Open Question
Which of these is not part of insect immunity?a. enzyme activation of pathogen-killing chemicalsb. activation of natural killer cellsc. phagocytosis by hemocytesd. production of antimicrobial peptides
41. Immune System
Immune System
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Which of the following is the main factor that causes lymph to move through lymphatic vessels?
A
Blood pressure
B
Osmotic pressure
C
Contractions of capillaries
D
Diffusion
E
Contractions of body muscles near lymph vessels
Verified step by step guidance1
Understand that the lymphatic system is a network of vessels that transport lymph, a fluid containing white blood cells, throughout the body.
Recognize that unlike the circulatory system, the lymphatic system does not have a central pump like the heart to move lymph through the vessels.
Consider the options given: Blood pressure, Osmotic pressure, Contractions of capillaries, and Diffusion. Note that these are mechanisms that could potentially move fluids in the body.
Identify that blood pressure primarily affects the circulatory system and not the lymphatic system directly.
Realize that the main factor that causes lymph to move through lymphatic vessels is the contractions of body muscles near lymph vessels, which help push the lymph through the vessels as they contract and relax.
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