The German cockroach will eat almost anything, but is particularly attracted to fermented foods and beverage residues (beer spills). If water is present, adults can live about a month without food, but young nymphs will die of starvation within 10 days. Without food or water, the adults die in less than two weeks.
The common carotid arteries split into two main branches â the internal carotid artery and the external carotid artery. The external carotid artery is the only division of the common carotid that gives branches to the neck region and supplies the external structures of the head and face.
In Depth: Arteries and Nerves. There are 12 pairs of major nerves in the head, called cranial nerves, which serve both sides of the body. All but two pairsâolfactory and opticâarise from the brainstem. These other two pairs emerge from the brain.The cranial nerves and their responsibilities include: 1  Olfactory: smell.rteries and Nerves. Due to all of the critical functions controlled by the brain, the head houses major nerves and requires a substantial amount of blood flow.