The pineal gland is an endocrine gland, like the pituitary gland, thyroid gland, adrenal gland, and pancreas. Like other endocrine glands, it secretes a hormone -- in this case melatonin.The pineal gland was the last endocrine gland to have its function unveiled, partially because of its small size, roughly that of a pea, and its structural uniformity.he pineal gland is located near the center of the brain. Shamans have claimed that the pineal gland is a connection between the earthly realm and a spirit world. Endocrine glands include the adrenal gland. The pineal gland secretes melatonin, which promotes sleep.
The figure is an edge view of three charged metal electrodes: 1. Draw a graph of versus over the region. Hint: Assume that at. [along the y-axis, it's V(kV). along the x-axis it's x(cm).
Electrical conductivity in metals is a result of the movement of electrically charged particles. The atoms of metal elements are characterized by the presence of valence electrons - electrons in the outer shell of an atom that are free to move about. It is these 'free electrons' that allow metals to conduct an electric current. Because valence electrons are free to move they can travel through the lattice that forms the physical structure of a metal.