Question

Name the principal body heat-regulating centre in our brain.

Answer 1

The forebrain of the brain regulates numerous involuntary actions of our body. Involuntary actions include sweating, breathing, heart-beat, etc.

Complete answer:
Complete step by step answer:
The hypothalamus is located at the base of the brain, near the pituitary gland & plays a crucial role in many important functions, that includes:

1. Endocrine function
2. Body’s thermoregulation
3. Regulating daily physiological cycles
4. Appetite control
5. Sexual behaviour
6. Regulating emotional responses
   The hypothalamus is divided into three main regions:
7. Anterior region- It is also called the supraoptic region that has two major nuclei- the supraoptic and paraventricular nuclei. The anterior region helps regulate body temperature through sweating, maintain circadian rhythm. Important hormones of the anterior region include:

Corticotropin-releasing hormone (CRH).
Thyrotropin-releasing hormone (TRH).
Gonadotropin-releasing hormone (GnRH).
Oxytocin.
Vasopressin.
Somatostatin.

2. Middle region or tuberal region. Its nuclei are the ventromedial and arcuate nuclei. The ventromedial nucleus controls appetite, while the arcuate nucleus releases growth hormone-releasing hormone (GHRH).
3. Posterior region or the mammillary region has posterior hypothalamic nuclei and mammillary nuclei. The posterior hypothalamic nucleus regulates body temperature by causing shiver and blocking sweat production. The mammillary nuclei are thought to be involved in memory function.

Note: The hypothalamus is a small but important area in the centre of the brain. It plays an important role in hormone production and helps to stimulate many important processes in the body and is located in the brain, between the pituitary gland and thalamus. It has a size of about the size of an almond.