Cardiovascular: Blood and Blood Vessels Arteries Essay

Submitted By marcyrussell
Words: 1152
Pages: 5
Open Document
CARDIOVASCULAR SYSTEM

Anatomy – blood, blood vessels arteries veins and capillaries and heart
Physiology – the function of the cardiovascular system is Transportation – substances that are transported include respiratory gasses, nutrients from the digestive tract antibodies, waste materials and hormones from the endocrine glands as well as transportation of heat from active muscles to the skin, where the heat can be dissipated Protection – the body is protected through disease fitting white blood cells and removal of impurities and pathogens Combat hemorrhage – this is accomplished by clotting mechanism which prevent the loss of body fluids from damaged vessels.
BLOOD – blood transports nutrients to, and waste products from, individual cells. Blood is a fluid medium containing formed elements and liquid plasma. Formed elements are erythrocytes (Red Blood) leukocytes (white blood) and thrombocytes (platelets). Blood is classified as a liquid connective tissue and is essential for human life due to tissues getting oxygen and nutrients only from its blood supply a blood cell makes a round trip through the circulatory system every 60 seconds. Blood makes up 8% of total body weight; the average size person is approximately 5 l or 6 quarts or 12 pints of blood.
Hematopoiesis – is the process of blood cell development
Color of blood varies from bright scarlet red to dull maroon, depending on oxygen content.
COMPONENTS OF BLOOD
Erythrocytes – Red blood cells (RBC) primary function is to transport oxygen to cells , do not have a nucleus which keep them from reproducing the life span of a RBC is 120 days , they are biconcave with raised edges and a flattened middle to allow greater surface area for more efficient diffusion of oxygen and movement ease through time capillaries . They are occupied by pigment call hemoglobin giving it its red color, hemoglobin an iron –based protein combines temporarily with oxygen and carbon dioxide so that gases can be transported and then released, and hemoglobin carries oxygen or carbon dioxide but not both at any given time. Special proteins on the surface of RBC determine the different blood type.
Leukocytes – white blood cells serve as part of the body’s immune system by protecting the body from invading pathogens and by removing dead cells and substances. WBC combat irritants by producing histamine, in extreme cases causes dilation of capillaries, decreased blood pressure and constriction of smooth muscles of the bronchi. Other WBC produce antibodies, which are produced in response to specific foreign substances such as bacteria, viruses or cells of an incompatible blood type.
Thrombocytes – also known as platelets, they are fragmented cells that are important in blood clotting or coagulation, their jagged shape helps the adhere to torn surfaces easily, such as occurs in a damaged blood vessel. The life span is 10 days. The clotting process starts when a vessel is damaged and it takes only a few minutes to form a clot. Coagulation is the process of transforming fibrinogen in plasma into fibrin threads and trap red blood cells Vitamin K and calcium are also need during this process. Once a clot is formed it goes through a process of tightening that draws the injured are of vessel wall closer together for repair, then reduces and stops blood loss. At the time a clot is formed an enzyme is formed which has the ability to slowly dissolve the clot over time when healing is complete.
Plasma – Straw colored liquid that helps transport blood cells. Approximately 55% of blood is plasma. Plasma itself is 90% water 10% solutes such as sodium, potassium and fibrinogen which aids in blood clotting.

Blood Types – The most common blood typing system is ABO system
Type a Presence of antigen a, antibodies B
Type B - b antigen, Antibodies A
Type AB a & B antigens no antibodies
Type O – absence of both antigens presence
Show More

Related Documents: Cardiovascular: Blood and Blood Vessels Arteries Essay

jordan moores 1 Essay

of the Cardiovascular System : Jordan Moores Label the following on the diagram below: Left atrium, right atrium, left ventricle, right ventricle, bicuspid valve, tricuspid valve, aortic valve, pulmonary valve, aorta, vena cava – superior and inferior, pulmonary vein, pulmonary artery. Structure of the Cardiovascular System The heart has four valves. Major arteries and veins of the heart Structure of the Cardiovascular System…

