Connective, Muscle, and Neural Tissues Flashcards
Reticular fibers
Thin fibers similar to elastic fibers that form a network
Location: around muscle cells
Function: provide support to the blood vessel walls
Elastic fibers
For a network within the tissue as their fibers join one another
Collagen fibers
Composed of protein collagen and they occur in different types and are tough but flexible
Location: lay parallel to one another
Function: provide strength in the bone, tendon, and ligaments
Mesenchymal cells
Function: responds to the presence of pathogens by differentiating into other cells that produce antimicrobial substances. Also changes into fibroblasts which helps with the healing of wounds
Adipose tissue
Contains fat cells that have large droplets of oil or fat and the nucleus is pushed over to one side
Melanocyte
Function: produces pigment
Location: found in skim and the hair fibers
Plasma cell
Function: responds to pathogens by producing antibodies
Mast cell
Small, mobile cells containing granules
Function: granules are released to dilate blood vessels to increase blood flow to the injured area
Macrophages
Involved in defending the body tissues
Wandering macrophage
Location: moves through the tissues
Function: phagocytizing on bacteria and other pathogens
Sessile macrophage
Location: remains in a localized area of the tissue
Lymphocyte
Involved in defense
Function: white blood cell is stimulated by foreign substances where it reverts to antibody-producing plasma cells
Red blood cells
Location: within blood vessels
Muscle tissue
Muscle cells bound together end to end to form long muscle fibers
Muscle fibers
Contain several nuclei because it is composed of several cells
Muscle
Under voluntary control, has nuclei and have bands called striations
Cardiac muscle
Not under voluntary control and consists of nuclei but with no striations
Location: found in the heart
Striated muscle
Location: found in moving parts of the body such as the limbs
Smooth muscle
Contains many cells with nuclei and no striations which is because there’s fewer microfilaments
Location: found in the linings of the visceral organs like the stomach and urinary bladder and the linings of the blood vessels
Function: provides support
Nerve cell
Contains cell bodies and a long extension called axon
Function: uniquely adapted to generate and transmit impulses
Location: nerve impulses travel down the axon away from cell body
Cell body
Location: where the cytoplasm, nucleus, organelles, and other cell structures reside
Axon
A long extension that ends in numerous fibers
Dendrites
Treelike branches where impulses go through
Function: receives impulses from other nerve cells and transports them to the cell body for interpretation and continue them down the neural pathway