https://padlet.com/15sweed/76guq52lgf2a Made with doughnuts en-us 2018-03-23 12:34:41 UTC 2025-11-02 19:42:12 UTC hello@padlet.com https://padlet-assets.s3.amazonaws.com/icons/Terminator.png 15jsmith1 https://padlet.com/15sweed/76guq52lgf2a/wish/245434058 What structure does the air pass through on it’s way to the lungs?

On it’s way to the lungs, air passes through the respiratory system. As the air enters the body through the mouth or the nose, it passes through the oval cavity (in the mouth) or the nasal cavity (in the nose). Then the air goes down the trachea and into the bronchi. The bronchi join the bronchioles which have Indy air sacs at the end of them called alveoli. The oxygen then diffuses through the 1 cell thick, moist walls of the capillaries and onto a red blood cell. The red blood then goes to the heart to be pumped around the body. It goes out of the heart in arteries and to a mucle. Then the red blood cell which is oxygenated goes into the capillary to diffuse II to the muscle. While this is happening carbon dioxide diffuses into the blood cell. The blood is now deoxygenated and goes back  to the heart in veins which have valves to push the blood upwards. The heart then pumps the deoxygenated blood to the lungs remove the carbon dioxide and pick up more oxygen.]]> 2018-03-23 13:06:46 UTC https://padlet.com/15sweed/76guq52lgf2a/wish/245434058 15sweed https://padlet.com/15sweed/76guq52lgf2a/wish/245434527  Where are pacemakers found: The sinoatrial node is found in the right atrium and it generates impulses to initiate heart contraction. The atrioventricular node is found between the atria and ventricles, and it conducts an electrical impulse from the atria to the ventricles.]]> 2018-03-23 13:07:29 UTC https://padlet.com/15sweed/76guq52lgf2a/wish/245434527 15dscamp https://padlet.com/15sweed/76guq52lgf2a/wish/245434643  How are the lungs adapted for gas exchange???

We need to get oxygen from the air into the blood, and we need to remove waste carbon dioxide from the blood into the air. Moving gases like this is called gas exchange. The alveoli are adapted to make gas exchange in lungs happen easily and efficiently. They give the lungs a really big surface area.]]> 2018-03-23 13:07:43 UTC https://padlet.com/15sweed/76guq52lgf2a/wish/245434643 15jreeves https://padlet.com/15sweed/76guq52lgf2a/wish/245434861 What is transported in the plasma?

Plasma is a straw-coloured liquid It transports dissolved substances around the body, including: hormones. nutrient water glucose  amino acids minerals and vitamins!


]]> 2018-03-23 13:08:13 UTC https://padlet.com/15sweed/76guq52lgf2a/wish/245434861 15jreeves https://padlet.com/15sweed/76guq52lgf2a/wish/245436432 What is an artificial pacemaker?

A pacemaker is a medical device which generates electrical impulses delivered by electrodes to contract the heart muscles and regulate the electrical conduction system of the heart]]> 2018-03-23 13:11:40 UTC https://padlet.com/15sweed/76guq52lgf2a/wish/245436432 15sweed https://padlet.com/15sweed/76guq52lgf2a/wish/245436920 Why is the wall of the left ventricle thicker than the wall of the right ventricle:Blood pressure. The left ventricle  has a thicker  muscle wall than  the right ventricle . This is because the left ventricle  has to pump blood all the way around the body, but the right ventricle  only has to pump it to the lungs. The blood in arteries is under higher pressure than  blood in the veins.]]> 2018-03-23 13:12:36 UTC https://padlet.com/15sweed/76guq52lgf2a/wish/245436920