Important Systems of the Human Body

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We talk about the study of life when we talk about biology. This study includes everything about living things – animals, plants or humans. Human biology specifically deals only with the human life form. It deals with all the aspects of the human body. It talks about what comprises the human body and what makes it work.

Our bodies are made up of several systems working interactively. These systems keep the body functioning well so that we may go about our normal lives every single day. We have the nervous, respiratory, digestive, cardiovascular, immune, circulatory, reproductive, excretory, and endocrine system. Each system has its own specialized assignment to do inside us that contribute to our overall well-being.

If one system goes wrong the whole human body is affected. It is therefore important to keep our bodies healthy all the time, so that our systems will be working efficiently for us all the time. This can be done if we have the right knowledge about the human systems. This is the main reason why we have to study biology in our science courses. Let us discuss some of the important human systems.

The Respiratory System is responsible for our breathing. It has two zones namely the upper respiratory tract and the lower respiratory tract. These zones help us inhale and exhale freely. The organs involved in our respiratory systems are the nostrils, nasal cavity, pharynx, larynx, trachea, thoracic cavity, bronchi, and alveoli. The air flows through these organs in a certain proper order.

The normal breathing rate is 10 to 18 breaths on a per minute basis. When a man does extreme activities like running, the per minute breaths reaches up to 35.

The Digestive system is assigned in making sure the nutrients from the food we eat are well distributed to the different parts of our bodies. The man eats food which is then broken down through the process digestion. Digestion takes out the minerals that the body needs from the food. The minerals are then distributed to the different parts of the body where that are needed. The organs that are responsible for the digestive system of the body are mouth and salivary glands, esophagus, stomach, small intestine and large Intestine.

The mouth takes in food to the salivary gland. The saliva from the salivary gland helps break down the food and it will be swallowed. The esophagus will transport the food to the stomach. The food in the stomach is mixed with digestive juices. After that it will be transported to the small intestine. The food in the small intestine will mix with the other enzymes that are in the body. This will be the organ that will absorb the nutrients that are needed by the body. The nutrients that are needed by the body will be transported to the large system and it will be disposed as an excess.

The next important system in the body is the cardiovascular system. The organs involve here are the heart, arteries, veins and capillaries. The heart pumps the blood so it will travel all over the body through the arteries, veins, and capillaries. The blood is the one that transports oxygen, carbon dioxide, nutrients and wastes to our body. If the heart does not work well, the nutrients needed by the body will not reach its destinations. The body malfunctions and this leads to heart ailments.

Knowing how these systems work will help us how to take care of our bodies the right way. Learn what nutrients these systems need and eat foods rich in nutrients and vitamins.

The Importance of Health and Body Image

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We see images in the media almost every day of what the ‘perfect’ body ‘should’ look like. Today’s teens in particular are assaulted on television, in magazines or on the Internet with images of the ‘perfect’ body. Our body image is often based on what others look like or what we perceive others look like and how that relates to our goals and aspirations for our bodies.

What is body image? Our body image is just that… an image of what we see as our bodies. It’s the way we think about our body and how we think others see it. This awareness and perception is often based on appearance and function. People with a good body image will often see themselves as attractive to others while those with a poor body image will see themselves as unattractive or even repulsive to others.

Body image isn’t unchanging. It is ever ever-changing and commonly not based on fact but rather determined by our self-esteem and psychological in nature. Our body image is sensitive to our emotions, our moods, our water weight retention. We ascertain how to comprehend our body image through interaction with our families and friends but this only reinforces what is acquired culturally.

Our body image is also not grounded on the opinions of others. While some people with great body image may be thought of as unattractive by others while those with a poor image of their bodies might be rated as extremely attractive.

In today’s media driven culture, women are starving themselves and their children, they binge eat or binging and purging. Their children are watching closely to learn what is body image and how to integrate it into their lives. When children are learning from parents whose body image is closely tied to what they perceive as perfection it is no wonder that we are raising a generation of children who aspire to perfection to the point they become anorexic, starve themselves, constantly diet and never eat a nutritious well-balanced diet.

Particularly in their teen years young girls self-esteem is intimately linked to their body image. Self-esteem is how much value people place on themselves, their pride and how worthwhile they feel in themselves. Body image is often tied to self-pride for young teenage girls.

To alter your body image you don’t need to change the way you look, feel, act or live – but you do have to change the way you think of yourself and how attractive you consider yourself to be. Your body is yours. You can’t replicate the current top model and they can’t duplicate you. Nor do you want to because without variety this world would be pretty darned tedious. First be certain that your weight is within healthy bounds and then set about altering what you can and learning to value the diversity of the rest. For example, you can’t change your shoe size or your height but if you feel your legs are too flabby it isn’t something that several hours a week in the gym won’t cure.

The actual goal should always be your health and not your body image. Whether you are undertaking to achieve a healthy weight or healthy toned body the goal should be health. When you take your eyes off of the half-starved, lipo-suctioned, surgically enhanced television stars you’ll realize that your body is beautiful.

When you hear yourself saying negative things about yourself – STOP! You can be your own worst enemy and your biggest fan, rather chose to be your biggest fan.

Body Fat – Discover What It Really Is

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There are serious health effects associated with high body fat: heart attack, stroke, reduced mobility and low energy. High body fat percentage is an important health issue that must be addressed, but there are ways to reduce fat without spending a fortune on special diets or costly programs. All an individual needs is the desire to truly make a change and some creativity. Losing weight the healthy way takes time and commitment. Remember, slow and steady wins the race.

One of the first things you should do is to figure out your body fat percentage. You can find this out through a number of methods, but an exact number representing your body fat percentage is usually quite hard to discern, and your doctor can provide numbers that are more accurate in a few minutes. It involves an equation and finding out your average density.

Taking a body fat measurement will likely not make you feel very good about yourself, but it may motivate you to start looking in to ways to reduce your body fat. Using the body fat measurement as a guide, you can start up a plan to reduce your body fat and make a difference in your life. Depending on how high your body fat measurement is, you may have to make some serious lifestyle changes to accomplish your goals.

Replace Food with Better Food

One of the first things you should do is to replace rice, pasta and breads with vegetables. This isn’t like the Atkins diet, in which you drop the carbohydrates in your diet. This technique replaces a type of carbohydrate with another type of carbohydrate, providing your diet with a better way to burn them altogether. Fruits and veggies are better fat burners than rice, pasta and breads, so they will help you reduce your body fat.

Drink Water

Next, drink plenty of water each day. Consuming a lot of water actually makes it harder for the fat to stick to your body, allowing you to lose body fat and keep it off. Water also flushes your body out and removes harmful toxins, creating a better body system with which to fight off body fat. Water also raises your energy level, if you drink enough of it, and can improve your concentration.

Resistance Training

If you add some light resistance training to your workout and you do it before you do any cardio, you’ll find that you will have an easier time with your goal to lose body fat. This occurs because your body does not actually burn fat for the first portion of your exercise, so it is better to allow your body to warm up to lose body fat. Elevate your heart rate by doing some light training, then go forward with the whole routine.

Those three tips are just some of the ways you can lose body fat and create a healthier “you”. As you continue to exercise, drink water and watch your diet, you will start to feel healthier and will have an easier time keeping the body fat off.