Answer:
A. Antagonist
Explanation:
The triceps, acting in opposition, is called the antagonist. Because the two muscles are located on opposite sides of the arm, the triceps must relax enough to allow the biceps to tense and contract during a curl. As it contracts, it shortens. As the triceps relaxes, it lengthens. (google)
Answer: Parietal cells
Explanation:
Parietal cells secrete hydrochloric acid in the stomach. They are also known as oxyntic cells. They are the epithelial cells which is located in the gastric glands found in the lining of the fundus and cardia of the stomach.
The proton pump blocks the hydrogen ion pump in the parietal cells. These drugs are commonly known by the name of omeprazole.
They block the the H+/K+ ATPase proton pump which inturn inhibits both basal and stimulated secretion of the gastric acid from the cells.
Answer: Oviparity, expulsion of undeveloped eggs rather than live young. The eggs may have been fertilized before release, as in birds and some reptiles, or are to be fertilized externally, as in amphibians and many lower forms
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