The heart is one of the most important organs in the body as it delivers oxygenated blood (blood exposed to oxygen from the lungs) to our cells, allowing them to respire and release energy. This lets us move around and survive. The heart consists of many parts which work together to make it perform efficiently. … Continue reading The Heart
What is MRI?
How can doctors monitor and assess a patient’s head injury to see what’s the best course of action to take? How can they know what problem is going on in a patient’s abdomen without having to use invasive forms of surgery? How can they better understand about a patient’s mind from a neuroscientific aspect? The … Continue reading What is MRI?
The History of Surgery
Surgery is a growing field. New technologies and methods for carrying out procedures are constantly evolving, making surgery much more safer and result in higher success rates. However, in the past, this wasn't at all the case. All aspects of medicine weren't as advanced and were completely different, including surgery. Anaesthesia wasn’t even around until … Continue reading The History of Surgery
How viruses help kill bacteria.
Viruses can harm us, one example being COVID-19. This is because viruses can not replicate or live by themselves. So they insert themselves into host cells (our cells) and use the host’s organelles and machinery to replicate. Once replicated, they burst out of the cell by cytolysis, killing the cell in the process. As a … Continue reading How viruses help kill bacteria.
The Kidneys and Controlling Water Levels
Your body needs to be able to regulate its water levels to prevent cells from getting damaged. Due to osmosis, if your body has too much water, your body cells will swell up and burst. On the other hand, if your body doesn’t have enough water, cells will shrivel up and die. Thankfully, as a … Continue reading The Kidneys and Controlling Water Levels
Telomeres and why we age.
What are telomeres? Telomeres are caps at the end of our chromosomes that protect our DNA from damage. They are made up of the same short DNA sequence repeated over and over again, with the same sequence of bases. They are important for a cells because without them chromosomes would stick together and would not … Continue reading Telomeres and why we age.
The Three Types of Radiation
There are three types of radiation: alpha (α), beta (β) and gamma (γ) radiation, which all have different properties due to their structure. Radiation is emitted from radioactive isotopes (isotopes are different versions of the same element with the same number of protons but a different number of neutrons, so they have the same atomic … Continue reading The Three Types of Radiation
Why do we shiver when we’re cold?
Imagine that it’s a freezing day, with snow piled up high and still falling and you wanted to go for a walk outside. So, you put on your extra fluffy pair of socks and very comfortable shoes and you step outside, without wearing one of the most important items of clothing, a coat. To say … Continue reading Why do we shiver when we’re cold?
Why am I scared? The science behind fear.
Biologically speaking, fear is an incredibly important feeling to have as it is responsible for helping us to get out of dangerous or scary situations. This could be something like running away from a crocodile to simply giving a speech to huge group of people. Whatever it is, it’s terrifying for us isn’t it? However, … Continue reading Why am I scared? The science behind fear.
How do Fireworks Work?
Fireworks can be characterised as self-contained explosive devices which contain a mixture of many components such as oxidising agents, fuels and metal salts. We often associate fireworks with celebration, but the first fireworks were used to warn off evil spirits. Simple firecrackers are thought to have been developed around 1000 years ago by Chinese monk … Continue reading How do Fireworks Work?