Tissue Flashcards
(31 cards)
What are the two types of epithelial tissue
Epithelial sheets, glands
What is the Epithelial sheet’s purpose
act as covering for the body structures
What is the epithelial glad’s purpose
produce secretions
epithelial sheet are classified by…
Their number of cell layers and cell shapes
How many cell layers does simple epithelium have?
one cell layer
What does the one cell layer of simple epithelium facilitate?
absorption and filtration
what is connective tissue composed of?
Extracellular matrix of amorphous ground substance and collagen, elastic or reticular fibers.
what are the classifications of connective tissue?
Loose- areolar, a dispose, and reticular tissue
Dense-dense regular and dense irregular tissues
What part of the body are part of the connective tissue?
Tendons and ligaments, bone, cartilage.
What are tendons made up of?
dense regular tissues
two atypical connective tissues
blood and lymph
What is loose connective tissue characterized by?
loosely arranged fibers and abundant ground substance.
Loose connective structure allows what?
To cushion and protect body organs
areolar tissue is made up by what?
Loosely arranged collagen, elastic, and reticular fibers; scattered fibroblasts, macrophages, cells, blood vessels and interstitial fluid-filled spaces
where is the areolar tissue located in the body?
papillary layer of the dermis
How does loose connective tissue support the body?
Supports the epithelium, cushions organs, forms the lamina propria of mucous membranes and surrounds blood vessels and nerves.
dense regular connective tissue is made up of what?
A matrix with collagen and elastic fibers, little ground substance, and fefw cells, most of which are fibroblasts.
dense regular connective tissues supports what part of the body?
skeletal system
what attaches the skeletal muscle to the bone?
tendons
what attaches bone to bone
ligaments
Why is bone harder and more rigid than cartilige?
More collagen fibers and calcium salts
where are osteocytes and chondrocytes located?
lacuane
Is bone vascular or avascular?
bone is vascular, cartilage is avascular
What does the lacunae structure do?
provide levers for muscle actions;store calcium, other minerals, and fat; and synthesize blood cells in the marrow.