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Anatomical View

Lesson 5/16 | Study Time: 10 Min
Anatomical View

There are approximately 206 bones and 650 skeletal muscles within the typical human, and almost every muscle constitutes one part of a pair of identical bilateral muscles, found on both sides, resulting in approximately 320 pairs of muscles, as presented in this article. Nevertheless, the exact number is difficult to define because different sources group muscles differently, e.g., what is defined as different parts of a single muscle or several muscles. 

11 systems keep our body alive and functional. These organ systems are named as Integumentary System (skin, hair, nails), Circulatory System (heart, blood, vessels), Respiratory System (nose, trachea, lungs), Immune System (many types of protein, cells, organs, tissues), Skeletal System (bones), Urinary System (bladder, kidneys), Muscular System (muscles), Endocrine System (glands), Digestive System (mouth, stomach, intestines), Nervous System (brain, spinal cord, nerves), Reproductive System (male and female reproductive organs). 

Almost 78 organs in the human body vary according to their sizes, functions, or actions. An organ is a collection of millions of cells that group to perform a single function in a human body. The cells in these organs are highly specialized and formed for all the necessary actions for some specific time. Out of these 78 male or female body organs, the skin is the largest or biggest organ concerning its size and weight. The major or prerequisite human organ is the brain which handles all the functions and actions of the human body. 

Skin is the largest or biggest human body organ. The average weight of skin in the human body is about 10,886 grams which varies according to the size and weight of a human being. Human skin is made up of different ectodermal tissues and it protects all the inner body organs. 

The liver is the second largest organ of the male or female human body. Its average weight in a normal human body is 1,560 grams. The liver receives blood full of digested food from the gut. It stores some foods and delivers the rest to the other cells through blood. 

The brain is the third largest and major organ of the human body. Its average weight in a normal human body is 1,263 grams. The brain controls the actions of all the body parts. About 100 billion cells in the human brain make about 100 trillion nerve connections with nerve cells for messaging. 

The lungs are the fourth biggest organ of human beings’ bodies. The average total weight of the right and left lungs in a normal human body is about 1,090 grams. The major function of the lungs is to inhale oxygen and exhale carbon dioxide out of the red blood cells. The lungs can hold a total of up to 5 liters of air. 

The heart is the fifth largest human body organ, a prerequisite for a living human being. The major function of the heart is to pump blood to every part of the body to deliver energy to every body cell. In males, the average weight of the heart is 315 gm while in females this weight is about 265 grams. The ventricles, atrium, and aorta are some of the main parts of the human heart.

Kidneys are the sixth largest organ in every human body. There are two kidneys in every human being and the average weight of both kidneys is about 290 grams. The major function of a kidney is to separate the waste material by filtering the blood.  

The spleen is 170 grams heavy and it is the seventh largest or heaviest organ of the human body. It forms the red blood cells pulp and white blood cells pulp. Therefore it helps make blood and increase the immunity of human beings. 

Pancreas is the eighth largest human organ with an average weight of 98 grams in the human body. It is one of the most important glands which produce several hormones including insulin, glucagon, and somatostatin. The pancreas is a dual-function gland, having features of both endocrine and exocrine glands. 

The thyroid is the ninth biggest one in the human organ system. The average weight of the thyroid gland in the human body is 35 grams. It is the largest gland in the human body. The function of this gland is to produce thyroxin and triiodothyronine hormones.