As it gives out oxegen it looses the bright red
As it gives out oxegen it looses the bright red
Blood appears dark red as it circulates through the body primarily in the veins, where it is deoxygenated. This occurs after oxygen is delivered to the tissues and carbon dioxide is picked up, resulting in a lower oxygen content. The dark red color is due to the altered state of hemoglobin, which reflects different wavelengths of light depending on its oxygen saturation.
As it gives out oxegen it looses the bright red
The oxygen in it is replaced with carbon dioxide.
It is the same reason a person's blood turns black when it is on the outside of the body. When blood cells are exposed to the air, they become deoxygenated, dry up and turn dark.
Upper parts will turn plae due to lack of blood, lower parts will turn dark blue or purple as the blood pools inside the body, this is called levidity.
Oxygenated blood is bright red; deoxygenated blood is dark red.
Your blood circulates throughout your entire body. The heart pumps the blood. Some people are impractical and illogical and stick rubber bands around the finger, cutting off circulation or the flow of blood causing the upper part of where the rubber band is to turn blue or purple. Then, when the rubber band is taken off (hopefully) the finger will turn a mild pink, so the blood is naturally back to flowing properly.
Dark blood is blood from which the oxygen has been depleted. Once it is filled with oxygen again (in the lungs), it becomes lighter in color.
A scab turns dark primarily due to the oxidation of hemoglobin in the blood that has pooled in the dried wound. As the blood dries and exposure to air occurs, the red blood cells break down, leading to the formation of dark pigments. Additionally, the presence of proteins and other substances in the dried blood can contribute to the scab's dark appearance. This process is a natural part of healing as the body works to protect the wound underneath.
It loses oxygen!
Answer:The Role of Blood Vessels when Blood Circulates is Simple; they are the part of the Circulatory System that transports blood throughout the body. Explanation:There are 3 types of Blood Vessels: Arteries: Carry the blood AWAY from the heart.Capillaries: Allow for the Exchange of Chemicals & Water, like Oxygen in the lungs with Blood, and also between the Blood and Body's Tissues.Veins: Carry blood TOWARD the heart.Blood Vessels (Arteries and Veins) can change their diameter by muscular Contraction & Dilation, thereby changing the pressure which in turn changes the blood flow to organs which are 'downstream.' The Dilation and Constriction of Blood Vessels is regulated/determined by the Autonomic Nervous System (an example of this is when you Stand - the Blood Vessels in your legs Constrict, increasing the pressure in those Blood Vessels, to keep the average blood flow/pressure consistent). Another Function of Blood Vessels' ability to Constrict and Dilate is also a means for the body to regulate its temperature.