Heart experiments for kids: Witches’ kitchen with a heart
Experiments, with which you can examine what goes into your body.
Barrel you a heart! Let your heart do not slip into the pants! Hart to Hart!
One thought in my heart move! Congratulations from the heart!
The heart beats up to my neck! Broken love – broken heart!
The heart is one of the major organs. That is why we speak so often of him. The heart is also one of the institutions, which looks after the doctor first, or stop when he examined us.
In the following experiments, we listen to your body and hear about our body’s own heart beat, we measure the body temperature and find out what we have blood pressure!
1st Measuring body temperature – what temperature do you have?
Now and then, if you’re doing bad, get mom or dad out the thermometer. With the thermometer you measure the body temperature. She reveals how you are doing, whether you’re sick or healthy. And they can be measured easily.
Temperature measurement is not going anywhere
Because hands and feet, arms and legs in cold weather can also be quite cold, we measure the body temperature in the interior of the trunk, the so-called “core temperature”.This is in several ways:
Rectal: With simple thermometers to measure the bottom (that is, in medicine, “rectal”), in which the thermometer is inserted. Then it is there in your body and can measure its temperature. After about a minute you can pull out and read the thermometer. Do you have an electronic thermometer, it beeps when it has enough measured.
Under the arm or in the mouth: Pleasant are other places for measuring body temperature: in the armpit or in the mouth under the tongue. However, you can not be measured at these points as precisely as “rectal” because they just are not that far inside the body.
In the ear
For some years there is a very convenient and very fast method: the ear. It is only with an electronic ear thermometer. It looks into the ear to the eardrum. Because it looks pretty deep into it, it can measure the so-called “core temperature”.
How does it do that?
It captures the heat radiation from the ear. Much like radiators or hot burners radiate heat, heat radiates from the body in the form of so-called “infrared” radiation. The amount of infrared radiation from the inner ear, the ear thermometer measures and converts them to degrees Celsius (° C) around.
On the front:
Meanwhile, there are also electronic forehead thermometer. But they are not as accurate as ear thermometers. Because just when you sweat because you maybe have a fever, the forehead is rather cold.
What temperature is normal?
Your body core temperature is about 37 ° C (degrees Celsius). ”Approximately” because it varies slightly. In the evening it is higher than in the morning, if you’re excited, because you write a class work, it is also slightly higher. Properly in the altitude climbs your body temperature when you’re sick and have fevers. Between 37.5 and 38.5 ° C., still speaks to children of “high temperature” – an indication that changes occurring disease. Now it says to be careful that it does not get worse.
From 38.5 ° C you have “fever” and should definitely stay home and stay in bed to recover.From 40 ° C you have a high fever! Really dangerous, it is from 41 ° C, because when the body is too warm, it no longer functions properly and can be permanently damaged. Then that the brain is not functioning correctly, you can tell by the fevered imaginations when mixing reality and fantasy.
By the way: Even plants can have a fever, while three to five degrees warmer.
Why do you have a fever?
With a fever the body tries to repel attackers, such as bacteria and viruses. The fact it can not tolerate so warm and then does not reproduce so well. Because fever is very strenuous but you look and not feel good, you try to keep it with medicines or home remedies such as cold compresses in check.
2nd The Pulse – measure your heart rate
If you have a left hand lay it on your breast, you can feel your heart beat. There is a knock against the right chest. In children, about 100 times a minute – nearly 2 times per second – the contraction of the heart, the blood squeezed out of itself, relaxes and allows blood to flow again. The heart is the best pump in the world and holds over 100 years – longer than any man-made pump. The heart is a muscle strong and as big as the fist of the associated people. With a “stethoscope” you can hear it beat.
The stethoscope is a simple but indispensable tool for the doctor and for him as important as the trowel for the Masons or the chalk for the teachers.
The device consists of a small capsule, through which a membrane is stretched. Quite similar, but much smaller than a drum. When pressed on the membrane of this mini-drum, air is compressed in a little stethoscope. This air pressure is fed through tubes to the ears.
Even very small, delicate sounds can be so clearly heard with a stethoscope. The breath, the rattle in the lungs in cold or just the heartbeat. With each heart beat is a little bit of your chest pushed outward and presses something a stethoscope from the membrane, which lies on the skin.
The heartbeat can be heard quite loudly. These are the heart valves, and on-strike, similar to a door. In addition, the flow of blood can be heard as noise.
NOTE: Because the stethoscope is so sensitive, one must be careful with him. Anyone who bangs on the membrane, while he hears, can make his ear so broke, because it’s too loud.
3rd ”Calm down” – why did you two “blood pressure”
With this device measures the blood pressure the doctor.
In addition to the pulse of blood pressure is also betrays an important value of how you feel.Oddly enough, you have even two blood pressures, an upper and a lower, which one – as the result of playing football – always together indicates, so something like this: “120:80″ (read: “120 over 80″).
Actually, the blood pressure measurement is pretty brutal. Figuratively, it is not all that bad.For this, the doctor places a cuff around your arm, which he inflates with a little ball in his hand. He inflated until no blood comes into it more in your arm, pulls the trigger because the cuff blood. Then he puts the stethoscope in your elbow and slowly lets the air out of the cuff.At some point you feel it beating strongly in his arms: Here comes again Blood in the arm.This is the upper blood pressure, the so-called “systolic” (pronounced “sweet-tolische”).
He comes into effect when injected into the heart and sichzusammenzieht with “taste” the blood out of itself and in the veins. If the physician discharges the air from the cuff continues, the pounding sounds in my arms again someday. This is the second blood pressure, the lower or “diastolic” (pronounced “diastolic”). It occurs when the heart relaxes and fills with blood again, it squeezes the same again.
Now you know that the term “blood pressure” are always two levels, two blood pressures are meant. And you realize that blood pressure measurement not magic, but the principle is pretty simple.
Every age has its blood pressure
In children’s blood pressure is lower than in adults. And the elderly, he is the highest. They often have “calcified” veins that have been added over the course of life with debris like an old drain pipe.
Everything fits very little blood around the body and through it to provide anyway, the heart beat very strongly. Because the heart is old but that is very stressful. It can overdo it and eventually fail.