what is the difference b/w pitutary gland and pineal gland?

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Actually i want the proper differences b/w them, in terms of thier working.


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Alicia

The Pineal Gland
This gland secretes the hormone melatonin, which helps regulate our circadian rhythms (like the sleep-wake cycle).
Pituitary Gland
This important endocrine organ, about the size of a pea, secretes at least nine major hormones.
Growth Hormone (GH ), which stimulates overall body growth by signaling cells to increase production of proteins and growth in epiphyseal (growth) plates in bones. GH supplements are sometimes taken by athletes, like body builders, in an effort to increase body mass; which it does, but with uncontrolled (unpredictable?) results. Acromegaly, a condition of abnormal growth (e.g., very large jaw, nose, and/or hands) may be produced. This condition can also happen as a result of pituitary disorders.
Prolactin (PRL), which causes milk production in breasts.
Thyroid-stimulating hormone (TSH ), which jump-starts the thyroid gland into producing thyroid hormone.
ACTH (you don’t what to know what that stands for), which causes release of glucorticoids from the adrenal cortex.
MSH (same as above – you don’t want to know), which seems to darken skin by stimulating melanocytes (see Issue 3, of the March 1996 Newsletter), in the epidermal skin layer.
Follicle-stimulating hormone (FSH ), which is involved in the maturing of sex cells, and their secretion.
LH does more of the same as in item number 6.
In females, FSH and LH stimulate maturation of ovarion follicles, and secretion of estrogen and progesterone. Also, during menstruation, a large amount of LH is released to induce ovulation. In males, LH signals the secretion of androgens – mainly testosterone – and FSH stimulates maturation of sperm cells and secretion of sex hormones.
The antidiuretic (ADH ) helps to inhibit urination during dehydration in an attempt to lessen its effects.
Oxytocin helps contract the uterus to discharge the baby during childbirth, and to express milk during breast feeding.

J1

Well that’s actually a loaded question and could take up a lottttt of space. Since I’m not sure which level of difference you are looking for, I’ll tell you what I remember: the pineal gland releases melatonin at night and controls release of serotonin during the day. The pituitary gland has 2 subparts: anterior pituitary and posterior pituitary gland. It is involved in the Hypothalamo-Pituitary Axis. All this means is that the hypothalamus releases hormones which will activate the pituitary gland which will in turn stimulate a target cell/tissue/organ. For example, in the HPA axis (the hypothalamo-pituitary adrenal axis):
CRH (Corticotropic Releasing Hormone) from the hypothalamus acts on the the anterior pituitary to release ACTH, which will then act on the adrenal cortex to release cortisol. So that’s what happens when you are stressed. It takes about 2 minutes from the axis to work. That’s just an example…there are TONS of different, but similar examples.
I should also mention that the posterior pituitary releases only a couple of hormones: Vasopressin is one of those, and oxytocin is the other. The anterior pituitary handles most other pituitary hormones. The pituitary gland is EXTREMELY IMPORTANT–it regulates most other hormones (though NOT the pineal gland’s hormones directly).
The pineal’s hormone release is signaled by Zeitgebers …which is just a fancy way of saying light. Time of day determines which hormone (serotonin or melatonin) is released. These hormones generally control wakefulness (sleep cycle) and mood in some critters.
Both are fascinating little glands…especially the pituitary which controls just about everything. I’m sorry if this is too “molecular” and not what you were looking for…this is basically all I do. Fun stuff.
Edit: What the person said above me is correct. Those are the hormones of the P. Pituitary and Anterior Pituitary…and the pineal. If you need more information about what those act on (what cells, etc), let me know.
**The Master Clock/oscillator of the sleep cycle in humans is actually the SCN, not the pineal gland. The pineal IS the master clock in birds. In humans, light information is processed in the SCN (suprachiasmatic nucleus), which will the signal release of melatonin in the pineal.

Mike J

Pituitary Glad is call the Master Gland because it regulates all of the hormonal glands, including the pineal gland.
The pineal gland is a receptor of light, where it contorols the circadian rhythms or sleep wake cycle through production of melatonin. Malfunction of the pineal gland, or poor health habits related to sleep, can lead to disorders such as seasonal affective disorder. Many Americans have developed this disorder over the last century because we spend too much time indoors.

Anonymous girl

The pineal gland is what produces melatonin. That is what helps regulate the sleep cycle. It has some effect on sexual development, and hibernation in other mammals.
The pituitary is the master gland of the body, and is related to growth, among a number of other things. It “communicates” hormonally with the hypothalamus which releases hormones to control other glands.
The pituitary gland helps control the following body processes:
Growth
Blood pressure
Some aspects of pregnancy and childbirth
Breast milk production
Sex organ functions in both women and men
Thyroid gland function
The conversion of food into energy (metabolism)
Water and osmolarity regulation in the body.

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