Paper Topic:

Biology Short Essay

Biology Short Essay

1 ) Two of the latest technologies used by doctors image the heart of their patients are Magnetic Resonance Imaging and the 64-Slice Computed Tomography . Magnetic Resonance Imaging is a system that allows the cardiologist to see how the heart beats and functions through the detailed video generated using the process . MRI uses magnetic waves and radio waves to create the images . It is then passed on to a computer for viewing . MRI is noninvasive method , which is an advantage because no needles or tubes are subjected to the patient

just to conduct the procedure . But since it uses radio waves , patients with pacemakers cannot use it . The entire process also takes too long to complete , when compared to other cardio-imaging methods

The 64-Slice Computed Tomography , on the other hand , follows the same technology as the traditional CT scan . Only for this one , the detectors are reinforced for optimum heart imaging . The body is placed under multiple X-ray beams and the machine 's 64 detectors will then start producing a three dimensional rendition of the patient 's heart . One of the advantages of the 64-Slice CT scan is that doctors will have the ability to discriminate the distance between two objects . This allows them to make a more accurate diagnosis of the heart problem . But because CT scan uses x-ray beams , subjecting the body too much to radiation could be dangerous , especially to the fetus of a pregnant mother (Fuster , et al 2004

2 ) The sticky , dried mucus we find inside our noses is called snots and boogers . Snots are the sticky type and the dried ones are called boogers . They have only one function - and that is to trap the dirt germs , smoke , sand , pollen , fungi , and all other small particles from entering through our noses . Our nose is the primary pathway to our lungs . The presence of these two inside our noses prevents all the small elements from invading our body , which could eventually cause sickness and diseases . The mucus , along with the hairs inside the nose , filters the air we breathe . When we inhale , the dirt is trapped in . As we exhale , the dirt is being pushed out (Avila 1995

3 ) The funny sounds we hear from our stomachs when we are hungry come from the small intestines . The muscles inside our intestines tend to contract to push the food , as well as the intestinal juices , down the abdominal tract . The process of pushing the food is done on a regular basis , even if there is no food present in the stomach . And that is the reason why the grumbling sound is relatively louder when you are hungry There is no food to be pushed down at all . When that happens , acids are produced instead . And so the body reacts accordingly to achieve homeostasis . Homeostasis is the process of maintaining a stable internal body organs and overall well-being . In response to this state , the body has to drive the acids outside of it . And so...

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