1. Discuss the composition of blood. Be sure to include the components of both the formed elements and plasma. Include the percentage of volume and function of each component you discuss. Pg 611-612
Blood is a complex transport system that is vital for the pickup and delivery sevices. It is the major factor in the bodys heat-regulating mechanism. Blood has high specific heat and conductivity. Blood is responsible for picking up the food and oxygen from the digestive and respiratory systems and delivers them to cells. It also picks up wastes from cells for excretion by organs.Blood also contains parts of cells and cell fragments. The watery fluid part of blood is also known as the extracellular matrix and is a type of connective tissue.
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They are produced in the bone marrow. They are very motile and protects the body against harmful foreign particles, bacteria, and dead or dying cells by phagocytosing.
3. Discuss the mechanism of blood clotting.
Blood clotting is also known as coagulation. Blood clotting is the process by which blood is transformed into a solid state. It is caused by a series of chemical reactions taking place that traps the red blood cells. Blood clots to stop the ruptured vessels from bleeding. Blood clotting can also be dangerous in situations where a vein shouldn’t be plugged up to receive the amount of oxygen needed. Blood clotting is a complex process involving calcium ions, enzymes, platelets, & damaged tissues.
There are three stages of this process:
Formation of thromboplastin which can be formed in two ways known as the intrinsic system (blood making contact with a foreign surface) and the extrinsic system (blood making contact with damaged tissue).
Prothrombin converted into thrombin: Thromboplastin is formed in stage one and is converted into
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4. Discuss the structure of the heart. Include layers, chambers, valves, and tissue types in your discussion.
The heart is a four chambered hollow organ that consists of two atria and two ventricles.. In contracts rhythmically, pumping blood into the arteries. It is shaped and sized roughly like a man’s closed fist with two-thirds of the mass to the left of the midline.
Each system, as noted early, contributes to reversing cause of shock in this phase. The first of this will be seen when cause of shock is from hemorrhage and significant blood loss from the body, and all components of the hematologic system, or from blood, has its own function as a response (Kolecki “Pathophysiology”). The body’s process of quickly locating and slowing down bleeding within the body is called hemostasis. As soon as a blood vessel is broken, both the liquid and solid components within the blood effect how the body responds (Tortura 703).
Furthermore, Aristotle and Galen’s theories contributed to the Renaissance revival of heart anatomy. This reawakening made it possible for physicians to indicate the basic arrangement of the heart. It became commonly accepted that the heart was divided into four parts: two ventricles (lower chambers that pump blood out) and two auricles (upper chamber that r...
Red blood cells deliver the oxygen to the muscles and organs of the body.
According to Virtual Medical Centre (2014) the primary function of the blood is to act as a transport, to give the body protection and to help regulate. The blood dissolves gases such as oxygen and carbon dioxide. The blood also transports vital nutrients throughout the body, such as micro-nutrients, fatty acids and amino acids. The flow of the blood helps to regulate the body’s temperature. Also the blood removes wastes material of metabolism. Blood cells (white and red cells) are carried through the body to help with the body’s natural defense, blood clotting and the carry anti-bodies.
The cardiovascular system - The cardiovascular system is responsible for transporting nutrients and removing gaseous waste from the body. It consists of the heart, which powers the whole process, the veins, arteries, and capillaries, which deliver oxygen to tissue at the cellular level. The cardiovascular system carries blood that is low in oxygen away from the heart to the lungs via arteries, where oxygen levels are restored through the air once oxygenated, this blood is then carried throughout the body via arteries, keeping our organs and tissue alive. The cardiovascular system is the workhorse of the body, continuously moving to push blood to the cells. If this important system ceases its work, the body dies.
the heart is made of a muscle called the cardiac muscle unlike other muscles in the body the cardiac muscle never gets tiered its constantly working and never stops. It squeezes blood out of the heart and then relaxes it to fill it back with blood again in and this process continues and happens everyday until you are dead. The heart beats non stop this is achieved because of the cardiac Muscle.
