Vaginal lubrication. Vaginal lubrication is a naturally produced fluid that lubricates a woman's vagina. Vaginal lubrication is always present, but production increases significantly near ovulation and during sexual arousal in anticipation of sexual intercourse. Vaginal dryness is the condition in which this lubrication is insufficient, and sometimes artificial lubricants are used to augment it. Without sufficient lubrication, sexual intercourse can be painful to women as well as their male partners. The vaginal lin
Therefore, the basal ganglia can also be defined as a large mass of grey matter composed of the corpus striatum, amygdala and claustrum, and is situated deep within the white matter of the cerebral hemispheres.he basal ganglia or basal nuclei are large masses of grey matter located within the central core of white matter of the cerebral hemispheres. The basal ganglia is composed of the following grey nuclei:
basal membrane, a sheet of tissue that forms the outer layer of the choroid and lies just under the pigmented layer of the retina. It is composed of elastic fibers in an otherwise thin homogenous layer.asal membrane, a sheet of tissue that forms the outer layer of the choroid and lies just under the pigmented layer of the retina. It is composed of elastic fibers in an otherwise thin homogenous layer.