Section 2 Flashcards
erythrocytes
- Also called RBCs
- they are needed to bring oxygen to the cells and tissues
Leukocytes
- these are WBCs that defend the body against microorganisms and promote and immune response
- in particular neutrophils are phagocytic cells
- monocytes are also phagocytic cells; they are called macrophages once they enter the tissue
Cardinal signs of inflammation
- redness
- swelling
- heat
- pain
- loss of function
Systemic signs of inflammation
- Lymphadenitis
- pyrexia
- leukocytosis
Lymphadenitis
Enlargement or inflammation of nearby lymph nodes; occurs because of filtering or draining harmful substances at the injury site
Pyrexia
Fever; chemical mediators at directly on the hypothalamus; fever stimulates phagocytosis and inhibits the growth of certain microorganisms
Leukocytosis
Elevation in WBCs
Treating acute inflammation
- reduce blood flow to the local area
- decrease swelling
- Block the action of various chemical mediators
- the goal is to minimize the damage to healthy unaffected tissue
- nonpharmacologic treatments include
- rest
- ice
- compression
- elevation
Healing
Three slides
Primary intention
- Smaller wounds with approximated wound edges heal quicker than large crater like wounds
- approximated wound edges are “lined up” or close together such as a surgical incision or papercut
- risk for infection is reduced and scarring is minimal
Secondary intention
- Larger, open, craterlike wounds must heal from the bottom up
- there’s a greater risk for infection and scarring
- these wounds produce a great deal of collagen during the healing process
Ex- burn
Restoring functional integrity
Regeneration occurs in cells that undergo mitotic division
- proliferation
- differentiation
- replacement
Proliferation
Growth and reproduction
Differentiation
Specialization
Replacement
- production of scar tissue in extensive wounds when regeneration is not possible
- permanent cells do not undergo mitosis