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 lobe is one of the four major lobes of the cerebral cortex in the brain of mammals. The occipital lobe is the visual processing center of the mammalian brain containing most of the anatomical region of the visual cortex.The primary visual cortex is Brodmann area 17, commonly called V1 (visual one).he occipital lobe is one of the four major lobes of the cerebral cortex in the brain of mammals. The occipital lobe is the visual processing center of the mammalian brain containing most of the anatomical region of the visual cortex. The primary visual cortex is Brodmann area 17, commonly called V1 (visual one).