https://padlet.com/24vk02752/xzsbcpwrexv88e2m Red blood cells en-us 2020-10-25 23:47:13 UTC 2024-07-14 02:51:11 UTC hello@padlet.com 24vk02752 https://padlet.com/24vk02752/xzsbcpwrexv88e2m/wish/860019393 The main job of red blood cells, or erythrocytes, is to carry oxygen from the lungs to the body tissues and carbon dioxide as a waste product, away from the tissues and back to the lungs. Hemoglobin is an important protein in the red blood cells that carries oxygen from the lungs to all parts of our body.]]> 2020-10-25 23:49:56 UTC https://padlet.com/24vk02752/xzsbcpwrexv88e2m/wish/860019393 24vk02752 https://padlet.com/24vk02752/xzsbcpwrexv88e2m/wish/860032870 The biconcave shape allows red blood cells to bend and flow smoothly through the body's capillaries. It also facilitates oxygen transport. Red blood cells are considered cells, but they lack a nucleus, DNA, and organelles like the endoplasmic reticulum or mitochondria. The cytoplasm of a red blood cell consists mainly of a 33% solution of hemoglobin which  gives red blood cells their color.]]> 2020-10-26 00:02:38 UTC https://padlet.com/24vk02752/xzsbcpwrexv88e2m/wish/860032870 24vk02752 https://padlet.com/24vk02752/xzsbcpwrexv88e2m/wish/860052478 An erythrocyte is a disc-shaped cell with a thick rim and a thin sunken centre. The plasma membrane of a mature red blood cell has glycoproteins and glycolipids that determine a person’s blood type. On its inner surface are two proteins called spectrin and actin that give the membrane resilience and durability. This allows the red blood cells to stretch, bend and fold as they squeeze through small blood vessels, and to spring back to their original shape as they pass through larger vessels. Red blood cells are incapable of aerobic respiration, preventing them from consuming the oxygen they transport because they lose nearly all their inner cellular components during maturation. The inner cellular components lost include their mitochondria, which normally provide energy to a cell, and their nucleus, which contains the genetic material of the cell and enable it to repair itself. The lack of a nucleus means that red blood cells are unable to repair themselves. However, the resulting biconcave shape is that the cell has a greater ratio of surface area to volume, enabling oxygen and carbon dioxide to diffuse quickly to and from hemoglobin.]]> 2020-10-26 00:18:21 UTC https://padlet.com/24vk02752/xzsbcpwrexv88e2m/wish/860052478 24vk02752 https://padlet.com/24vk02752/xzsbcpwrexv88e2m/wish/860055058 The cytoplasm of a red blood cell consists mainly of a 33% solution of hemoglobin, which gives red blood cells their red color. Hemoglobin carries most of the oxygen and some of the carbon dioxide transported by the blood. Circulating erythrocytes live for about 120 days. As a red blood cell ages, its membrane grows increasingly fragile. Without key organelles such as a nucleus or ribosomes, red blood cells cannot repair themselves. Many red blood cells die in the spleen, where they become trapped in narrow channels, broken up and destroyed. Hemolysis refers to the rupture of red blood cells, where hemoglobin is released leaving empty plasma membranes which are easily digested by cells known as macrophages in the liver and spleen. The hemoglo is then further broken down into its different components and either recycled in the body for further use or disposed of.

]]> 2020-10-26 00:20:20 UTC https://padlet.com/24vk02752/xzsbcpwrexv88e2m/wish/860055058 24vk02752 https://padlet.com/24vk02752/xzsbcpwrexv88e2m/wish/860097642 White blood cells should be our vice president for multiple reasons. White blood cells are also known as leukocytes. They can be divided into granulocytes and agranulocytes. The former have cytoplasms that contain organelles that appear as colored granules through light microscopy, hence their name. Granulocytes consist of neutrophils, eosinophils and basophils. In contrast, agranulocytes do not contain granules. They consist of lymphocytes and monocytes. Blood is just made out of red blood cells, white blood cells, and platelets. The red blood cells are the most important because they carry important gases to the lungs and allow us to breathe, and so helping that happen are the white blood cells which help defend against invading microorganisms and cancer cells. They also contain antibodies and proteins which destroy pathogenic substances.]]> 2020-10-26 00:48:56 UTC https://padlet.com/24vk02752/xzsbcpwrexv88e2m/wish/860097642 24vk02752 https://padlet.com/24vk02752/xzsbcpwrexv88e2m/wish/860121715 Voting for nerve cells is a choice that you will regret if you vote for them. The reason for that is nerve cells can be easily damaged and the connection between the brain and place of where the nerve cell is located will be miscoordinated and will cause many problems for the body. This is why you need a strong president who has great protection at all times and can provide for good security.]]> 2020-10-26 01:05:48 UTC https://padlet.com/24vk02752/xzsbcpwrexv88e2m/wish/860121715 24vk02752 https://padlet.com/24vk02752/xzsbcpwrexv88e2m/wish/860133038 Voting for pancreatic cells is a choice that will leave you stranded in confusion and disappointment. The reason for that is because if pancreatic cells do not produce enough insulin or your body cannot use the insulin your pancreas produces, you can develop diabetes. Diabetes can cause gastroparesis, which is a reduction in the motor function of the digestive system. Another reason is that if the pancreas does not produce enough digestive enzymes, for example, food will not be properly absorbed. This can lead to weight loss and diarrhea. Voting for a candidate like that ]]> 2020-10-26 01:13:05 UTC https://padlet.com/24vk02752/xzsbcpwrexv88e2m/wish/860133038 24vk02752 https://padlet.com/24vk02752/xzsbcpwrexv88e2m/wish/861384967 2020-10-26 12:31:40 UTC https://padlet.com/24vk02752/xzsbcpwrexv88e2m/wish/861384967