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3 years ago

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What part of the ear allows air to enter to help equalize pressure on both sides of the tympanic membrane? Eustachian tube Ossic

les Auditory canal Semicircular canals

1 answer:

Archy [21]3 years ago

3 0

Auditory because idk hope u find the answer

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Which is true of the amount of matter in ecosystems?

inessss [21]

Answer:

I think its c Scientists cannot determine how it changes.

d). It increases over time.

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2 years ago

Airway management can be challenging in patients with down syndrome because their:

elena-14-01-66 [18.8K]

Because their TEETH ARE MISALIGNED AND THEY USUALLY POSSESS LONG TONGUE. Respiratory illness is common in people who have down syndrome and their unique airway anatomical factors makes airway management difficult during respiratory distress. For instance, they have narrower upper airway and smaller trachea.

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3 years ago

Recovering the Romanovs <- your second lab link On the lab page, please navigate using the top and bottom modules. For exampl

77julia77 [94]

Answer:

Explanation:

Who were the Romanovs?The Romanovs were high ranking aristocrats in Russia during the sixteenth and seventeenth centuries,The Romanov was the second dynasty to rule Russia, and also the last ruling Russia from 1613 until the Russian Revolution of 1917

2. Who was Anna Anderson?An impostor who claimed to be Grand Duchess Anastasia of Russia

Who did she claim to be? Anna Anderson had claimed to be the missing be the Grand Duchess Anastasia Nikolaevna of Russia(Anastasia Romanov)

What evidence supported this claim? the evidence that supported her claim was that she had the same hair and eye color,the same height, distinctive body markings, and a deformed foot just as the Romanov princess had.

3. What did scientists find in the burial site? The scientist found nine skeletons.

What did they not find?They did not find two of them which was believe to be that of Princess Anastasia and her brother Prince Alexei

4. What did the mitochondrial DNA testing show? DNA testing showed that it certainly was Nicholas, Alexandra and the three children, these was discovered through the bones found in the grave

What do scientists believe happened to Anastasia?Scientist believed that Princess Anastasia along with her brother Prince Alexei were cremated aright after they were being killed

5. Why do you think it took so long for this mystery to be solved? it took so long for this mystery to be solved because the technology available can not be compare to DNA technology because modern technology and advancement had made it more better and convenient .

What factors played a role? DNA technology played a role

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2 years ago

write a 5-7 sentence paragraph explaining what happens to co2 levels in the world over the course of the year. add as much conte

Hunter-Best [27]

Answer:

The amount of CO2 found in the atmosphere varies over the course of a year. Much of this variation happens because of the role of plants in the carbon cycle. Respiration happens all the time, but dominates during the colder months of the year, resulting in higher CO2 levels in the atmosphere during those months.

Explanation:

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2 years ago

What would be the best explanation for why myelinated fibers conduct signals faster than unmyelinated fibers?

Sliva [168]

Answer: The diffusion of ions along the axoplasm is faster,in myelinated compare to unmyelinated,

Neurons are the structural and functioning units of nervous system.They are the vehicles for transmission of impulses as electrical signals from one part of the cells,and from one part of the body to another.

The basic structural components of a typical neuron are the cellbody, the axon, and the dendrites.

Based on structure neurons are classified as myelinated and unmyelinated.This is based on the the surrounding layer of myelin sheath around the axon. The myelin provides the insulating layer for the axon.And ensures fast movement of impluses.

In myelinated neurons the myelin sheath are interrupted at intervals by gaps along the length of the axon called Nodes of Ranvier. These gaps contains more Na-K channels for influx and out-flux of K and Na+ ions for transmission of impulses.

The cytoplasm of axon is called axoplasm,Since this is surrounded by myelin sheath which contains Na-K+ channels,The rate of diffusion of ions along these channels is faster for depolarization to take place than in unmyelinated neurons. Inaddtion as these ions diffusion increases,its jump faster at the nodes of Ranvier (saltatory conduction) to the next axoplasm which further speed up the rate of transmission.

Unmyeinated lacks myelin sheath,therefore the exchange and the rate of diffusion of ions along the axons is low.

Explnation:

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2 years ago