We all have a well-structured body and posture. We all possess it and it is all ours. How essential is our body to us? It completes us. In fact, it is everything to us! It enables us to carry out our day to day activities.
The body parts and the body functions coordinate and give us a complete range of movements and actions. Everything is so perfect that it just seems to be like an art which is put together piece by piece.
Our Creator has made us very beautifully! Let us explore a little more about the human body and how every part has been organised.
Human body is made up of head, with the torso connected to head with the help of neck. There are two arms and two legs.
What is an average height? Well, it is between 5 and 6 feet. The lower height than this range is called short, and more height is termed as tall. What is your height? Well, I am short here.
Human Body Systems
Do you know our body is just like a big multinational company which has millions of employees working together in specific departments? The employees are the cells and groups of cells. And, the departments are the major systems they form to carry out specific functions.
What are the systems in the human body?
This human body system comprises of the heart, blood and the blood vessels. The heart performs the function of pumping blood. It provides the oxygenated blood to all the other body parts and takes in the deoxygenated blood from them. Blood is the body fluid which flows in our vessels. Can you see the green elongated structures visible on your skin? They are the veins and they carry blood.
This human body system has nasal portion, trachea and the lungs. The respiratory tract forms the passage. Respiration is the biochemical process through which human body obtains energy using oxygen and glucose. The lungs are filled with air when you inhale and shrink back when you exhale.
This human body system is a defense system through which we protect our body from diseases. The immune system detects the foreign entity, identifies it and fetches a suitable immune response towards it. All the organs and tissues are involved in the immune system and its functions.
The skeleton of human body provides the framework to it. The bones provide the correct posture and alignment to our body. Just imagine if the bones were not there in our body. The body would have been wavy just like a piece of cloth!
This human body system comprises of lungs, large intestine and kidneys. This performs the process of excretion, which is removal or elimination of wastes. Apart from the above mentioned parts, sweat glands and liver are also significant.
This consists of the bladder and the kidneys.
Obviously, the muscles form this human body system. The movement of the body and the posture is monitored by this system. There are three types of muscles: skeletal muscles, cardiac muscles and the smooth muscles.
This human body system involves the glands. Glands perform the secretion of hormones. The major endocrine glands are-
- Pineal gland
- Pituitary gland
- Thyroid gland
- Parathyroid gland
This human body system contains the mouth, oesophagus, stomach and intestines. The tongue, salivary glands, pancreas, liver and gallbladder are the accessory organs of the digestive system. The process of digestion involves the breakdown of food into small parts, along with the absorption and assimilation.
This is the most important human body system which has the brain, spinal cord and nerves. There are two kinds of nervous system- central nervous system (CNS) and peripheral nervous system (PNS).
The brain is the master of all the organs which commands them to perform actions according to the messaged relayed to it. Spinal cord makes the backbone of our body and the nerve cells are the connections used to transfer the signals and electro-chemical messages.
The system comprises of the male and the female reproductive organs.
Human Body Parts
Since first standard we have been taught about the body parts. Do you know the human body parts? Can you count them and tell the functions? Let us play a small game. Get a paper with a pen. You have 5 minutes to recall all the human body parts and note them down on the paper.
Do not cheat. This is a fun game! Start the timer and come back when you are finished with time and writing. Now, check how many you got correct!
- Buttocks/ backside
- Upper arm
Now, these parts are visible from the exterior only. There are several human body parts which are not visible from the outside. Do you know them? List them out again! 😉
Human Body Organs
Several cells make the tissues and several tissues make the organs. What are the different organs in the human body? Want to play the recall game again? I hope you are not bored with that!
- Organs involved in the process of digestion are:
- Stomach: it is among the largest organs of the human body. It is like a sac, which is located in the belly. Do you know the capacity of your stomach? It is 2.5 litres! What you eat stays in your stomach for about 1 to 2 hours, and then eventually gets digested.
- Liver: it is the largest organ in the human body. Here, glucose is stored as glycogen and fats are converted into the high density and low density lipo-proteins. This is also the formation site of bile.
- Small intestine: the food is digested in this region, and stays here for as long as 8 hours. It is smaller in size as compared to the large intestine.
- Large intestine: this is followed after the small intestine. It has three parts or regions- ascending region, transverse region and descending region.
- Organs involved in the process of respiration are:
- Lungs: they are the major organs of the process of respiration. The inhalation is taking in the oxygen rich air and exhalation is releasing out carbon-dioxide. Just like a balloon expands as we blow air into it, the lungs also expand on inhalation. And, relaxes as the air is exhaled.
