Ahad, 12 Ogos 2012



Meaning of Hypothalamus according to Oxford Medical Dictionary 5th Edition :

- The right region of the forebrain, in the floor of the third ventricle, linked with the thalamus above and pituitary gland below.

- It contains several important centres controlling :
# body temperature
# water balance
# sexual function

-It is also closely connected with emotional activity and sleep, and function as a centre for the integration of hormonal and autonomic nervous activity through its control of the pituitary secretions.

Hypothalamus in Chapter Amino Acid & Protein :

- Oxytoxin, is a nonapeptide ( formed 9 amino acids ).

- It is a hormone synthesized by hypothalamus and stored and secreted by the posterior pituitary.

From Wikipedia :

The hypothalamus (from Greek ὑπό = under and θάλαμος = room, chamber) is a portion of the brain that contains a number of small nuclei with a variety of functions. One of the most important functions of the hypothalamus is to link the nervous system to the endocrine system via the pituitary gland (hypophysis).

The hypothalamus is located below the thalamus, just above the brain stem. In the terminology of neuroanatomy, it forms the ventral part of the diencephalon. All vertebrate brains contain a hypothalamus. In humans, it is roughly the size of an almond.

The hypothalamus is responsible for certain metabolic processes and other activities of the autonomic nervous system. It synthesizes and secretes certain neurohormones, often called hypothalamic-releasing hormones, and these in turn stimulate or inhibit the secretion of pituitary hormones.

The hypothalamus controls body temperature, hunger, thirst, fatigue, sleep, and circadian cycles.

Hypothalamus (animation, shown in red)

- Mr. Hope -

1 : 46 a.m

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