: GAG’s & minerals Central canal = blood vessel Surrounded by periosteum

Nervous tissue neurons & glia electrical & chemical signals Muscle tissue muscle fibers contract when stimulated skeletal, smooth & cardiac

Glands = cell or organ that secretes something Exocrine glands secrete stuff to surface body surface or organ sweat, tear, mammary, goblet cell Endocrine glands secrete stuff into blood stuff = hormones

Membranes line & cover viscera cutaneous mucous serous Mucous membrane

Differentiation Metaplasia

** don’t forget about quiz #1! Available until Monday at 11pm

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