Words 307 - Pages 2

What Is The Function Of The Cardiovascular System

of the Cardiovascular System 1. Contractions of the heart generate blood pressure, which moves blood through blood vessels. 2. Blood vessels transport the blood from the heart into arteries, capillaries, and veins; and blood then returns to the heart so the circuit can be completed 3. Gas exchange occurs at the smallest-diameter vessels, the capillaries 4. The heart and blood vessels regulate blood flow, according to the needs of the body. Lymphatic system: Assists the cardiovascular system…

Words 593 - Pages 3

Heart Rate Essay

Cardiovascular: Project and Workout Log Workout Log As you learned in the Getting Started lessons, each topic in the HOPE course includes a workout log. As you work through the Cardiovascular lessons and activities, you will need to conduct and document six hours (or 360 minutes) of physical activity on your Cardiovascular Workout Log. A variety of physical activity can be defined as a minimum of three different activities. You will submit your completed workout log when you reach the final lesson…

Words 5611 - Pages 23

Explain How Gas Exchange Occurs In The Alveoli

1. List the structures and functions of the cardiovascular system. Do not forget blood and vessels are part of this system. Heart, arteries, veins, capillaries, and blood. The heart pumps the blood to transport nutrients, oxygen and hormones to cells throughout the body and removes metabolic wastes. 2. List the structures and functions of the lymphatic system. Lymph, lymphatic vessels (lymphatic capillaries) lymphatic ducts, lymphoid organs, lymphoid nodules and lymphocytes return fluid to all parts…

Words 886 - Pages 4

discuss energy roll Essay

P4: The Cardiovascular system The cardiovascular system refers to the heart, blood vessels and the systematic circulation (blood). Blood contains oxygen and other nutrients which your body needs to survive. The body takes these essential nutrients from the blood. At the same time, the body dumps waste products like carbon dioxide, back into the blood, so they can be removed. The main function of the cardiovascular system is therefore to maintain blood flow to all parts of the body, to allow it to…

Words 667 - Pages 3

Cardiovascular Disease Essay

Cardiovascular Disease Nanette Jones HCA/240 June 7, 2013 Michelle Rose Introduction The heart, the human heart is the size of a fist; on the other hand, it works persistently from before birth to death. The heart starts beating by 21 to 28 days after conception and beats all through life expectancy. The heart is also the strongest muscle in the human body. There are causes, symptom, and prevention for cardiovascular disease. The causes of cardiovascular disease vary on the…

Words 509 - Pages 3

The Body Composed Of The Cardiovascular And Respiratory System

Cardiorespiratory System A system of the body composed of the cardiovascular and respiratory systems. Cardiovascular System A system of the body composed of the heart, blood, and blood vessels. Respiratory System A system of organs (the lungs and respiratory passageways) that collects oxygen from the external environment and transports it to the bloodstream. Heart A hollow muscular organ that pumps a circulation of blood through the body by means of rhythmic contraction. (Contained within the mediastinum)…

Words 774 - Pages 4

Essay on Circulatory System

• The wrist (the radial artery) - place the palm of your hand facing upward. Place two fingers on the thumb side of your wrist gently, you will sense your pulse beating there. Either counts them for up to one minute, or thirty seconds and then multiply by two. Counting for 15 seconds and then multiplying by four is less accurate. It is also possible to test the pulse by touching the other side of the wrist, where the ulnar artery is. • The neck (the carotid artery) - place the index and third…

Words 3214 - Pages 13

Essay on The Cardio Vascular System

The cardio-vascular system The cardiovascular System The circulatory system (also names as the cardiovascular system) form up the network that delivers blood to the body’s tissues. Witch each heartbeat, blood is sent throughout our bodies, carting nutrients and oxygen to all of our cells. The circulatory systemic composed of the heart and blood vessels, including arteries, veins and capillaries. Everyone’s body’s actually have two circulatory systems: The pulmonary circulation is a short loop from…

Words 594 - Pages 3

Radhika gandhi Atherosclerosis Paper

Anatomy and Physiology course Atherosclerosis is the hardening of the arteries. It occurs when fat, cholesterol, and other substances build up in the walls of arteries and form hard structures called plaques. Overtime, these plaques can block the arteries and cause problems throughout the body. This paper talks about the organ system that this disease affects is the cardiovascular system, What the function of the cardiovascular system is, how disease is contracted and developed, Signs and Symptoms…

Words 1027 - Pages 5