<span>(you already have the answer)
An elevated ridge of cerebral tissue inward folds of cerebral tissue is called a GYRUS.
Gyrus are usually surrounded by sulci( depressions).
</span>They exist because it allows the human, and other mammalian brains, to have <span>a larger surface area. Since the brain is confined to the skull and the that space is limited
this will allow more cortical surface
area, and greater cognitive function to exist. </span>
Simply use a stop watch. Begin the stop watch when the necessary elements have been added and stop it immediately as soon as it turns purple. Repeat the process a few times to make sure the timing is accurate.
A. because you can't observe an animal in its natural habitat if you take it out of its habitat or if you have a model.
In systemic circulation, a drop of blood that is rich in oxygen in the left atrium will first travel through the bicuspid valve to reach the left ventricle. From there it will be pumped through the aortic semilunar valve to reach the aorta which will branch into arterioles.
The blood exiting the capillaries is poor in oxygen and will first travel in venules, which will fuse into bigger veins. Eventually the blood will enter into the right ventricule via either superior vena cava or inferior vena cava.
<h3>What is Systemic circulation?</h3>
This involves blood vessels supplying oxygenated blood to and returning deoxygenated blood from the tissues of the body.
The appropriate processes and steps can be seen above.
Read more about Systemic circulation here brainly.com/question/11478881