The walls of the alimentary canal have a similar arrangement of tissue layers called ____
a. mucosa
b. tunics
c. serosa
d. propria
b
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Cell death first occurs
A. at puberty. B. in the fetus. C. at age 60. D. at age 50.
What information have conservation physiologists uncovered about possible reasons that some sockeye salmon breed successfully while others are unsuccessful at reproduction?
What will be an ideal response?
In which of the following activities do the biceps brachii function as antagonists?
A. straightening the elbow during a push-up B. straightening the elbow during a pull-up C. curling a barbell from the floor to waist height D. both A and B
Following an injury, chemicals are released or activated in the injured tissues. These chemicals, called mediators of inflammation, include
A) histamine. B) neutrophils. C) prostaglandins. D) pus. E) Both histamine and prostaglandins are mediators of inflammation.