A physiology student is comparing how the hypothalamus communicates with different parts of the pituitary gland. Which structure specifically transports releasing hormones from the hypothalamus to the anterior pituitary?

• A. Direct synaptic transmission from hypothalamic neurons
• B. Hormones carried through portal blood vessels
• C. Passive movement of hormones through the meninges
• D. Transmission through astrocyte networks

Answer: (B)