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Once outside the blood vessels, leukocytes move through the interstitial spaces sing a form of self-propulsion called ____ motion.
Once outside the blood vessels, leukocytes move through the interstitial spaces sing a form of self-propulsion called ____ motion.a. chemotactic
b. amoeboid
c. flagellar
d. phagocytic
Final answer:Leukocytes use amoeboid motion to propel themselves through interstitial spaces after leaving blood vessels, often guided by positive chemotaxis, and they enter tissues through diapedesis. The correct option is b. amoeboid.Explanation:The form of self-propulsion that leukocytes use once they have moved outside the blood vessels is known as amoeboid motion. During this process, leukocytes extend their plasma membranes to move through the interstitial spaces. This type of movement is highly similar to the movement exhibited by amoebas, continuously changing their shape to move. Leukocytes often use positive chemotaxis, which is the attraction to chemical signals released from sites of infection or injury, as a guidance mechanism to move towards the area where they are needed. Diapedesis is the process by which leukocytes squeeze through capillary walls to enter tissues from the bloodstream....