Prof .Saeed Makarem Prof .Saeed Makarem DEFINATION It is a muscular tube that extends from the base of the skull to the 6th cervical vertebra. It is continuous below with…
Prof .Saeed Makarem Prof .Saeed Makarem DEFINATION It is a muscular tube that extends from the base of the skull to the 6th cervical vertebra. It is continuous below with…