In animals, the pouch that forms at the entrance to the large intestine is the
A. gastrovascular cavity.
B. rumen.
C. cecum.
D. anus.
E. appendix.
C. cecum.
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This animal has tentacles, beaklike mouth
parts, and a radula. This animal is ___.
a. a squid b. a nautilus c. a clam d. an earthworm e. more than one of these
Which of the following functions does the stomach perform the LEAST? a. absorption b. digestion c. storage d. mixing e. movement
Which structures lining the tissue surface of the respiratory tract can be damaged by airborne particles?
A) cilia B) alveoli C) bronchi D) capillaries
Which of the following statements about eosinophil function is CORRECT?
A. They produce defensins. B. They secrete toxins onto virally infected cells. C. They are involved in the removal of neoplastic cells. D. They attach to the surface of parasitic helminths and release toxins that kill the parasite. E. They identify and spare normal cells.