An overview on how blood vessels deliver nutrients to cells
By: Corinna Craddock
Capillary diffusion allows blood to deliver nutrients to cells. Human blood flows through blood vessels to deliver nutrients to cells. Blood is really liquid connective tissue. Like other tissues of the body it has cells, but cells in blood are suspended in a fluid...
An overview on how blood vessels deliver nutrients to cells
By: JRR
The human circulatory system has nearly 60,000 miles of blood vessels. These vessels provide a mode of transport for erythrocytes (red blood cells) leukocytes (white blood cells), platelets and plasma. It is the red blood cells that carry oxygen and nutrients to cells...
How smoking impacts the human circulatory system
By: Caroline Fynn
Smoking can cause extensive damage to all aspects of health. However, in relation to the circulatory system, smoking is frequently the reason for many diseases of the heart, and it damages the blood vessels, poisons the blood and creates havoc within the lungs. It is...
Structure and function of the hypothalamus
By: Corinna Craddock
The Hypothalamus Some behaviors are so automatic that they are almost reflexes. Automatic responses to stimuli are largely controlled by the hypothalamus. The hypothalamus sits behind eye orbits in a human skull. Looking at a side view of the skull, the hypothalamus is seen...
The importance of capillaries for circulation
By: Shaheen Darr
Blood circulates in our bodies through an amazing network of blood vessels called arteries, veins and capillaries. Capillaries are the smallest blood vessels, being thin and fragile with a diameter of only ten micrometres. They are made of endothelium, a single layer of cells that...
The role of the lungs in pulmonary circulation
By: Trenna Sue Hiler
Circulatory systems are necessary for living organisms to transport nutrients, waste and gases from all the cells in the body. Even single cell organisms perform this function and use their surface as an exchange point. In humans, the pulmonary circulation system is just one of...
An overview on diseases of the heart and cardiovascular system
By: JRR
The terms heart disease and cardiovascular disease are often used interchangeably. Heart disease is a broad term used to describe a variety of diseases that affect ones heart and sometimes blood vessels. Cardiovascular disease is a term that generally refers to conditions that involve...
Reasons why oxygen is so important to the blood and cells
By: Perry McCarney
Oxygen is extremely important to all the cells of our body. Without oxygen molecules (O2) we will begin to die within three to four minutes, unless our bodies are much cooler than normal, such as, when immersed in cold water. Yet individual oxygen atoms...
An overview of pulmonary circulation
By: JRR
The circulatory systems was first discovered by Ibn Naf in 1242. He is considered the father of circulatory physiology and his findings were published in Commentary on Anatomy in Avicennu's Canon. Most Christian factions of the time, condemned the work because it was a...
An overview on how blood vessels deliver nutrients to cells
By: Perry McCarney
All of the living cells of our bodies need nutrients to maintain themselves and carry out their functions. We obtain these nutrients by eating and drinking, with our gastrointestinal (digestive) tract breaking down the food into the components absorbed, mainly through the small intestine...

 

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