The satiety centre is located in the
**Core Concept**
The satiety centre is a crucial brain region responsible for detecting and regulating hunger and fullness signals. It plays a key role in energy balance and body weight management by integrating information from various physiological and psychological factors.
**Why the Correct Answer is Right**
The satiety centre is primarily located in the hypothalamus, specifically in the ventromedial nucleus (VMN) and lateral hypothalamus (LH). The VMN is involved in detecting signals of satiety and fullness, while the LH is responsible for stimulating appetite. The integration of these signals allows the brain to regulate food intake and maintain energy homeostasis. The release of hormones such as leptin and ghrelin also plays a crucial role in signaling satiety and hunger to the brain.
**Why Each Wrong Option is Incorrect**
**Option A:** Not applicable (no information provided)
**Option B:** Incorrect - The satiety centre is not located in the cerebral cortex.
**Option C:** Incorrect - The brainstem does contain some centres involved in hunger and satiety, but the primary satiety centre is located in the hypothalamus.
**Clinical Pearl / High-Yield Fact**
The ventromedial nucleus (VMN) is often referred to as the "satiety centre" due to its key role in detecting signals of fullness and satiety. Damage to the VMN can lead to hyperphagia and obesity.
**Correct Answer:** C. The brainstem.