The adhesion step in extravasation is most likely to be mediated by:
A. integrin proteins.
B. cell wall proteins.
C. collagen.
D. keratin.
A
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Single-celled eukaryotic organisms that lack chlorophyll are called
A. Algae. B. Protozoa. C. Chlorophyta. D. Salmonella.
Choose the correct order of the chambers through which oxygen-poor blood flows in an amphibian heart
a. atrium ? ventricle ? sinus venosus ? conus arteriosus b. atrium ? conus arteriosus ? ventricle ? sinus venosus c. sinus venosus ? atrium ? ventricle ? conus arteriosus d. conus arteriosus ? atrium ? sinus venosus ? ventricle e. ventricle ? atrium ? conus arteriosus ? sinus venosus
A red blood cell is in an artery in the right leg. How many capillary beds will it pass through before it returns to the left atrium of the heart?
A) none B) one C) two D) three
Certain complement components stimulate inflammation and phagocytosis.
Answer the following statement true (T) or false (F)