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kap26 [50]
3 years ago
12

Help me woth these two ill give free BRAINLESS ​

Biology
2 answers:
Ghella [55]3 years ago
6 0

Answer:

16. skin & heart

17. kidney to the bladder

if 16 isn't multiple choice I'd say skin

tell me if it's right

Law Incorporation [45]3 years ago
4 0

Answer:

for 16 it is heart.

Explanation:

for 17 it is kidney to bladder

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In humans, the quadriceps muscle is a skeletal leg muscle under voluntary control. As such, it contracts in response to signals
Masja [62]

Answer:

The correct answer is - operation of reflex arc.

Explanation:

The reflex arc is a unique and special type of neural pathway that starts with a sensory neuron and ends with a motor neuron. In this operation sensory neuron acts as the receptor and motor neuron is effector. This type of neural circuit helps in faster response.

Voluntary muscles like quadriceps muscle are normally in control voluntarily however, such muscle may contract involuntary due to reflex arc. This type of contraction takes place before the signal has even reached the brain.

In this response the sensory neuron takes the signal to the spinal cord and then motor neuron to the effector muscle for faster response.

Thus, the correct answer is - operation of reflex arc.

8 0
3 years ago
What does the respiratory system eliminate when there is an excess of hydrogen ions in the body?
qwelly [4]

Answer:by breaking down carbonic acid into carbon dioxide and water.

The carbon dioxide is expelled from the body

Explanation:the body is able to maintain a constant internal environment through hoemostatis.one of such control is the acid-base balance in the body.

It does this by regulating the amount of hydrogen ions in the blood.A low pH indicates an acidic condition and a high pH indicates an alkaline condition.

The human blood has a pH of 7.35---7.45.it is slightly alkaline and needs to keep this range constant.

The lungs and kidneys involved in regulating the body pH.

When there is excess hydrogen ion in the blood, bicarbonate ions combine with the hydrogen ions to form carbonic acid . this carbonic acid breaks down into water and CO2 .the co2 is expelled from lungs through gaseous exchange.

When the accumulation of acid in the blood is high,the pH drops below 7.35 and this is called respiratory acidosis.

When there is excess alkaline in the blood,the pH goes beyond 7.45 and this is called respiratory alkalosis.

8 0
3 years ago
How does the current, or sixth, mass extinction differ from the past five mass extinction events?
svp [43]
B. I think but I am not sure
8 0
3 years ago
Read 2 more answers
You are a scientist researching West Nile virus, a mosquito-borne pathogen. You note that a number of cases of West Nile disease
icang [17]

       First of all, let's think about the scientific method, and its processes of how it works.

       It all starts with observation, so we need to check all the data we have and all the information that can be collected to have a good thought on what's going on.

        After gathering enough information, let's think about a hypothesis that could help solving this problem. Well, reading the question, we can check that that region passed through the wettest summer in 100 years, and that's the main problem here, because before this weather, was this disease a problem? I guess not, so this can be a reason, the change in the percentage of water in the air.

         With that said, we need to test if this is true or not, and for that, we'll need mosquitoes with the West Nile virus, and we'll put them in different environments, one that it's wet, and another one that it's not that wet, just like the West Nile problem. This way we can check if this is the problem or not, if it's affecting their reproduction and etc.

5 0
4 years ago
Select all of the answers that apply. If global warming were to raise temperatures 1.5°C to 4.5°C, what would most-likely happen
mr_godi [17]
According to some scientists, if the earthy was to heat up that much then the polor ice caps would melt more and the sea level would rise potentially causing some areas of land to flood. 
6 0
4 years ago
Read 2 more answers
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