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The Human Body
study guide -> module 2
Question | Answer |
---|---|
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. |