Blood Plasma: The blood plasma makes about 55% of the human blood and 45% is made of cells. The pH and salt concentration of the blood plasma is controlled by the kidneys. The blood plasma contains hormones and salts, it also excretory product such as carbon dioxide, urea and uric acid. Food molecules such as glucose, fatty acids and amino acid dissolves in the blood plasma. Most importantly, blood plasma contains plasma proteins which are essen...
The heart serves as a powerful function in the human body through two main jobs. It pumps oxygen-rich blood throughout the body and “blood vessels called coronary arteries that carry oxygenated blood straight into the heart muscle” (Katzenstein and Pinã, 2). There are four chambers and valves inside the heart that “help regulate the flow of blood as it travels through the heart’s chambers and out to the lungs and body” (Katzenstein Pinã, 2). Within the heart there is the upper chamber known as the atrium (atria) and the lower chamber known as the ventricles. “The atrium receive blood from the lu...
The Circulatory System is a transportation and cooling system for the body. The Red Blood Cells act like billions of little mail men carrying all kinds of things that are needed by the cells, also RBC's carry oxygen and nutrients to the cells. All cells in the body require oxygen to remain alive. Also there is another kind of cells called white blood cells moving in the system. Why blood cells protect from bacteria and other things that are harmful. The Circulatory system contains vein arteries, veins are used to carry blood to the heart and arteries to carry the blood away. The blood inside veins is where most of the oxygen and nutrients are and is called deoxygenated and the color of the blood is dark red. However, blood in the arteries are also full of oxygen but is a bright red. The main components of the circulatory system are the heart, blood, and blood vessels.
It is about the size of a person's fist. The heart has four chambers. The upper two chambers are the right artium and left atrium, and the lower two are the right ventricle and left ventricle. Blood is pumped through the chambers, aided by four heart valves. The valves open and close to let the blood flow in only one direction.
The heart is a pump with four chambers made of their own special muscle called cardiac muscle. Its interwoven muscle fibers enable the heart to contract or squeeze together automatically (Colombo 7). It’s about the same size of a fist and weighs some where around two hundred fifty to three hundred fifty grams (Marieb 432). The size of the heart depends on a person’s height and size. The heart wall is enclosed in three layers: superficial epicardium, middle epicardium, and deep epicardium. It is then enclosed in a double-walled sac called the Pericardium. The terms Systole and Diastole refer respectively and literally to the contraction and relaxation periods of heart activity (Marieb 432). While the doctor is taking a patient’s blood pressure, he listens for the contractions and relaxations of the heart. He also listens for them to make sure that they are going in a single rhythm, to make sure that there are no arrhythmias or complications. The heart muscle does not depend on the nervous system. If the nervous s...
The cardiovascular system is composed of three organs in the human body: the heart, blood vessels, and blood. It is centered on the heart a powerful organ that steadily pumps blood to a complex system of blood vessels that extends to the entire body. The blood that is pumped to the body is rich with oxygen and nutrients needed to fuel the activities of the body’s tissues and organ. An average-sized adult carries about 5 liters (9 pints) of blood through the vessels, or better known as arteries (Seidel et al., 2014). In addition, the blood vessels can be described as the highway in which the blood travels on in order to get to all the organs in the human body. Furthermore, the vessels are connected to the heart and these two organs work in concert (i.e. together) in order to supply the human body with blood (Goff et al., 2013).
Red blood cell indices:(mean corpuscular volume [MCV], mean corpuscular hemoglobin (MCH), and mean corpuscular hemoglobin concentration [MCHC]
Our blood is able to connect all our organs together to create one organism and is able to transport the most vital and important molecules through these blood streams. Hence, blood cells are needed for immune system function and metabolic functions.
According to KenHub, the blood consists of cells, cell fragment and an aqueous solution(plasma).45% of blood are red blood cells, white blood cell and platelets and the rest are plasma which consists of water, plasma protein and