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[2] [3] The word "ruminant" comes from the Latin ruminare, which means "to chew over again". The roughly 200 species of ruminants include both domestic and wild species. [ 4 ] Ruminating mammals include cattle , all domesticated and wild bovines , goats , sheep , giraffes , deer , gazelles , and antelopes . [ 5 ]
Several hormones affect sexual arousal, including testosterone, cortisol, and estradiol. However, the specific roles of these hormones are not clear. [66] Testosterone is the most commonly studied hormone involved with sexuality. It plays a key role in sexual arousal in males, with strong effects on central arousal mechanisms. [66]
Rumination may refer to: Rumination, the digestive process of ruminants. Rumination syndrome, a chronic condition characterized by effortless regurgitation of most meals following consumption; Deep thought or consideration Rumination (psychology), contemplation or reflection, which may become persistent and recurrent worrying or brooding
Rumination, an example of attentional deployment, [20] is defined as the passive and repetitive focusing of one's attention on one's symptoms of distress and the causes and consequences of these symptoms. Rumination is generally considered a maladaptive emotion regulation strategy, as it tends to exacerbate emotional distress.
Rumination appears closely related to worry. Rumination is the focused attention on the symptoms of one's mental distress. In 1998, Nolen-Hoeksema proposed the Response Styles Theory, [1] [2] which is the most widely used conceptualization model of rumination. However, other theories have proposed different definitions for rumination.
Hormones can be amino acid complexes, steroids, eicosanoids, leukotrienes, or prostaglandins. [3] The endocrine system is contrasted both to exocrine glands, which secrete hormones to the outside of the body, and to the system known as paracrine signalling between cells over a relatively short distance.
Releasing hormones and inhibiting hormones are hormones whose main purpose is to control the release of other hormones, either by stimulating or inhibiting their release. They are also called liberins ( / ˈ l ɪ b ə r ɪ n z / ) and statins ( / ˈ s t æ t ɪ n z / ) (respectively), or releasing factors and inhibiting factors .
A neurohormone is any hormone produced and released by neuroendocrine cells (also called neurosecretory cells) into the blood. [1] [2] By definition of being hormones, they are secreted into the circulation for systemic effect, but they can also have a role of neurotransmitter or other roles such as autocrine (self) or paracrine (local) messenger.