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The Pons Contains A) Neurons That Cause the Release of the Posterior Pituitary Hormones. B) Centres Involved in Visual Reflexes. C)

Question

The pons contains A) neurons that cause the release of the posterior pituitary hormones. B) centres involved in visual reflexes. C) vital centres for control of blood vessel diameter. D) centres for the control of respiration. E) centres that control thirst and hunger.

Solution

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Answer

The correct answer is **D) centers for the control of respiration.**Here's why:* **Pons Respiratory Centers:** The pons contains the pneumotaxic and apneustic centers, which work together with the medullary respiratory center to regulate breathing rate and depth.Let's look at why the other options are incorrect:* **A) neurons that cause the release of the posterior pituitary hormones:** These neurons originate in the hypothalamus and their axons extend down into the posterior pituitary.* **B) centres involved in visual reflexes:** While some cranial nerves associated with eye movement originate in the pons, the primary centers for visual reflexes are located in the midbrain (superior colliculi).* **C) vital centres for control of blood vessel diameter:** The primary center for control of blood vessel diameter (vasomotor center) is located in the medulla oblongata.* **E) centres that control thirst and hunger:** These centers are primarily located in the hypothalamus.