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3 years ago

Name a hormone secreted by the thyroid gland that acts to lower blood calcium

Biology

1 answer:

Sergio [31]3 years ago

4 0

Answer:

Thyrocalcitonin or TCT

Explanation:

Thyrocalcitonin or TCT is a non-iodinated calcium lowering hormone. It is originating from the parafollicular cells or C cells (C for calcium).

The thyroid gland consists of follicles of cuboidal epithelial cells. These cuboidal cells have a nucleus at the base. These are principal cells responsible for the synthesis of thyroid hormones.

In between these follicular cells, other high cuboidal cells are present, known as parafollicular cells / C cells. These cells synthesise the hormone TCT. When there is high levels of calcium ions in the serum, TCT will release. This lowers the high level of calcium ions in the blood and plasma to normal level. This is done due to the deposition of calcium in the bone.

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Luden [163]

Answer:

biological macro-molecules

Explanation:

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4 years ago

The ph of the water in several lakes in norway and sweden had decreased to below 5.0 due to an increase in acid rain. What is mo

arsen [322]

Answer:

What will most likely happen in these lakes is that there will be a decline of several fish populations. The correct answer is A.

Explanation:

The options attached to the question are given below:

A. The decline of several fish populations

B. An increase in the number of fish.

C. An increase in the number of primary producers.

D. Increased predator- prey relationship.

The fishes, just like any other living organisms has ideal body temperature and pH at which they act best. The ideal pH for fish living in lake water is between 6 and 8. If the pH is reduced below this value then the water will become acidic and this will be toxic for the fish population living in the lakes. Therefore, those fish that can not cope will die and there will be a decrease in the fish populations.

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3 years ago

Genetics is the most important factor that affects your physical fitness.<br> a. True<br> b. False

faltersainse [42]

<span>This is false. Everyone is unique in this aspect and although genetics can help you, or make life harder, it also falls down to personal behavior and habits. There are no genetics that can save you from constant overeating and there are no genetics that can prevent you from working out, at least to your possible extent.</span>

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3 years ago

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Which of the following is a type of wave that does not need a medium though which to travel?

LenaWriter [7]

Answer:

The answer is D) Transverse

Explanation:

Electromagnetic waves which are in transverse (by nature) can travel withought a medium.

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3 years ago

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What is an example of why the process of photosynthesis is important to life on earth

ruslelena [56]

Explanation:

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Carbohydrates molecules that supply energy and provide support; they consist of mainly sugars or starches in long chains and rings to form monosaccharide monomers. Inclusive of monosaccharides, disaccharides and polysaccharides (which describes the type of bonding and the degree of complexity of the polymers), their basic makeup comprises C, H, O -with many polar OH groups.

The energy they store, is required by all living organisms for biological processes; these undergo respiration, in order to release energy stored within its bonds, in the form of the molecule ATP.