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mihalych1998 [28]
3 years ago
9

Can a theory be disproven or changed ?

Biology
1 answer:
frez [133]3 years ago
7 0
A theory remains a theory.
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Describe the neural and renal mechanisms that control blood pressure.
Andrei [34K]

Answer:

The autonomic nervous system is the main neural regulator of circulation and blood pressure in the short term and beat by beat and exerts its function through various reflexes that regulate vasomotor tone, heart rate and cardiac output. At the renal level, the renin–angiotensin–aldosterone system is possibly the most important in the maintenance of arterial homeostasis.

Explanation:

Blood pressure is regulated by a series of interrelated autonomic systems and humoral reflexes, which continually adjust the determining elements of the system (heart rate, stroke volume, total peripheral resistance and circulating volume).The effective circulating volume is controlled by a series of reflex systems, which obtain information about the perfusion pressure (baroreceptors in the carotid bulb and aortic arch), plasma osmolarity (hypothalamus) and urinary sodium (distal tubule).The kidney has its own self-regulatory mechanisms. The reduction in renal blood flow is detected at the level of the mesangial cells of the juxtaglomerular apparatus, starting the renin-angiotensin system. The increase in angiotensin II produces on the one hand local vasoconstriction, and on the other hand stimulates the production of aldosterone by the adrenal cortex with the consequent tubular reabsorption of sodium and water.Antidiuretic hormone or vasopressin (released from the hypothalamus by stimulation of arterial baroreceptors and also by stimulation of angiotensin II) also acts at the renal level, which acts as a powerful and water-saving vasoconstrictor in the distal tubule.

5 0
3 years ago
C or d? I need help please
g100num [7]
Most definitely c choose c actually no
7 0
3 years ago
Planets are classified in yhe domain _____<br>A. archaea<br>B. bacteria <br>C. eukarya​
Gelneren [198K]

Archaea means ancient, bacteria are, well, minuscule organisms that live everywhere, and eukarya are organisms with cells that have a nucleus as well as membrane-bound organelles... my best guess if it is planets you mean, then the answer would be archaea, if it is plants, like flowers or such, then it is eukarya.

I hope this helps!

3 0
3 years ago
Read 2 more answers
If there are 32 sister chromatids in a normal somatic cell, what is the haploid number for that cell?
malfutka [58]

Answer:

The answer is 16.

Explanation:

Somatic cells include all the cells in the body except for the reproductive cells. Haploid cells are used to represent the reproductive cells which have half the chromosome as the somatic cells. So if there are 32 sister chromatids in a somatic cell, which means there are 16 chromosomes, then the haploid number for it is 16 chromatids. I hope this answer helps.

5 0
3 years ago
According to the cell theory, which describes cells?
zysi [14]

Answer: D. All living cells come from other living cells.

Explanation:

A is incorrect because organisms like bacteria and amoebas are unicellular, or have 1 cell.

B is incorrect because cells are specialized: nerve cells and muscle cells do not share the same function.

C is incorrect because inanimate objects are not alive and do not have cells.

D is correct because cells reproduce by mitosis, creating copies of themselves.

8 0
2 years ago
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