Question

multiple choice question
which part of the medulla oblongata exerts sympathetic control over blood vessels throughout the body?

pyramids

vasomotor center

cuneate nucleus

cardiac center

Explanation:

To solve this, we analyze each option:

• Pyramids in the medulla are for motor tract decussation, not blood vessel control.
• Vasomotor center in the medulla controls sympathetic regulation of blood vessels (vasoconstriction/vasodilation) to regulate blood pressure and vessel tone.
• Cuneate nucleus processes sensory info (proprioception, touch), not vascular control.
• Cardiac center controls heart rate/rhythm, not blood vessels generally.

Answer:

B. Vasomotor center