Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to study the function of the adrenal gland in humans [title] Learn the anatomy of the adrenal gland. [step] The adrenal gland is located directly above the kidney. There are two adrenal glands each is located on top of each kidney.

Ending1: A functional gland is located at the top right-hand corner of the kidney. The gland located on the left of the gland is located on top of the kidney and furthest to the left of the brain. Ending2: The glands are blood vessels and you can visualize the gland through the ecg, most of which is exposed through a patient's mouth. The glands are a red ring with an indicator indicator. Ending3: The adrenal gland has very important roles in maintaining homeostasis inside the body. This is manifested by the number of hormones that it secretes into the blood circulation. Ending4: The adrenal gland will have a second proton pump per psi. [substeps] The gland is located directly below the kidney.

Answer format: ending1/ending2/ending3/ending4