Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
Related questions
Question
Although the innate immune system is found in all animals, some invertebrate and vertebrate characteristics differ. Identify the example that is ONLY true of the vertebrate innate immune system.
-
A.
Some hemocytes can entrap or break down pathogens, whereas others produce defense molecules or antimicrobial peptides.
-
B.
Barrier defenses, such as skin and exoskeletons, prevent pathogens and foreign particles from entering the animal’s body.
-
C.
Toll transmembrane receptors activate the production and secretion of
fungi -killing antimicrobial peptides. -
D.
Natural killer cells detect abnormal surface proteins and then release chemicals that cause cell death.
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