Final answer:
In a tooth, blood vessels and nerves pass through the apical foramen and are housed in the pulp.
Step-by-step explanation:
In a tooth, blood vessels and nerves pass through the apical foramen and are housed in the pulp. The pulp is the innermost part of the tooth and is filled with connective tissue, blood vessels, lymphatic vessels, and nerves. It is responsible for nourishing and providing sensation to the tooth.