Blood is one of the most well-known chemicals in the human body since we have all
experienced a bleeding injury. Even though some individuals may not have a thorough
understanding of it, everyone recognizes that this fluid is essential for human life and that if you
lose a significant amount of it, you would probably die. Blood is, however, a unique type of
bodily fluid; it is a connective tissue made up of formed components called blood cells and
platelets floating in a fluid called plasma. Blood is both a fluid and a tissue. It is a tissue because
it is made up of a group of similar, specialized cells that have a specific purpose. The blood is
fluid because these cells are floating in a hydrogel medium called plasma (Conley, & Schwartz
2022). Its primary duties involve moving a variety of substances throughout the body, including
nutrients absorbed from the gastrointestinal tract, oxygen, which is essential for survival, and
hormones secreted by endocrine organs. It also transports biochemical waste to the organs of
excretion, such as carbon dioxide, which is moved from the tissues to the lungs for exhalation.
Therefore, the five main things that blood transport through the body are; oxygen, blood cells.
nutrients, hormones, and platelets.
We cannot envisage blood without the aforementioned components since the person in
question is likely not going to live. Each of these chemicals plays a significant role in their
respective domains of competence in the coordinated metabolic responses of the body. For
instance, during cellular respiration, oxygen burns glucose to provide the energy necessary for us
to think, walk, breathe, write, and perform all other active and passive tasks. An uninterrupted
flow of oxygen is necessary for aerobic metabolism to support human life and the bioenergetic
mechanisms that preserve cellular integrity. Reduced oxygen supply and ineffective oxygen
uptake by cells happen under a variety of conditions, and if they are not recognized, they can
cause organ malfunction and even death (Treacher & Leach,1998). Without hemoglobin in the
blood to transport oxygen, the person will become anemic, cells would be devoid of energy and
all metabolic or biochemical processes would end. "Another type of anemia may develop in
persons with low hemoglobin because the tissues may not receive enough oxygen. The value of
the most interest in healthcare for evaluating tissue oxygenation is the % saturation, or the
proportion of oxygen-occupied hemoglobin sites in a patient's blood" (OpenStav, 2018. P,794).
According to research, some organs are extremely sensitive to oxygen saturation levels; below
80%, most individuals start to experience shortness of breath, and after just four to five minutes
of oxygen deprivation, brain cells start to denature.
The body must continually move to strike a balance that is both acceptable and pleasant
for the physiology of the body as a result of the constant barrage of inputs from the changing
external and internal environment. Some of these environmental changes, particularly internal
environmental changes like variations in blood glucose levels, the menstrual cycle,