Head and neck anatomy may be important in the development of the BBB. Astrocytes may also be responsible for transporting ions (electrolytes) from the brain to the blood. Blood from the brain and neck flows from: (1) within the cranium via the internal jugular veins, a continuation of the sigmoid sinuses. The right and left external jugular veins drain from the parotid glands, facial muscles, scalp into the subclavian veins. The right and left vertebral veins drain the vertebrae and muscles into the right subclavian vein and into the superior vena cava, into the right atrium of the heart. The lymphatic system drains the
Head and Neck Cancer Alliance head and neck cancer In addition to year-round events and awareness efforts such as benefit concerts and walkathons, the Alliance sponsors a week-long series of events to promote early detection and public awareness of this disease. Oral, Head and Neck Cancer Awareness Week (OHANCAW), Cancers of the mouth (lip and tongue), larynx (voice box), pharynx (throat), salivary glands, and nose/nasal passages are generally known as head and neck cancer. These cancers typically form in the squamous cells, which are the cells lining the moistened, mucosal locations of the head and neck, such as the nose, mouth and throat. Such squamous