Answer: C.It builds up a higher level of oxygen in the blood.
The blood – flow change is localized to within 2 or 3 mm of where the neural activity is. Usually the brought-in oxygen is more than the oxygen consumed in burning glucose (it is not yet settled whether most glucose consumption is oxidative) and this causes a net decrease in deoxygenated hemoglobin (dHb) in that brain area’s blood vessels.
The heart is a four-chambered organ consisting of right and left halves called the right heart and the left heart .The upper two chambers the left and right atria are entry points into the heart for blood – flow returning from the circulatory system while the two lower chambers the left and right ventricles perform the contractions that eject the blood from the heart to flow through the …
Cerebral circulation is the movement of blood through a network of cerebral arteries and veins supplying the brain.The rate of cerebral blood flow in an adult human is typically 750 milliliters per minute or about 15% of cardiac output. Arteries deliver oxygenated blood glucose and other nutrients to the brain. Veins carry “used or spent” blood back to the heart to remove carbon dioxide …
The heart is a muscular organ in most animals which pumps blood through the blood vessels of the circulatory system. The pumped blood carries oxygen and nutrients to the body while carrying metabolic waste such as carbon dioxide to the lungs. In humans the heart is approximately the size of a closed fist and is located between the lungs in the middle compartment of the chest.
A chemoreceptor also known as chemosensor is a specialized sensory receptor cell which transduces a chemical substance (endogenous or induced) to generate a biological signal. This signal may be in the form of an action potential if the chemoreceptor is a neuron or in the form of a neurotransmitter that can activate a nerve fiber if th…