Which parts of the brain control blood pressure?

Concept: Short-term blood-pressure control depends mainly on autonomic cardiovascular centers in the brainstem.

The medulla oblongata contains the principal vasomotor and cardiac-control nuclei; the pons modulates related autonomic and respiratory activity.

Application

In the BPSC 2023 source paper, the official final key selects ‘Pons, medulla, cerebellum’. Among the offered sets, this is the intended keyed grouping because it contains the medulla and pons. This preserves the official answer to an imprecisely worded source item; it does not imply that all three regions are equally direct blood-pressure centers. The cerebellum mainly coordinates movement and balance, whereas the medulla contains the principal cardiovascular control centers and the pons contributes brainstem modulation.

Cross-check

Standard anatomy references place the principal blood-pressure control centers in the medulla and describe the brainstem as regulating blood pressure. This agrees with the official BPSC key for the offered set.

Contrast

• Spinal cord, skull, hypothalamus: the spinal cord is not a part of the brain, and the skull is protective bone; although the hypothalamus influences autonomic and endocrine regulation, the complete set does not name brain regions that jointly form the intended answer.

• Spinal cord, skull, cerebrum: the spinal cord and skull are not brain regions, and the cerebrum is chiefly associated with higher functions rather than the main short-term vasomotor center.

• More than one of the above: the official source key identifies one offered combination, not multiple complete combinations.

• None of the above: an offered combination contains the brainstem regions emphasized by the source key.