OSMT (Ontario Society of Medical Technologists) Practice Exam

The part of the brain that regulates heart rate and blood pressure is the:

1. a. Cerebrum

2. b. Hypothalamus

3. c. Cerebellum

4. d. Medulla

The correct answer is: d. Medulla

The medulla is indeed the correct answer as it plays a crucial role in autonomic functions, including the regulation of heart rate and blood pressure. Located in the brainstem, the medulla oblongata contains vital centers that control cardiovascular and respiratory functions. It receives input from various sensors in the body and adjusts the heart rate and blood pressure accordingly, ensuring the body maintains homeostasis. Other parts of the brain, such as the cerebrum, hypothalamus, and cerebellum, have different primary functions. The cerebrum is mainly involved in higher cognitive functions, sensory processing, and voluntary muscle movements. The hypothalamus regulates a range of autonomic functions, including temperature and appetite, but it does not directly control heart rate and blood pressure. The cerebellum primarily coordinates motor movements and balance, making its functions more focused on coordination rather than autonomic regulation.