noun
definition
A region of the forebrain located below the thalamus, forming the basal portion of the diencephalon, and functioning to regulate body temperature, some metabolic processes and governing the autonomic nervous system.
Examples of hypothalamus in a Sentence
This resetting of the hypothalamus is usually caused by small molecules called pyrogens in the blood.
Granulomas in the hypothalamus or posterior pituitary can cause diabetes insipidus.
This study revealed that the action of Hoodia's steroidal glycoside was directly on the hypothalamus, the part of the brain controlling appetite.
According to the Centers for Disease Control and Prevention, the body's internal clock is located in the brain at the base of the hypothalamus.
Normal menstrual periods are the result of proper functioning and synchronization of the hypothalamus, pituitary gland, and ovaries.
As of the early 2000s, narcolepsy is thought to be an orexin deficiency syndrome; that is, it develops when a person's hypothalamus does not secrete enough orexins to keep the person from falling asleep at inappropriate times.
The hypothalamus is a small area of the brain that helps control the reproductive functions as well as many other important bodily functions.
Gonadotropin-releasing hormone is released by the hypothalamus in the brain, where it moves to the pituitary gland.
In the brain's hypothalamus, a special supra chiasmatic nucleus (SCN) responds by sending messages to the other parts of the body to get you moving, including hormones.
When this information contradicts the established rhythm of the body's internal clock, the hypothalamus attempts to adjust by triggering activities and functions that the body is not yet ready for, resulting in the symptoms of jet lag.
The "thermostat" that controls this process is located in the hypothalamus, a small structure located deep within the brain.
The gene allows cells in the hypothalamus (the part of the brain that regulates sleep behavior) to receive messages from other cells.
In the late 1990s, three independent research groups discovered a neuropeptide system in the hypothalamus, the part of the brain that regulates body temperature and appetite.
The nerve cells, or neurons, in this part of the hypothalamus secrete substances known as hypocretins or orexins, which regulate the sleep/wake cycle in humans.
Hypocretins-Chemicals secreted in the hypothalamus that regulate the sleep/wake cycle.
This variation is normal and is usually the result of imperfect coordination between the hypothalamus, the pituitary gland, and the ovaries.
Oligomenorrhea that occurs in adolescents is often caused by immaturity or lack of synchronization between the hypothalamus, pituitary gland, and ovaries.
In a few cases the doctor may order an MRI to rule out tumors affecting the hypothalamus or pituitary gland.
Limbic system-A group of structures in the brain that includes the hypothalamus, amygdala, olfactory bulbs, and hippocampus.
As of the early 2000s, there are accurate blood tests for most of the hormones in the body, including those from the pituitary and even some from the hypothalamus.
Individuals with PWS lack the ability to feel full or satiated because of a flaw in the hypothalamus part of their brain, which normally registers feelings of hunger and satiety.
These drugs work by affecting the hypothalamus area of the brain, where chemicals that trigger satiety are regulated.
Though studies of the hCG diet are ongoing, it is believed that the diet works because hCG affects the functioning of the hypothalamus by promoting consumption of excessive amounts of adipose deposits.
Infection also involves motor cortex, hypothalamus, and globus pallidus, brainstem nuclei, reticular formation, cerebellar roof nuclei, and vermis.
This hormone is secreted by the pituitary gland and monitored by thyrotropin-releasing hormone (TRH ), which is produced in the hypothalamus gland.
Levels of cortisol and adrenocorticotrophic hormone, aldosterone, insulin and regulation by the hypothalamus are all implicated too.
Within the brain, the hypothalamus produces gonadotrophin-releasing hormone (GnRH) which is secreted into the pituitary gland (1 ).
Feeding is controlled by a part of the brain called the hypothalamus.
Brain Model Tutorial A good page for learning the various parts of the brain including hypothalamus etc. 4* .
The amygdala then stimulates the hypothalamus to produce corticotropin-releasing hormone.
Clients & Therapists Clients and therapists start by translating the unconscious messages that trigger the hypothalamus to produce the symptoms of illness.
Diseases affecting the hypothalamus In contrast, damage to the hypothalamus often leads to frank obesity.
The former is produced by the hypothalamus responding to lowered levels of salt in the blood.
They are controlled by the pituitary gland, which is controlled by the hypothalamus.
These results indicate that disruption of the nucleus accumbens or lateral hypothalamus alter the expression of emotional behaviors.
These are all regulated from an area of the brain called the suprachiasmatic nucleus, which is in the hypothalamus.
In 2002, they examined the region of the brain's hypothalamus containing the arcuate nucleus, or ARC.
Nerve impulses from the hypothalamus stimulate the posterior pituitary to produce ADH when the osmotic pressure of the blood rises.
Hormonal effects can be caused either by damage to the pituitary gland itself or to the hypothalamus, which controls the pituitary.
Look right here on the sagittal section, right below the hypothalamus.
A stroke or tumor can damage the hypothalamus, causing the body's thermostat to malfunction.
The hypothalamus is the part of the brain that controls body temperature, cellular metabolism, and such basic functions as appetite for food, the sleep/wake cycle, and reproduction.
The hypothalamus also secretes hormones that regulate the pituitary gland.
The hypothalamus and pituitary may fail to produce enough hormone to stimulate the ovaries to produce their hormones.
In some cases the doctor may order an MRI to rule out tumors affecting the hypothalamus or pituitary gland.
Tumors of the hypothalamus and the pituitary gland or abnormalities of the reproductive organs usually require surgery.
The growth process begins in the lower part of the forebrain in a small organ called the hypothalamus.
The hypothalamus releases hormones that regulate the production of other hormones.
When the hypothalamus releases growth hormone-releasing hormone (GHRH), the anterior pituitary is stimulated to release growth hormone (GH).
Body temperature is set by the thermoregulatory center, located in an area in the brain called the hypothalamus.