What is the leading hypothalamus?
In the human brain, the hypothalamus is a structure responsible for several autonomous functions. The autonomic nervous system regulates unconscious processes such as body temperature, heart rhythm and breathing. One part of this structure is the anterior hypothalamus, which is involved in several processes.
The preoptic area is part of the front hypothalamus. It plays a role in body temperature regulation. There are neurons in this area that respond to the temperature of the hypothalamus, also called the core temperature. Other neurons receive input from sensory cells on the skin and in the spinal cord that detects temperature changes.
Having several different input neurons allows the front mortatham to determine the total body temperature. These send signals to lower areas that can affect the temperature. The reactions may vary depending on whether the temperature is caused by internal or external conditions. For example, influencing metabolic processes can increase the internal temperature. Shivering is an automatic response that can help the bodyReact to Studené outer temperature. Pyrogens are created in the body and increase signals from sensory cells that detect cold. This activity causes the anterior hypothalamus to increase body temperature, resulting in a fever.
Another role of this area of the hypothalamus, which is necessary for normal functioning, includes sleep. The suprachiasmatic core in the hypothalamus responds to the presence of light, causing this structure to send messages to the Pineal gland. This will cause melatonin to stop producing. Among other things, Melatonin plays a role in raising sleep melatonin. A variety of reactions to different light levels cause the front hypothalamus to help regulate circadian rhythms.
thirst and hood is mediated part of this structure. In the front area, lateral hypothalamus has neurons that respond to lower blood glucose levels. Blood glucose levels create activity in this oBlasti and when these neurons fire, the individual feels a desire for eating.
One area in the front hypothalamus can help regulate aggressive behavior. Basolateral hypothalamus responds to chemical neurotransmitters such as vasopressin and serotonin. Vasopressin activates cells in this area that leads to aggressive behavior such as biting, hamsters. Serotonin prevents the activation of these neurons, reducing aggression.
The media preoptic core in this area contains differences in size between men and women. In men, this structure is larger and releases hormones that affect the pituitary gland. These hormones are involved in sexual maturation in men. The stimulation of this core caused sexual behavior in rats involved in an animal.