Select the correct statement regarding smooth muscle
a. It composes the walls of the heart.
b. It is absent in the walls of hollow organs.
c. Its cells are multinucleated.
d. Its cells are spindle-shaped.
e. Its cells lack actin and myosin.
D
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The pollex has only one IP joint.
Answer the following statement true (T) or false (F)
When a person has diarrhea, how is intestinal function different than normal?
A) Greater water absorption than usual occurs in the large intestine. B) Intestinal motility is increased. C) Intestinal motility is reduced. D) Passage of nutrients into the hepatic portal system is reduced. E) None of the answers are correct.
When an enzyme's conformational change results in the enzyme hugging the substrate in its active site, the action is referred to as the ________ model of enzyme function.
What will be an ideal response?
Which is NOT typically a step in the cAMP second-messenger system?
A. A first messenger binds to a transmembrane receptor. B. There is dissociation of G-protein subunits. C. An activated G-protein subunit phosphorylates cAMP-dependent protein kinase. D. Adenylyl cyclase converts ATP into cAMP. E. Active cAMP-dependent protein kinase phosphorylates cell proteins.