Chp. 4 Tissue Level of Organization Flashcards
Tissue is…
collection of cells that function together
Tissues can be 1. ____ 2. ____ 3. ____
solid, semisolid, liquid
consistency of tissues depends on kinds of ____ present, how they are ____, the _____ between them, kind of _____ and _____ found between cells in extracellular matrix
cells, arranged, connections, fibres, extracellular material
Histology
study of tissues
Pathologist
laboratory study of cells and tissues
Pathologists aid physicians in making ____, and analyze ____, and perform ____
diagnosis, biopsies, autopsies
What are 4 different types of tissues?
- Epithelial Tissues
- Connective Tissue
- Muscle Tissue
- Nervous Tissue
Epithelial Tissue covers ____, lines hollow ____ and forms _____
body surface, organs, glands
Covering and lining epithelium does what?
lines and covers body cavities and ducts
Glandular Epithelium does what?
forms glands
Connect tissue ____ and ___ body and organs
protects, supports
Some connective tissue ____ organs together, some ____ energy, some ____ materials and provide _____, and some ____ body
bind, store, transport, immunity, support
Muscle Tissue generates ____ force and makes body ____
physical, move
What are 3 things Muscle Tissue do?
- maintain posture
- move substances
- produce heat
Nervous Tissue ___ changes ____ and ____ body
detects, inside, outside
What are 5 general features of Epithelial tissue?
- Cellularity
- Polarity
- Attachment
- Avascualrity
- Regeneration
- Cellularity: refers to epithelia cells arranged in ____, either ___ or ____ layers
sheets, single, multiple
- Polarity: is ____ sides with ____ properties
two, contrasting
Epithelial cell has ____ surface and ____ surface
apical, basal
Apical surface is?
free or exposed surface
Basal surface is?
attached surface, attached to underlying tissue
Apical surface may contain ___ and ____
cilia, microvilli
- Attachment: base of epithelium attached to _____ membrane
basement
- Avascularity: epithelia tissue is _____, gets nutrients by ______
avascular, diffusion
Avascular
without blood vessels
- Regeneration: epithelial tissues have high capacity for ____
renewal
Pap Smear is when _____ cells are sloughed off ____ layer of cervix
epithelial, apical
Intracellular connections are ______
cell junctions
Cell Junctions occur where cell membrane contacts cell ______ of neighbouring cell or ______ material
membrane, extracellular
What are 3 types of Cell Junctions?
Tight Junctions, Gap Junctions, Desmosomes
cell junctions are part of what kind of cells?
epithelial
Tight Junctions are?
two outer surfaces of membrane that are fused together
Tight Junctions are fused together by?
strips of proteins
Do Tight Junctions let anything pass through?
no
Gap Junctions are?
two cells joined together with gaps in them
Gap Junctions joins ____ of two cells
cytoplasm