wk 7: blood, lymph, and immune system Flashcards
functions of blood
- maintains body’s homeostasis
- transport nutrients, vitamins, and minerals
- transports waste products
- transports hormones
- transports gases
- protect against foreign substances
- forms clots
white blood cells can be categorized into…
granulocytes or agranulocytes
leuk/o-
R/CF: white
erythr/o-
R/CF: red
fibr/o-
R/CF: fiber
-blast
S: immature cell
-stasis
S: control, stop
hem/o-
R/CF: blood
thromb/o-
R/CF: blood clot
antigens
a substance capable of triggering an immune response
*loc: surface of RBCs
loc: antibodies
in the plasma
antigens can be categorized into what two groups?
ABO and Rh
a person with only antigen A has…
type A blood
a person with only antigen B has…
type B blood
a person with both antigen A and antigen B has…
type AB blood
a person with neither antigen has…
type O blood
which blood type is known as the universal donor?
type O blood
if an Rh antigen is present, the blood is said to be…
Rh-positive
anti-
P: against
-gen
R: produce, create
-body
R: substance, body
Rhesus factor
Greek: mythical king of Thrace
what are the body’s three lines of defense?
- physical
- humoral
- cellular
physical defense mechanism examples?
- skin
- hair
- mucous membranes
- saliva, sweat, & tears
- cilia & mucus
humoral defense mechanism examples?
antibodies
- tag bacteria, etc for destruction
cellular defense mechanism examples?
lymphocytes
- directly attack suspicious cells
what are the functions of the lymphatic system?
- absorbs excess interstitial fluid & return it to the bloodstream
- remove foreign chemicals, cells, and debris from tissues
- absorb dietary lipids from the small intestine
T lymphocytes
“T” for thymus: location of where these cells develop and mature
- 75% - 85% of body lymphocytes