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4 years ago

How do the thyroid and parathyroid from a feedback loop?

Biology

1 answer:

shtirl [24]4 years ago

6 0

Explanation:

When calcium levels in the blood become too low, parathyroid hormone leads to an increase in calcium by degrading bone. In response, calcitonin from the thyroid is released when the levels are high again, to decrease calcium levels in the blood.

Further Explanation:

During homeostasis the body maintains a constant internal balance in pH, temperature, blood pressure etc. Cells in a multicellular organism become specialized for particular tasks and communicate with one another in order to maintain homeostasis. Within the human body these are known as hormone cascades, where several complex steps occur- the tissues signal to one another with the use of hormones released by the endocrine system. The regulation (increase and decrease) of these secretions is achieved by negative feedback loops, where the release of certain substances during a cascade in turn halts the secretion of hormones at earlier stages.

In the body calcium homeostasis, which is generally defined as the maintenance of specific internal conditions, is mediated by the endocrine system through hormonal control. This regulates the calcium flux between the bloodstream and the bone; and the hormones responsible, change the ratio of osteoclast activity to osteoblast activity -osteoblasts build bone while osteoclasts breakdown or degrade bone.

Hormones responsible include calcitonin (from special parafollicular cells in the thyroid gland), calcitriol (activated vitamin D) and the parathyroid hormone (from the parathyroid glands). These affect the absorption of calcium from the gut, or kidney reabsorption; both parathyroid hormone and calcitriol act by causing the increase of calcium ions into the bloodstream as the bone is degraded by osteoclasts.

Learn more about tissue types at brainly.com/question/8487952

Learn more about homeostasis at brainly.com/question/1601808

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What is the entropyof isolate system

Tanzania [10]

Answer:

Entropy of an isolated system either increases or remains constant. If there are no irreversibilities in an isolated system then its entropy will remain constant. But that is a hypothetical case. In real life case, there is always some irreversibility present in the system.

Explanation:

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3 years ago

Match each description with the appropriate term:

Eddi Din [679]

Answer:

a-C b-A c-E d-D e-B

Explanation:

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The epidermis is the external layer of the skin. This is where all bacterial microflora lives.

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Baking Soda is basic.

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This technic is used to prevent contamination between samples.

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4 years ago

24 Notocords is restricted to tregon a) Hemichordates c) Cephalochordates d)ALL Chordates

victus00 [196]

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Also idk what “Tregon” so hopefully that didn’t stray from my answer being right

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4 years ago

What two compounds are the waste products of cellular respiration? * H2O and CO2 H2O and C6H12O6 CO2 and C6H12O6 ATP and CO2

rusak2 [61]

Answer:

The two compounds that correspond to waste products of cellular respiration are H₂O and CO₂.

Explanation:

The cellular metabolic waste products, specifically from cellular respiration are water (H₂O) and carbon dioxide (CO₂), from the oxidation of glucose into energy.

The process of cellular respiration occurs in the mitochondria of eukaryotic cells and consists of a series of chemical reactions where, from a glucose molecule, energy is obtained in the form of ATP molecules.

Obtaining H₂O and CO₂ from glucose can be summarized with the schematic reaction:

C₆H₁₂O₆ + 6O₂ → 6H₂O + 6CO₂

This summary indicates that a glucose molecule, when oxidized, produces as waste 6 molecules of water and 6 molecules of carbon dioxide. To reach this process all the reactions of the oxidative phosphorylation occur and 24 molecules of ATP are obtained for each molecule of glucose.

For the other options it is important to mention that:

C₆H₁₂O₆ is the substrate from which cellular respiration takes place.
ATP is the final product of cellular respiration, translated into energy to be used by the cell.

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3 years ago

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3 years ago