(i) Thinking: Cerebrum. The cerebrum is responsible for higher-level cognitive functions, including thinking, learning, memory, and problem-solving.
(ii) Blood pressure: Medulla oblongata. The medulla oblongata is part of the brainstem that controls several autonomic functions, including blood pressure regulation.
(iii) Maintaining posture and balance: Cerebellum. The cerebellum plays a crucial role in coordinating movement and balance. It receives sensory input and helps in maintaining posture and equilibrium.
(iv) Salivation: Medulla oblongata. The medulla oblongata controls several involuntary actions, including salivation, through the autonomic nervous system.