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The Human Body

study guide -> module 2

Exocrine glands Glands that secrete substances outward through a duct
Endocrine glands Ductless glands that secrete hormones into the bloodstream
Merocrine glands Exocrine glands that secrete without losing cellular material
Apocrine glands Exocrine glands that have cytoplasm in their secretions
Holocrine glands Exocrine glands whose secretions are made up of disintegrated cells
Extracellular matrix The chemical substances located between connective tissue cells
Fibroblasts Spindle-shaped cells that form connective tissue proper
Chondrocytes Mature cartilage cells
Stromal cells Cells that provide structure of support for parenchymal cells
Parenchymal cells Cells that provide the actual function of the tissue
Labile cells Cells that undergo mitosis regularly and quickly
Stable cells Cells do not regularly undergo mitosis but are able to if the need arises
Permanent cells Cells that cannot undergo mitosis
What are the four basic types of tissue? Epithelial tissue, connective tissue, nervous tissue, and muscle tissue
What two factors determine the distance from the free surface to the basal surface in epithelial tissue? The height of the cells and the number of layers of cells.
What is the basement membrane? The glue that the epithelial cells secret to attach the basal surface to the tissue below.
Is the basement membrane vascular or avascular? avascular
How do epithelial cells get oxygen and nutrients? The cells get oxygen and nutrients through diffusion.
What kind of exocrine gland has no cytoplasm in its secretion? Merocrine glands
What are the four types of connective tissue? connective tissue proper, bone, cartilage, and blood
What protein is found in all connective tissue proper? Collagen is found in all connective tissue proper.
Why do chondrocytes need a lacuna? The ground substance in cartilage is firm. The chondrocytes need somewhere they can live. A lacuna provides that.
Where, in general, will you find serous membranes? What will it accomplish? They are found in the organs. They lubricate organs so that they can move against one another.
Where, in general, will you find mucous membranes? What will it accomplish? They are found in tubes that open to the outside. they provide protection.
Where, in general, will you find synovial membranes? What will it accomplish? They are found in the joints, and they provide joint lubrication.
An organ's parenchymal cells are labile. If the organ is damaged, will it be as good as new once it heals? Yes, it will be as good as new.
In general, are connective tissue cells parenchymal or stromal? Connective tissue provides support. Thus, the cells are stromal.
Created by: abigaileah