In mammalian brain anatomy, the prefrontal cortex (PFC) is the cerebral cortex which covers the front part of the frontal lobe.The PFC contains Brodmann areas 9, 10, 11, 12, 46, and 47. third definition of the prefrontal cortex is the area of frontal cortex whose electrical stimulation does not lead to observable movements. For example, in 1890 David Ferrier used the term in this sense.
The blubber helps to keep them warm since they live in a very cold environment.   When harp seals are born, they have a white â¦ fur coat. The fur coat camouflages into the snow to protect them from their enemies on land.
These marine mammals are more aggressive than most other seal species. It is estimated that 592,100 of these seals are alive today. A fully grown adult male can weigh 300 kg (660 lbs) and measure 2.5 meters (8 feet) long. 3. Ribbon Seal â This species is the only one that is known to have an internal air sack, and researchers have not yet discovered its purpose.