Girasol definition, an opal that reflects light in a bright luminous glow. See more.
Pheophytin or phaeophytin (abbreviated Pheo) is a chemical compound that serves as the first electron carrier intermediate in the electron transfer pathway of Photosystem II (PS II) in plants, and the photosynthetic reaction center (RC P870) found in purple bacteria.
The parathyroid glands are different than the thyroid gland, even though the names are similar. The four parathyroid glands are usually on the back of the thyroid gland, but they can be located around the jaw or neck.Parathyroid glands secrete a hormone called PHT.The PHT regulates the exchange of calcium between the blood and the bones. When the parathyroid gland is over active, too much calcium is pulled out of the bones. This is called hyperparathyroidism or parathyroid disease. Bones need calcium for strength.arathyroid glands secrete a hormone called PHT. The PHT regulates the exchange of calcium between the blood and the bones. When the parathyroid gland is over active, too much calcium is pulled out of the bones. This is called hyperparathyroidism or parathyroid disease. Bones need calcium for strength.