- Organs of excretion are:
- Kidneys: they are just like the shape of the bean and two in number. The kidneys filter out the waste material from the blood. Millions of nephrons are employed in this process of excretion.
- Urinary bladder: this is the organ which stores the urine.
- Organs of endocrine system are:
- Pituitary gland
- Adrenal gland
- Thyroid gland
- Parathyroid gland
- Organs of circulatory system are:
- Heart: the heart pumps the blood and functions without stopping from your birth to death! 72 beats per minute is the heart rate!
- Blood vessels
Spleen: it is a component of lymphatic system and is located in the belly portion.
- Sense organs are as follows:
- Eyes: these organs provide you with the ability to see and create visuals. They are responsible for vision.
- Nose: nose is the human body organ which helps in the process of respiration, as well as aids you in smelling the beautiful fragrances along with the smelly odours. You are able to predict the smell and identify with it.
- Ears: they are responsible for the audio part of your life. They have the function of aiding in hearing and maintain the balance.
- Skin: this is the organ of the human body which covers it and shields it from the direct attack of germs. It senses the touch, whether hot or cold, smooth or rough, or any other stimulation. It also helps to regulate the body temperature.
Tongue: the speech is defined by the use of tongue. Practice phonetics. Are you able to distinguish the sounds which use the tongue and its movement? Also, the taste buds on your tongue are responsible for the pleasure you derive from eating!
- Reproductive organs are:
- Uterus: In reproduction, uterus plays a significant role. It is the location where implantation occurs. It holds the fertilised egg till the time it turns into a baby ready to come out in the world. It provides the appropriate nourishment to the growing foetus and fosters is development.
- Testis and penis in male
Ovaries and mammary glands in female
- Nervous system organs:
- Brain: it is the organ which controls all the other organs and coordinates their functioning. It is present under the skull. The skull protects the brain as it is the most delicate human body organ. It has three parts: cerebrum, cerebellum and brain stem. You can read our article on human brain here.
- Spinal cord: the spinal cord runs from the brain till the hip bones. It provides the body posture and keeps the alignment of the body straight and erect.
Human Body Diagram
Human Body Anatomy
The human body, as you must have noted down, has several parts and organs. If it is just this on the exterior, wonder what it hides in its interior! The human body is too complex and very well organised.
There are billions of cells and they know their respective functions. Without disturbing the other group of cells, they execute their own function and maintain the way we live. Wonderful, isn’t it?
The anatomy of the human body has been organised in several stages and levels, and each component is interlinked to the other. Despite the complexity, the human body never fails to give us the best efficiency!
The study of anatomy is done through three methods:
- Gross anatomy: This includes the visual observation of the body part and also, when it is dissected.
- Cellular anatomy: It involves the study of the cells. Specific methods are used to follow this study and research work is carried out.
- Molecular anatomy: It is the study of even the simplest components of cells such as the biochemical components.
Internal Parts Of Human Body
The internal parts are located inside and cannot be seen just by seeing the outlook. They are as follows:
- Spinal cord
- Bronchial tube
- Small intestine
- Large intestine
This was a small list! There is a lot more which you cannot see from the outside. The skeleton provides the main structure to our body. It protects the internal organs, such as skull protects the brain and ribs protect the heart. Also, the skeleton also provides the attachment sites for the muscles.
There is muscular system which comes next. About 620 muscles are attached to the bones!
The respiratory system is the main source of oxygen to the human body. It has the nose, through which the air comes in, and the throat, trachea and lungs as well.
The cardiovascular system or the circulatory system is responsible for carrying out the circulation of blood throughout the body. A dense network of blood vessels carries the blood to and from the heart.
Digestive system provides the energy and involves mouth, oesophagus, stomach and several other parts.
The hormonal regulation is monitored by the endocrine system.
Nervous system controls the human body functions. It has the brain, neurons, spinal cord and the nerve cells.
Do not forget the excretory system and the reproductive system!
Images of Human Body
Human Body 3d Model
3D models are always fun to learn with and understand. They allow the explorer to hunt for the extra knowledge by providing an almost realistic view of the human body organ. The navigation becomes easier and also, many 3D models provide the facility of studying layer by layer. Even the smallest parts of the human body can be studied in detail, including the muscles, veins, bones and individual organs. You can easily study upon the common health issues and identify the exact reasons by locating on the model.
Have a look at the images