Final exam chapter 14

18 terms by jarmstrong4

Create a new folder

Advertisement Upgrade to remove ads

host defenses

those that we are born with and those that we are acquired from

innate,natural defenses

present at birth that provide nonspecific resistance to infection

adaptive immunities

are specific and must be acquired

first line of defense

any barrier that blocks invasion at the portal of entry-nonspecific

second line of defense

protective cells and fluids; inflammation and phagocytosis-nonspecific

third line of defense

acquired with exposure to foreign substance; produces protective antibodies and creates memory cells-specific

immunology

the study of the body's second third lines of defense

Fnx's of a healthy functioning immune system:

surveillance of the body, recognition of foreign material, destruction of entities deemed to be foreign

white blood cells (leukocytes)

innate capacity to recognize and differentiate any foreign material

nonself

foreign material

self

normal cells of the body

pathogen-associated patterns (PAMPS)

molecules shared by microorganisms

pathogen recognition receptors (PRRs)

receptors on WBC's for PAMP'sneutrophils

neutrophils

55%-90% of wbc's, multilobed nuclei;small purple granules containing digestive enzymes. FNX is general phagocytosis. Life span 2 days,w with only 4-10 hours spent in circulation

eosinophils

1%-3% wbc's, Bilobed nucleus w/ lg orange granules containing toxic proteins, inflammatory mediators,and digestive enzymes. FNX is destruction of lg eukaryotic pathogens such as worms and fungi. Found in higher #'s in spleen and bone marrow.

basophils

0.5%of wbc's, pale staining contricted nuclei w/ dark blue-black granules. FNX respond to lg eukaryotic pathogens and recruit other leukocytes. Cytoplasmic granules contain histamines,prostaglandins,and chemical mediators of the allergic response.

monocytes

3%-7%wbc's, largest WBC;nuclei lg,ovoid, and often indented--no cytoplasmic granules visible. FNX phagocytosis, followed by final differentiation into macrophages and dendritic cells. Monocytes also secrete chemicalks that moderatwe the fnx's of the immune system.

lymphocytes

20%-35%wbc's Small spherical cells with uniformly staining dark, round nuclei FNX is specific (acquired) immunity. 2 types of lymphs exist Tcells responsible for cell mediated immunity, B cells are responsible for humoral immunity.

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions above and try again

Example:

Reload the page to try again!

Reload

Press Cmd-0 to reset your zoom

Press Ctrl-0 to reset your zoom

It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

Star this term

You can study starred terms together

NEW! Voice Recording

Create Set