Hemoglobin transports oxygen from the lungs to other parts of the body, including the brain. After oxygen has been absorbed into the blood and bound to hemoglobin, the circulatory system delivers this oxygen-rich blood to the brain.
These four major arteriesthe two internal carotids and the two vertebralsdeliver oxygenated blood to the entire brain mass. The vertebral arteries ultimately join to form the basilar artery, creating a dual-source system that ensures continuous perfusion to the base of the skull.
The vascular system brings glucose and oxygen to the brain, which are its principal sources of energy. Techniques like Positron Emission Tomography (PET) and functional Magnetic Resonance Imaging (fMRI) depend upon the fact that blood flow and energy delivery changes with regional brain activity.
Such details provide a deeper understanding and appreciation for Delivering Oxygen To The Brain.
The brain is a metabolically expensive organ which requires a continuous supply of oxygen and glucoseloss of blood flow to the brain can result in permanent damage, coma, or death in a matter of minutes.
The human brain, despite making up only about 2% of body weight, demands nearly 15% of the bodys total blood supply. This relentless need for oxygen (O2) and nutrients is met through cerebral blood flow (CBF).
