Are Apocrine Glands? Apocrine glands are located in the skin‚ breasts‚ eyelids‚ and ears. They are a type of exocrine gland‚ which are glands that secrete hormones into a duct. Counterparts of exocrine glands are endocrine glands that secrete their hormones directly into the bloodstream. Certain endocrine glands also release hormones called pancrines that affect only specifically targeted cells very close to where they are released. Examples of endocrine glands are the pituitary gland‚ pancreas‚
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| gland that secretes through a duct: a gland that releases a secretion through a duct to the surface of an organ‚ e.g. the sweat and salivary glands | Microsoft® Encarta® 2006. © 1993-2005 Microsoft Corporation. All rights reserved. * As part of the Endocrine System The pancreas is positioned in the upper abdomen‚ just under the stomach. The major part of the pancreas‚ called the exocrine pancreas‚ functions as an exocrine gland‚ secreting digestive enzymes into the gastrointestinal tract
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------------------------------------------------- Pituitary gland From Wikipedia‚ the free encyclopedia Pituitary gland | | Located at the base of the brain‚ the pituitary gland is protected by a bony structure called the sella turcica of the sphenoid bone. | | Median sagittal through the hypophysis of an adult monkey. Semidiagrammatic. | Latin | hypophysis‚ glandula pituitaria | Gray ’s | subject #275 1275 | Artery | superior hypophyseal artery‚infundibular artery‚prechiasmal artery‚ inferior
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The Harmful Effects of Fluoride on Human Health Removing fluoride from consumer products benefits human health‚ prevent low IQ’s‚ and rids the notion that it helps cavities. Fluoride is a compound that brings together the element fluorine with another substance‚ generally a metal (“Water”1). Once in the body‚ fluoride is absorbed into the blood through the digestive tract. They collect in areas high in calcium‚ such as bones and teeth (“Water”1). Over the years‚ since inception‚ many people have
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What to know about the Pituitary Gland Anatomy & Physiology II BIO144-1003B-06 It is interesting to find out about the pituitary glands in more detail. The pituitary glands are just one major part of the endocrine system. The pituitary glands secrete hormones to the bloodstream. It has two different categories‚ such as the anterior lobe and the posterior lobe. The anterior lobe secretes different hormones that are important to the human everyday life. Prolatin‚ growth hormone‚ adrenocorticotropic
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Circadian rhythm Although most people tend to think that manifestations of body function such as temperature and blood pressure are constant throughout the day‚ the fact is that many functions change in cyclic patterns – especially those that are affected by hormones‚ such as cortisol. These daily fluctuations‚ or circadian rhythms are fundamental to all organisms‚ from bacteria to humans. Circadian rhythms help coordinate and synchronize our internal body functions‚ as well as our interactions
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TITLE PINEAL GLAND: “THE HIDDEN EYE” INTRODUCTION The third eye‚ also referred as parietal eye or pineal eye‚ is a photosensory organ that triggers hormone production and thermoregulation. This eye cannot see in quite the same way as the main eyes‚ instead only detecting shapes and shadows rather than full pictures. They are also highly sensitive to changes in light and dark – producing markedly different hormones based on time of day. It produces melatonin‚ a hormone that affects the modulation
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pacemaker working as an internal body clock such as the SCN. The SCN is in the hypothalamus and will receive signals from the retina on the light levels‚ as the light levels increase the SCN will send out signals which will travel to the pineal gland‚ the pineal gland responds by switching off production of melatonin but when it is dark the bodies level of melatonin increases making the person feel drowsy because melatonin stimulates the raphe nucleus which produces serotonin which causes sleep. Siffre
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Pituitary Gland (Hypophysis) About the size and shape of a pea‚ located in the sella turcica of the sphenoid bone‚ attached to the hypothalamus via a stalk called the infundibulum. It has two major lobes‚ one neural and one glandular. Posterior Lobe (Neurohypophysis) – composed of nervous tissue; releases neurohormones that it receives ready-made from the hypothalamus; oxytocin and anti-diuretic hormone (ADH); released on demand in response to nerve impulses from hypothalamic neurons. Anterior
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each of these is divided into a ventral and dorsal SCN. Albus found that the ventral SCN is relatively quickly reset by external cues‚ but the dorsal SCN is much less affected by light and more resistant to being reset. SCN sends signals to the pineal gland making it produce melatonin at night‚ melatonin creates sleep because it inhibits the brain mechanisms that promote wakefulness. 2. Describe in detail exogenous zeitgebers- resetting the biological clock (entrainment). Light resets the SCN‚
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