Endocrine system t2 Flashcards
Leukocytes help defend the body against ___.
pathogens
do leukocytes contain hemoglobin? &why
no bc it’s not their job to carry respiratory gases
Do leuckocyts contain organelles and a nucleus?
yes
WBC are mostly found where
in the bodies tissues
Pathogen def
anything that cuases sickness and disease
how do wbc enter tissues
from blood vessels
Diapedesis:
squeezing through endothelial cells of blood vessels
Chemotaxis:
- attraction of wbc to infections sight
- molecules released from damaged cells or pathogens
Chemo:
chemicals being released
Taxis: (+/-)
positive = toward negative = away
WBC can be classified as ___ or ___. (look wise)
granulocytes or agranulocytes
Granulocyte :
with visible granules seen with light microscope
Agranulocytes:
with smaller granules not visible with light microscope
WBC granulocytes include
- neutrophils, eosinophils, basophils
WBC agranulocyes include
lymphocytes monocytes
What are neutrophils in terms of numbers?
most numerous in blood
WBC are also called?
polymorphonuclear leukocytes
What do neutrophils do?
enter tissue spaces and phagocytize infectious pathogens
What happens with neutrophils when an infection occurs?
numbers rise dramatically in chronic bacterial infections
Eosinophils stain what color
reddish granules
What do eosinophils do?
phagocytize antigen-antiboy complexes or allerengs, active in cases of parasitic worms
Basophils stain what color
blue-violet granules
Basophils contain what two things that help when it comes to inflammation?
histamine and heparin
Basophils are ____. (number wise)
rare