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Do you remember the previous post regarding the heart in I/GCSE Biology? We move on talking about this with more details!
Blood
In I/GCSE Biology, it is important to remember the plasma and 3 types of blood cells!
Plasma:
- Liquid part of the blood
- Carries the blood cells through the blood vessels
- Contains many dissolved substances such as carbon dioxide and glucose
![broken image](http://custom-images.strikinglycdn.com/res/hrscywv4p/image/upload/c_limit,fl_lossy,h_9000,w_1200,f_auto,q_auto/4936730/247088_724363.png)
Then, let's go through 3 types of blood cells in I/GCSE Biology again!
White blood cells:
- Larger than red blood cells
- Have a nucleus
- Some surround and destroy pathogens
- Some produce antibodies that destroy pathogens
![broken image](http://custom-images.strikinglycdn.com/res/hrscywv4p/image/upload/c_limit,fl_lossy,h_9000,w_1200,f_auto,q_auto/4936730/105171_97707.jpeg)
Platelets:
- Are fragments of larger cells
- Have no nucleus
- Causes blood to clot when a blood vessel has been damaged
![broken image](http://custom-images.strikinglycdn.com/res/hrscywv4p/image/upload/c_limit,fl_lossy,h_9000,w_1200,f_auto,q_auto/4936730/312405_780805.png)
Red blood cell:
- Contains haemoglobin which carries oxygen
- Has a biconcave shape which gives it a larger surface area
- Oxygen diffuses in and out of the cell
- Has no nucleus to give the cell more room for more haemoglobin to carry more oxygen
![broken image](http://custom-images.strikinglycdn.com/res/hrscywv4p/image/upload/c_limit,fl_lossy,h_9000,w_1200,f_auto,q_auto/4936730/97663_273967.png)
The heart
It is very important in I/GCSE Biology to memorize the structure of heart
- Pulmonary artery ➡️ carries deoxygenated blood from heart to lungs
- Vena cava ➡️ brings deoxygenated blood from body to heart
- Aorta ➡️ carries oxygenated blood from heart to body
- Pulmonary vein ➡️ carries oxygenated blood from lungs to heart
![broken image](http://custom-images.strikinglycdn.com/res/hrscywv4p/image/upload/c_limit,fl_lossy,h_9000,w_1200,f_auto,q_auto/4936730/420338_268057.png)
It's commonly asked in I/GCSE Biology too!
The left ventricle is thicker than the right ventricle as it pushes blood all around the body.
And we're done with this topic! Well Done!
![broken image](http://custom-images.strikinglycdn.com/res/hrscywv4p/image/upload/c_limit,fl_lossy,h_9000,w_1200,f_auto,q_auto/4936730/548414_398250.png)
Drafted by Alyssa (Biology)
References:
- "6,735 Blood Plasma Illustrations", https://media.istockphoto.com/vectors/flask-with-blood-components-red-and-white-blood-cells-plasma-and-vector-id1124572244?k=6&m=1124572244&s=612x612&w=0&h=m6MM81mRCTfGCtNAU5CjZngBgjujRbHBDnKsYoD1tAc=
- "White blood cells", https://cdn-prod.medicalnewstoday.com/content/images/articles/327/327446/an-infographic-showing-the-different-types-of-white-blood-cells.jpg
- "Platelets", https://images.theconversation.com/files/272032/original/file-20190501-113830-9e06ae.jpg?ixlib=rb-1.1.0&q=45&auto=format&w=1000&fit=clip
- "Red blood cell". Photo from the internet.
- "Structure of the heart". Photo from the internet.