Pseudostratified epithelia are well adapted to the digestive system because the cilia increase the surface area for absorption.
a. true
b. false
Answer: b. false
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Actin
a. has ATPase activity b. are spherical c. forms a helical chain that forms the main structural component of the thin filaments d. has characteristics a and b e. has characteristics b and c
In the late stages of pregnancy, estrogen stimulates increased
A. growth of the corpus luteum. B. release of hCG. C. production of oxytocin receptors in the uterus. D. secretion of atrial natriuretic factor by the heart.
Elderly individuals tend to be hypersensitive to vaccines.
Answer the following statement true (T) or false (F)
What is an accessory organ of the digestive system?
A. An organ that is not necessary for the digestion process B. An organ that food passes through, but it does not secrete any digestive enzymes C. An organ that accomplishes mechanical digestion of food D. An organ that contributes secretions into the alimentary canal, but food does not pass through it E. An organ that is part of the alimentary canal