The Cardiovascular System by Marlene Sammell https://padlet.com/msammell962/ldb02p3q6rwecpsv Blood Pressure and Blood Vessels en-us 2022-04-27 17:24:29 UTC 2022-05-24 22:43:26 UTC hello@padlet.com Structure msammell962 https://padlet.com/msammell962/ldb02p3q6rwecpsv/wish/2160806318
  • Similar to arteries. 
  • Has 3 walls
  • Middle wall is made up of muscle tissue. 
  • The walls of veins are generally thinner than those of arteries

    • ]]>     2022-04-27 17:25:52 UTC https://padlet.com/msammell962/ldb02p3q6rwecpsv/wish/2160806318     Structure msammell962 https://padlet.com/msammell962/ldb02p3q6rwecpsv/wish/2160806605 They are only one cell thick, which makes it easy for diffusion to happen. 

    ]]>     2022-04-27 17:26:01 UTC https://padlet.com/msammell962/ldb02p3q6rwecpsv/wish/2160806605     Structure msammell962 https://padlet.com/msammell962/ldb02p3q6rwecpsv/wish/2160806738
  • Structure- the walls are very thick
    • Has three layers
    • Innermost layer- epithelial cells, which are very smooth. This helps the blood to flow freely. 
    • Middle layer- mostly muscle tissue. 
    • Outermost layer- flexible connective tissue. 

    • ]]>     2022-04-27 17:26:06 UTC https://padlet.com/msammell962/ldb02p3q6rwecpsv/wish/2160806738     Function msammell962 https://padlet.com/msammell962/ldb02p3q6rwecpsv/wish/2160806921 They carry the blood back to the heart so the cycle can repeat and blood can go around your body again. 

    ]]>     2022-04-27 17:26:11 UTC https://padlet.com/msammell962/ldb02p3q6rwecpsv/wish/2160806921     Function msammell962 https://padlet.com/msammell962/ldb02p3q6rwecpsv/wish/2160808328 Since the walls are so thin, diffusion can happen through them. oxygen and glucose are exchanged from the cells to the blood through the wall of the capillary. Capillaries also connect arteries and veins. ]]> 2022-04-27 17:27:04 UTC https://padlet.com/msammell962/ldb02p3q6rwecpsv/wish/2160808328 Function msammell962 https://padlet.com/msammell962/ldb02p3q6rwecpsv/wish/2160808491 These are the blood vessels that carry the oxygen rich blood out of the heart. Some arteries branch out of the aorta, the first branches called the coronary arteries carry blood to the heart itself. The arteries also control blood pressure. This happens when you are running. If your running your muscle cells need more oxygen- which the blood is carrying. To make sure that this happens the vessels near the muscles will relax and open up. Since the stomach, for example. doesn’t need as much oxygen at that moment their vessels contract. 


    ]]>     2022-04-27 17:27:09 UTC https://padlet.com/msammell962/ldb02p3q6rwecpsv/wish/2160808491     Photo msammell962 https://padlet.com/msammell962/ldb02p3q6rwecpsv/wish/2160808638 As you can tell the structures of veins and arteries are very similar. ]]> 2022-04-27 17:27:15 UTC https://padlet.com/msammell962/ldb02p3q6rwecpsv/wish/2160808638 Photo msammell962 https://padlet.com/msammell962/ldb02p3q6rwecpsv/wish/2160808755 2022-04-27 17:27:19 UTC https://padlet.com/msammell962/ldb02p3q6rwecpsv/wish/2160808755 Photo msammell962 https://padlet.com/msammell962/ldb02p3q6rwecpsv/wish/2160808859 2022-04-27 17:27:24 UTC https://padlet.com/msammell962/ldb02p3q6rwecpsv/wish/2160808859 3 factors that assist the flow of blood in the veins msammell962 https://padlet.com/msammell962/ldb02p3q6rwecpsv/wish/2167083145 1. They are near skeletal muscles and the contraction of the muscles help to push the blood through the veins. 
    2. When you breathe it squeezes pressure against the veins and pushes the blood more. 
    3. Larger veins in your body have valves that prevent blood from flowing backwards. ]]>     2022-05-02 16:56:28 UTC https://padlet.com/msammell962/ldb02p3q6rwecpsv/wish/2167083145     What is blood pressure? msammell962 https://padlet.com/msammell962/ldb02p3q6rwecpsv/wish/2167095237 How strong the blood is pushing against the artery walls. ]]> 2022-05-02 17:04:46 UTC https://padlet.com/msammell962/ldb02p3q6rwecpsv/wish/2167095237 How is it checked? msammell962 https://padlet.com/msammell962/ldb02p3q6rwecpsv/wish/2167095550 It's checked with a sphygmomanometer]]> 2022-05-02 17:04:57 UTC https://padlet.com/msammell962/ldb02p3q6rwecpsv/wish/2167095550 High blood pressure msammell962 https://padlet.com/msammell962/ldb02p3q6rwecpsv/wish/2167096030 High blood pressure has a lot of names- the silent killer, and hypertension. ]]> 2022-05-02 17:05:12 UTC https://padlet.com/msammell962/ldb02p3q6rwecpsv/wish/2167096030 How is it expressed? msammell962 https://padlet.com/msammell962/ldb02p3q6rwecpsv/wish/2167106319 As a fraction- ventricles contracting over ventricles relaxing ]]> 2022-05-02 17:11:52 UTC https://padlet.com/msammell962/ldb02p3q6rwecpsv/wish/2167106319