All categories

4 years ago

Choose all the answers that apply. The nervous system _____.

Biology

2 answers:

Karolina [17]4 years ago

4 0

Answer:

The nervous system is present only in animals.

The nervous system also interacts with other systems.

It also controls body functions(the central nervous system does).

Artist 52 [7]4 years ago

3 0

Answer:

B controls body functions,

C is only found in animals

E interacts with all other systems

Explanation:

The nervous system is a network that sends messages in both directions between the brain and different parts of the body. It does this through the spinal cord, which runs down the back from the brain. It contains nerves inside, some filaments that branch off to the other organs and parts of the body.

The nervous system is a complex set of cells in charge of directing, supervising and controlling all the functions and activities of the body's organs.

Much of living beings, as well as humans, have nervous systems. However, there are organisms that do not have it, such as protozoa and porifers.

You might be interested in

What type of mixture is maple syrup

Alexandra [31]

Maple Syrup Is A Solution.

6 0

4 years ago

I WILL GIVE BRAINLIEST

Oduvanchick [21]

Carbon dioxide can be transported through the blood via three methods. It is dissolved directly in the blood, bound to plasma proteins or hemoglobin, or converted into bicarbonate.

The majority of carbon dioxide is transported as part of the bicarbonate system. Carbon dioxide diffuses into red blood cells. Inside, carbonic anhydrase converts carbon dioxide into carbonic acid (H2CO3), which is subsequently hydrolyzed into bicarbonate (HCO3−) and H+. The H+ ion binds to hemoglobin in red blood cells, and bicarbonate is transported out of the red blood cells in exchange for a chloride ion. This is called the chloride shift.

Bicarbonate leaves the red blood cells and enters the blood plasma. In the lungs, bicarbonate is transported back into the red blood cells in exchange for chloride. The H+ dissociates from hemoglobin and combines with bicarbonate to form carbonic acid with the help of carbonic anhydrase, which further catalyzes the reaction to convert carbonic acid back into carbon dioxide and water. The carbon dioxide is then expelled from the lungs.

6 0

3 years ago

Pulmonary arteries transport ________.

andrezito [222]

Answer:

Explanation:

I would say this because the pulmonary circulation only transports deoxygenated blood. And this blood gets transported to the lungs so the lungs can absorb oxygen and release carbon dioxide. I am not sure about this one though. This is what I think.

3 0

3 years ago

During drought years, seeds with thin coats are more likely to desiccate (dry out) and not be able to germinate

Morgarella [4.7K]

Directional selection favors one of the extreme phenotypes. Option B). Fewer plants with thin seed coats will be able to germinate, leading to a higher proportion of plants that produce seeds with thick seed coats.

<h3>What is directional selection?</h3>

Directional selection increases in the proportion of individuals with an extreme phenotypic trait.

There must be a selective pressure or environmental pressure acting on populations to lead the species to increase the number of individuals expressing that extreme phenotype.

This selection presents more frequently in those cases in which interactions between living organisms and the environment modify in the same direction.

In the exposed example the environmental pressure is drought during several years.

Drought periods decreases the fitness of plants that produce thin seed coats because they dehydrate before germinating.

Originally the population expressed both types of seeds. But after the drought pressure, only plants that produce seeds with thicker coats got to survive and reproduce.

The correct option is B). Fewer plants with thin seed coats will be able to germinate, leading to a higher proportion of plants that produce seeds with thick seed coats.

You can learn more acout directional selection at

brainly.com/question/12226774

#SPJ1

5 0

2 years ago

2. Beginning with the superior vena cava, trace the path followed by a red blood cell as it passes into and through the heart, t

Katen [24]

Answer:

BLOOD PATHWAY:

Body > superior and inferior vena cava > right atrium > tricuspid valve > right ventricle > pulmonary semilunar valve > pulmonary artery > lungs > pulmonary vien > left ventricle > bicuspid/mitral valve> left ventricle > Aortic semilunar valve > Aorta > Body

The pathway goes like this:

From the body (we don't say first because this is a cycle), unoxygenated blood collected goes to the heart via the INFERIOR and SUPERIOR VENA CAVA then it empties into the RIGHT ATRIUM from there it passess through a valve called TRICUSPID valve, which prevents backflow of blood to the right atrium. The blood goes to our first pumping chamber, RIGHT VENTRICLE. The right ventricle pumps the blood through the PULMONARY SEMILUNAR VALVE which leads to the PULMONARY ARTERIES, which happens to be the only arteries that carry unoxygenated blood. From there it goes to the lungs to pick up oxygen and rid itself of carbon dioxide. The blood then goes back into the heart via the PULMONARY VEINS and like the latter, they are the only veins that carry oxygenated blood.

The blood then goes back into the heart, emptying into the LEFT ATRIUM. From there it goes through the BICUSPID VALVE or MITRAL VALVE and to the last and thickest pumping chamber, the LEFT VENTRICLE. The left ventricle pumps the blood through the AORTIC SEMILUNAR VALVE which opens out to the AORTA.

And at last, it goes back to your body.

6 0

3 years ago