3.2 Connective Tissue Physiology/Anatomy Flashcards
What are the three components of connective tissue?
Cells, protein fibers, and ground substance.
What do fibroblasts do?
Are the ones that lay down the extracellular matrix fibers, they tend to be elongate in appearance.
Give examples of cells in connective tissues?
Macrophages, mast cells, osteocytes, chondrocytes, adipocytes, blood cells, reticulocytes
Where are chondrocytes located?
only found in cartilage
Define reticulocytes?
Found only in reticular connective tissue.
What are the three types of fibers in connective tissues?
1) Reticular fibers: Thin bundles of collagen 2) Elastic fibers 3) Collagen Fibers
What are the molecules found in ground substance?
Water, glycosaminoglycans, proteoglycans, and glycoproteins.
Location/Function of dense regular connective tissue?
Attaches bone to bone (ligament) and muscle to bone (tendon), releases stress in one direction.
General characteristics of dense regular connective tissue?
More collagen fibers, less ground substance, fewer cells.
Location of dense irregular connective tissue?
Most of dermis of skin; periosterum covering bone, perichondrium covering cartilage, some organ capsules.
General characteristics of dense irregular connective tissue?
More fibers (collagen), less ground substance, fewer cells
Elastic connective tissue location?
Walls of elastic arteries (such as the aorta), trachea, vocal cords and suspensory ligament of the penis.
Function of elastic connective tissue?
Allows for stretching and recoil
General characteristics of Elastic connective tissue
More fibers (elastic), less ground substance, fewer cells
What are the three types of loose connective tissue?
1) Areolar 2) Adipose 3) Reticular
Define Areolar loose connective tissue
-Papillary layer of the dermis (skin), subcutaneous layer (deep to skin, surrounds organs nerves and blood vessels. - Abundant viscous ground substance, fewer cells, fewer fibers.
Define adipose loose connective tissue
-Subcutaneous layer, surrounds, and covers some organs. -All adipocytes making up the subcutaneous layer and covering and surrounding some organs.
Define reticular loose connective tissue
Spleen, lymph nodes, thymus, and bone marrow