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Bio 235 Chapter 4 Athabasca with complete verified solutions already graded A+
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Bio 235 Chapter 4 Athabasca with complete verified solutions already graded A+
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Bio 235 Chapter 4 Athabascawith complete verified
solutions already graded A+
Types of tissue - answer 1. Epithelial Tissue
2. Connective Tissue
3. Muscle Tissue
4. Nervous Tissue
Cell junction types - answer gap junctions, tight junctions, desmosomes
and hemidesomoes
tight junctions - answer weblike strands of transmembrane proteins that
fuse together the outer surfaces of adjacent plasma membranes to seal off
passageways between adjacent cells
adherens junctions - answer contain plaque, a dense layer of proteins on
the inside of the plasma membrane that attaches both to membrane
proteins and to microfilaments of the cytoskeleton. Cadherins
Desmosomes - answer cadherins+plaque. keratin. Prevent epidermal
cells from separating
Hemidesmosomes - answer attach epithelial cells to the basement
membrane
gap junctions - answer provide cytoplasmic channels between adjacent
animal cells, connexions
, Epithelial Tissue VS. Connective tissue - answer 1. Epithelial has many
packed cell compare to connective tissue
2. Epithelial cells don't have blood or nerve supply
Structure of Epithelial Tissue - answer 1. Apical(surface) free, may
contains cilia
2. Lateral surface, faces adjacent cells. has, tight junction, adherin
junction, desmosomes and gap junction
3.Basal surface, basement layer
Basement layer - answer area between the epithelium and the underlying
connective tissue
Basement layer made up of - answer 1. Basal Lamina, contains collagen
and lamina
2. Reticular Lamina, contains lamina from fibroblast
avascular - answer no blood vessels
Epithelial divides into two groups - answer 1. covering/lining
2. glandular (secretion)
Arrangement of cell in layer - answer Simple epithelium, single layer of
cell,
Pseudostratified epithelium - answer like simple but more layer
Stratified epithelium - answer 2 layers
simple squamous epithelium - answer single layer of flattened cells
simple cuboidal epithelium - answer secretion and absorption
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