Marijuana refers to the dried leaves, flowers, stems, and seeds from the hemp plant, Cannabis sativa. The plant contains the mind-altering chemical delta-9-tetrahydrocannabinol (THC) and other related compounds.Extracts with high amounts of THC can also be made from the cannabis plant (see  Marijuana Extracts ).arijuana refers to the dried leaves, flowers, stems, and seeds from the hemp plant, Cannabis sativa. The plant contains the mind-altering chemical delta-9-tetrahydrocannabinol (THC) and other related compounds.
Quick Answer. The main function of the occipital lobe is to process the visual stimuli and information received from the eyes. According to About.com, this part of the brain is responsible for specific functions such as visual perception and color recognition. Continue Reading.
The occipital lobes are the visual processing center of mammalian brains. The primary visual area is Brodmann area 17, located in the interior portion of the occipital lobe at the calcarine sulcus and sometimes continuing onto the surface of the lobe.The lobes' Peristriate regions are the sites for center visuospatial processing, for color discrimination and for discrimination of movement.he front edge of the occipital lobe is separated from the parietal lobe by the Parieto-occipital sulcus. The sides of the lobe merge with the parietal lobes along a vague boundary defined by several lateral occipital gyri, which are separated by lateral occipital sulcus.