๐๐๐ง๐๐ช๐ก๐๐ฉ๐ค๐ง๐ฎ ๐จ๐ฎ๐จ๐ฉ๐๐ข
๐ฐ๐ก๐๐ญ ๐ข๐ฌ ๐ญ๐ก๐ ๐๐ข๐ซ๐๐ฎ๐ฅ๐๐ญ๐จ๐ซ๐ฒ ๐ฌ๐ฒ๐ฌ๐ญ๐๐ฆ?
The circulatory system is responsible for transporting materials throughout the entire body. It transports nutrients, water, and oxygen to your billions of body cells and carries away wastes such as carbon dioxide that body cells produce.
๐ฉ๐๐ซ๐ญ๐ฌ ๐จ๐ ๐ญ๐ก๐ ๐๐ข๐ซ๐๐ฎ๐ฅ๐๐ญ๐จ๐ซ๐ฒ ๐ฌ๐ฒ๐ฌ๐ญ๐๐ฆ
โฅ The heart is the organ at the center of the circulatory system. It pumps blood around the body.
โฏ ๐ฟ๐๐๐๐๐๐๐๐๐๐
โข protective sac of connective tissue
โข surrounds the heart
โข filled with fluid
โฏ ๐ด๐๐๐๐๐๐๐๐๐
โข outermost layer
โข fat to cushion heart
โฏ ๐ผ๐ข๐๐๐๐๐๐๐๐
โข middle layer
โข primarily cardiac muscle
โข muscle of the heart
โฏ ๐ด๐๐๐๐๐๐๐๐๐๐
โข innermost layer
โข thin and smooth
โฅ The septum acts as a wall. It prevents the mixing of the oxygen-rich blood and the oxygen-poor blood.
โฅ The upper chamber (receives blood) is the atrium.
โฅ The lower chamber (pumps blood out of the heart) is the ventricle.
โฅ The atria collects blood that enters the heart.
โฅ The ventricles pump blood out of the heart.
โฅ The valves between the atria and ventricles are connected to the inner walls of the heart by tough tendons.
โฅ Blood brings oxygen and nutrients to all the parts of the body so they can keep working.
โฅ The heart can pump blood because it is made of muscle. Muscle tissue works by contracting (squeezing) and relaxing.
โฅ Blood is composed of:
โข Plasma - the fluid part of the blood and is composed of 90% of water.
โข Red blood cells, white blood cells and platelets constitute the solid part of blood.
โฅ Blood vessels are a network of pathways through which blood travels throughout the body. Arteries and veins are the two primary types of blood vessels in the circulatory system of the body.
โฏ ๐ฐ๐๐๐๐๐๐๐
โข large vessels
โข carry blood from heart to tissues of body.
โข carry oxygen-rich blood, with exception of pulmonary arteries.
โข thick walls-need to withstand pressure produced when heart pushes blood into them.
โฏ ๐ฒ๐๐๐๐๐๐๐๐๐๐
โข smallest blood vessels
โข walls are only one cell thick and very narrow
โข important for bringing nutrients and oxygen to tissues and absorbing carbon dioxide and other waste products.
โฏ ๐
๐๐๐๐
โข has a job whereas once blood has passed through the capillary systems, it must be returned to the heart
โข walls and contains connective tissue and smooth muscle.
โข largest veins contain one way valves that keep blood flowing toward heart.
โข many found near skeletal muscles.
โข when muscles contract, blood is forced through veins.
โฅ Red - artery
โฅ Middle - capillaries
โฅ Blue - veins
hi! i hope you enjoyed learning the circulatory system!! i had fun doing this carrd and i am happy to help other students! โก
โฅ take regular breaks
โฅ watch youtube videos for further understanding
โฅ make use of diagrams
โฅ organize your study space
most importantly, always keep safe! โก
| note หยทอเผยทอห*โ |
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| you're doing really well! never doubt yourself โก if you had a bad day today, you can always try again tomorrow !! mwa ^^ |