The head as every one knows contains the brain covered by the skull. The brain contains three distinct portions, viz., (1) the Cerebrum (2) the Cerebellum (3) the Medulla Oblongata. The cerebellum is divided into two halves, the right and the left. The right half controls the left side of the body and the left half controls the right side of the body. This fact will expose the absurdity of identifying the flow of breath in the left nostril with Ida Nadi and flow of breath in the right nostril with Pingala Nadi. Besides its manifold functions it is the seat of memory and consciousness covering all evolutionary stages of existence of this life as also of the past. The cerebellum is situated under the hind part of the cerebrum. This portion of the brain regulates the equilibrium of the body and co-ordinates mental and physical activities.

The Medulla Oblongata is the smallest portion of the brain controlling the vital functions of the body such as regulation of heart beat and breathing. It also controls reflex centres and is situated just below the cerebellum. It is in fact a spinal bulge at the top of the neck. The spinal cord descending from this bulge through the vertebral column is only in the nature of a telegraph wire to carry impulses to and from brain and other parts of the body. If any part of the body is to be called Muladharam it should be this portion, the base of the brain.

The Medulla Oblongata, the neck and throat region of the body is called Kaluthu in Dravidian Tamil and Kantam in Aryan Sanskrit. The sacred syllable of Ganesha the presiding Deity of Muladharam is "Glowm or Gam". This sacred syllable as well as the anatomical terms like gullet and glottis and the sanskrit word galam for the neck are related to the Tamil word Kaluthu above which muladharam is situated. The above delineation would amply confirm the identity of Muladharam with Medulla Oblongata.