Which hormone’s secretion is controlled by a positive feedback mechanism quizlet?

Example: In labor, muscle contractions that push the baby through the birth canal become stronger and stronger by means of a positive feedback mechanism that regulates secretion of the hormone oxytocin.

Which hormone’s secretion is controlled by a positive feedback mechanism?

Oxytocin is one of the few hormones regulated by a positive feedback mechanism. In both childbirth and breastfeeding, oxytocin is released and causes additional release of oxytocin. During childbirth, release of oxytocin results in uterine contractions, and uterine contractions cause additional oxytocin to be released.

Which of the following hormones is secreted in response to a positive feedback loop?

Correct answer:

The oxytocin pathway is an example of a positive feedback mechanism. Unlike negative feedback, which counteracts a stimulation, positive feedback reinforces a stimulus, leading to an even greater response. One key function of oxytocin in mammals is to regulate the release of milk during nursing.

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How is the hypothalamus regulated by feedback loops quizlet?

The hypothalamus secretes a releasing hormone,which then stimulates the anterior pituitary gland to secrete ACTH. Through negative feedback control,the cortisol inhibits the further secretion of ACTH.

What is the role of negative feedback in control of hormone secretions quizlet?

In negative feedback, as the secretion of the hormone increases there is a feedback that acts to reduce secretion. How can hormones affect other hormones? -They can inhibit or stimulate their release. insulin and glucagon have opposite effects on blood glucose levels.

Is growth hormone positive or negative feedback?

Growth hormone secretion is also part of a negative feedback loop involving IGF-I. High blood levels of IGF-I lead to decreased secretion of growth hormone not only by directly suppressing the somatotroph, but by stimulating release of somatostatin from the hypothalamus.

Which body process is controlled using a positive feedback loop?

In a positive feedback loop, feedback serves to intensify a response until an endpoint is reached. Examples of processes controlled by positive feedback in the human body include blood clotting and childbirth.

What are two positive feedback examples?

Some examples of positive feedback are contractions in child birth and the ripening of fruit; negative feedback examples include the regulation of blood glucose levels and osmoregulation.

What is the role of hormones in feedback loops?

Most hormones are controlled by negative feedback, in which the hormone feeds back to decrease its own production. This type of feedback brings things back to normal whenever they start to become too extreme. Positive feedback is much less common because it causes conditions to become increasingly extreme.

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What is positive feedback mechanisms?

Positive feedback mechanisms control self-perpetuating events that can be out of control and do not require continuous adjustment. In positive feedback mechanisms, the original stimulus is promoted rather than negated. Positive feedback increases the deviation from an ideal normal value.

What gland is responsive to the effects of hypothalamic releasing hormones?

For each system, the hypothalamus secretes releasing hormones (i.e., CRH, GnRH, and TRH) that act on the pituitary gland. In response to those stimuli, the pituitary gland releases ACTH, gonadotropins (i.e., LH and FSH), or TSH. ACTH activates the adrenal glands to release cortisol, which induces metabolic effects.

Which feedback triggers the production of hormones?

Hormone production and release are primarily controlled by negative feedback. In negative feedback systems, a stimulus causes the release of a substance whose effects then inhibit further release. In this way, the concentration of hormones in blood is maintained within a narrow range.

How does the negative feedback loop control thyroid levels?

The thyroid gland is part of the hypothalamic-pituitary-thyroid axis, and control of thyroid hormone secretion is exerted by classical negative feedback, as depicted in the diagram. Thyroid-releasing hormone (TRH) from the hypothalamus stimulates TSH from the pituitary, which stimulates thyroid hormone release.

How does negative feedback affect the body’s hormones?

Hormone production and release are primarily controlled by negative feedback. In negative feedback systems, a stimulus causes the release of a substance whose effects then inhibit further release. In this way, the concentration of hormones in blood is maintained within a narrow range.

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How are hormones most frequently controlled quizlet?

What is the most common mechanism used to regulate hormone secretion? Negative feedback is the main method used to regulate the secretion of hormones. You just studied 21 terms!

Which hormones should the doctor prescribe to Tim?

Which hormones should the doctor prescribe to Tim? The doctor needs to prescribe him ACTH, TSH, and testosterone.

Lots of iodine