They are called the chief cells. These cells are found in the parathyroid gland. they produce PTH and increase Ca2+ levels. These are small round cells with a central nucleus. PTH is antagonist to calcitonin which reduces Ca in body. Parathyroid glands found on the posterior surface of thyroid gland. There is a superior/inferior one. They are made up of chief and oxyphil cells, the chief cells produces the parathyroid hormone while the oxyphil cells no one knows what they do.
Cell division is important because it helps the body to heal or repair in the case of an injury and helps in the formation of gametes which add up to aid reproduction in multicellular organisms
Answer:
(B) HEK cells exposed to the most hypotonic conditions will display the greatest degree of AQP5 membrane localization, allowing water to flow into the cells.
Explanation:
The function of AQP5 (an aquaporin) is to allow the water to move into or out of the cell down the concentration gradient. When placed in hypotonic solutions, the internal environment of HEK cells will be hypertonic. Water always moves from hypotonic (higher water concentration) to hypertonic (lower water concentration) solution.
Hence, the HEK cells exposed to the hypotonic conditions will localize AQP5 in their membranes to allow the water to move from out hypotonic conditions to the inner hypertonic environment.