[Campbell Biology P.1054] Which statement accurately distinguishes between the feedback mecha... | Practice Question

Which statement accurately distinguishes between the feedback mechanisms illustrated by secretin signaling and oxytocin signaling?

• A: Secretin signaling demonstrates positive feedback, where bicarbonate release amplifies low pH, while oxytocin signaling shows negative feedback, where milk release reduces suckling.
• B: Both secretin and oxytocin signaling pathways exhibit negative feedback, aiming to maintain homeostasis by reducing the initial stimulus.
• C: Secretin signaling involves negative feedback, as the bicarbonate response reduces the initial low pH stimulus, whereas oxytocin signaling involves positive feedback, as milk release amplifies the suckling stimulus.
• D: Secretin signaling and oxytocin signaling are fundamentally different because one is an endocrine pathway and the other is neuroendocrine, making their feedback mechanisms incomparable.