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Alex Ar [27]
2 years ago
6

[40 POINTS!!!!]

Biology
2 answers:
ipn [44]2 years ago
6 0

Answer:

A. It will lower blood pressure because less blood is pumped per beat.

Explanation:

I thought B might be a potential answer, but since the atria are not filling properly and heart rate is increased, it would make sense that blood pressure drops (effect of faster heart contraction is negated by the drop in blood volume in the atria).

Greeley [361]2 years ago
5 0
The answer is B. It will increase blood pressure because the heart is contracting faster
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C cells of the thyroid gland secrete __________. C cells of the thyroid gland secrete __________. tetraiodothyronine cortisol ca
Leni [432]

C cells of the thyroid gland secrete calcitonin.

<h3>What does C cells of thyroid gland produce?</h3>
  • The thyroid follicle, which is the gland's active component, is encircled by a single layer of epithelial cells, and the lumen is stuffed with colloidal material.
  • It includes parafollicular cells, or C cells, which release calcitonin.
  • The C-cells of the thyroid gland secrete calcitonin, a 32 amino acid hormone.
  • When the concentration of blood calcium has grown over the usual range, the thyroid gland releases the hormone calcitonin, which lowers the level.
  • The parafollicular cells, sometimes referred to as the C cells, of the thyroid gland are the principal producers of this polypeptide hormone, which has 32 amino acids.

Learn more about thyroid gland here:

brainly.com/question/27523862

#SPJ4

Disclaimer: The question was given incomplete on the portal. Here is the complete question.

Question: The C cells of the thyroid gland secrete

a) TSH.

b) parathormone.

c) thyroxine.

d) triiodothyronine.

e) calcitonin

6 0
1 year ago
Which characteristic help the Grants show the result of natural selection?
Talja [164]
I believe this is the answer you are looking for:

<span>C. The size and shape of their beaks</span>
4 0
2 years ago
Based on the definitions of pharmacophore and privileged structure, outline essential structural features a 1,4-dihyrdopyridine
stiv31 [10]

Answer:

Explanation:

Pharmacophore (pharmacology) - The molecular framework responsible for a drug's biological activity. According to IUPAC — A pharmacophore is the ensemble of steric and electronic features that is necessary to ensure the optimal supramolecular interactions with a specific biological target structure and to trigger (or to block) its biological response.

Privileged structures are defined as molecular frameworks which are able of providing useful ligands for more than one type of receptor or enzyme target by judicious structural modifications.

1) The 1,4-dihydropyridine ring is present in many biologically important molecules that acts as an important scaffold for cardiovascular drug - a calcium antagonists and although it is technically not considered as a pharmacophore, it is considered as a privileged structure.

1,4-Dihydropyridine (DHP), belongs to the class of calcium antagonist that inhibits the influx of extracellular Ca+2 through the L-type voltage-dependent calcium channels.

A positional substitution in the 4-position is feasible in the heterocyclic ring which in turn culminates in various calcium channel antagonist activities and this heterocyclic ring is the common feature for various pharmacological activities such as anti-inflammatory activity, analgesic activity,

antihypertensive, antianginal, antitumor, antitubercular activity and antithrombotic .

Position on the heterocyclic ring binds to the L-type channel and also to N-type channel on membranes.

2.) The bioisosteres are not a suitable bioisostere for the traditional C-4 aryl or heteroaryl substitution which is necessary for calcium ion blockage thereby inhibiting it to function with the mechanism shared above.

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When the algae in coral reefs die off due to environmental stresses, the coral subsequently dies because of lack of food. this p
jeyben [28]
<span>Coral bleaching. The name is apt, as coral affected by this process will lose their vibrant color and become white, which is the color of the calcium carbonate substrate that the coral polyps build around themselves. Coral bleaching can be reversed, but only if ideal conditions return quickly.</span>
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Vitamin b12 is essential for the proper functioning of which type of cells?
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<span>nerve cells need b 12 for proper functioning</span>
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