<span>The answer to this question would be: keep blood moving forward through the heart
When the ventricle contracts, the valve will plug the hole to atrium so the blood will be pump to the body. The valve in heart will prevent backflow of blood from ventricle to atrium which makes the blood keep moving forward.
A defect in valve could reduce heart deficiency as a part of the blood might be going back to the atrium, called regurgitation.</span>
Answer:
A microscope!
Explanation:
A microscope is used to magnify objects that are too small to be seen by the human eye. I hope this helps! :)
The association areas are the parts of the brain responsible for piecing together sensory input to form meaningful perceptions of the world.
The cerebral cortex is divided into sensory, motor and association areas. Sensory areas receive sensory input, motor areas control movement of muscles. Association areas are involved with more complex functions such as learning, decision making and complex movements such as writing.
<span>The tissues are not a part of the adaptive immune system, but rather the innate immune system. This part of the body adapts to specific antigens and is made of highly specialized cells. The tissues are not specifically adapted to any particular antigens, so they become activated by the antigen's chemical properties.</span>
Answer:
Here you go bud A functional adaption is an adaption that helps an organism survive. So, the color and shape of a flounder allows it to camouflage itself among the sea floor to hide itself from predators. Flounders ability to camouflage protects them, so they can survive Hope this helps good luck