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Anatomy cardiovascul

QuestionAnswer
The cardiovascular system consists of this three things? Heart, blood vessels, and the approximately 5 liters of blood that the blood vessels transport.
Cardiovascular sys. Responsible for is? Transporting oxygen, nutrients, hormones, and cellular waste products throughout the body.
The cardiovascular system is powered by the body's hardest working organ? The heart, which is only about the size of a closed fist.
Even at rest, the average heart easily pumps? Pumps over 5 liters of blood throughout the body every minute.
The heart is a muscular pumping organ located at? Medial to the lungs along the bodys midline in the thoracic region.
What is the bottom tip of the heart known for? Known as its apex.
The top of the heart, known as the heart€™s base, connect to? The great blood vessels of the body: the aorta, vena cava, pulmonary trunk, and pulmonary veins.
Pulmonary circulation transports? Deoxygenated blood from the right side of the heart to the lungs, where the blood picks up oxygen and returns to the left side of the heart.
The pumping chambers of the heart that support the pulmonary circulation loop are? The right atrium and right ventricle.
Systemic circulation removes wastes from body tissues and returns deoxygenated blood to the right side of the heart.
The left atrium and left ventricle of the heart are? The pumping chambers for the systemic circulation loop.
Blood vessels are the bodys highways that allow blood to flow quickly and efficiently from the heart to every region of the body and back again.
The size of blood vessels? Corresponds with the amount of blood that passes through the vessel.
All blood vessels contain a hollow area called the lumen through which blood is able to flow. Around the lumen is the wall of the vessel which? Which may be thin in the case of capillaries or very thick in the case of arteries.
All blood vessels are lined with a thin layer of simple squamous epithelium? Known as the endothelium that keeps blood cells inside of the blood vessels and prevents clots from forming.
The endothelium lines the entire circulatory system? All the way to the interior of the heart, where it is called the endocardium.
There are three major types of vessels blood? Arteries, capillaries and veins.
Brachiocephalic artery carries blood into the brachial (arm) and cephalic (head) regions.
The subclavian artery runs into the axillary region where it becomes known as the axillary artery.
Veins rely on gravity, inertia, and the force of skeletal muscle contractions to help push blood back to the heart.
To facilitate the movement of blood some veins contain many one way valves that prevent blood from flowing away from the heart.
As skeletal muscles in the body contract they squeeze nearby veins and push blood through valves closer to the heart.
Myocardium? The muscular of the tissue of the heart.
The heart has its own set of blood vessels that provide the myocardium with the oxygen and nutrients.
When the muscle relaxes, the valve traps the blood until another contraction pushes the blood closer to the heart.
The coronary sinus? Is a vein on the posterior side of the heart that returns deoxygenated blood from the myocardium to the vena cava.
Red blood cells, also known as erythrocytes, are by far the most common type of blood cell and make up about 45% of blood volume.
The lack of a nucleus means that red blood cells contain no DNA and are not able to repair themselves once damaged.
White blood cells, also known as leukocytes
Platelets form in? the red bone marrow from large megakaryocyte cells
Platelets Also known as thrombocytes, platelets are small cell fragments responsible for the clotting of blood and the formation of scabs
Plasma is the non-cellular or liquid portion of the blood that makes up about 55% of the blood’s volume
Plasma is a mixture of water, proteins, and dissolved substances
The cardiovascular system has three major functions transportation of materials, protection from pathogens, and regulation of the body’s homeostasis.
Blood vessels help maintain a stable body temperature by controlling the blood flow to the surface of the skin
Blood vessels near the skin’s surface open during times of overheating allow hot blood to dump its heat into the body’s surroundings
In the case of hypothermia these blood vessels constrict to keep blood flowing only to vital organs in the body’s core
Certain hormones along with autonomic nerve signals from the brain affect the rate and strength of heart contractions
The volume of blood in the body also affects blood pressure
Hemostasis or the clotting of blood and formation of scabs, is managed by the platelets of the blood
Created by: Farcaster