Oxygen and nutrients reach cells within tissues via the bloodstream. Blood is also responsible for transporting waste away from the cells.
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Nutrients and oxygen get into and out of cells through diffusion or active transport, depending on the nutrient.
Oxygen and nutrients are transported throughout the body via the red blood cells, which flow through the blood vessels (arteries, veins, and capillaries) and are propelled by the heart.
Blood is classified as a connective tissue. It is composed of various components such as red blood cells, white blood cells, platelets, and plasma. It plays a vital role in transporting oxygen, nutrients, hormones, and waste products throughout the body.
Blood is the tissue composed of plasma and various types of cells. Plasma is the liquid component of blood, while cells such as red blood cells, white blood cells, and platelets make up the cellular components. Together, these components work together to carry out vital functions in the body, such as transporting oxygen, fighting infections, and preventing excessive bleeding.
No, the red blood cell membrane is not an excitable tissue. Excitable tissues are able to generate and conduct electrical impulses, which is not a function of red blood cells. Red blood cells are primarily involved in transporting oxygen and carbon dioxide in the bloodstream.
Red blood cells do not contain nuclei. This allows for more space to carry oxygen and carbon dioxide in the blood.
The fluid in which blood cells float is called plasma. The three types of blood cells are red blood cells (erythrocytes), white blood cells (leukocytes), and platelets (thrombocytes). Red blood cells carry oxygen, white blood cells help the immune system fight infections, and platelets help with blood clotting.