How many bones are there in the human body?

Le nombre d'os dans le squelette humain

Every human being does not have the same number of bones at birth and in adulthood. How many bones do we have exactly?

Discover in this file everything you need to know about the bones of the human body, from their distribution in the body to their number by parts.

The skeleton of an adult has 206 different bones.

How many bones has the human body?

As a reminder, bones make up our skeleton. Therefore, determining the number of bones in the human body is equivalent to determining the number of bones that make up a human skeleton.

The skeleton of an adult has 206 different bones classified into two systems: the axial skeleton and the appendicular skeleton.

In summary, there are 26 bones that make up the vertebral column, 8 in the skull, 14 in the face, another 8 cranial bones, 25 in the sternum and ribs, a total of 64 bones in the upper limbs and 62 in the lower limbs. lower. . But if we go into a little more detail, will you still be willing to do it?

How are bones distributed in the human body?

As we have just seen, the bones of the human body are divided into two groups. First, there are the bones of the axial skeleton and then those of appendicular skeleton. Let’s see what these are made of!

The axial skeleton

This part of the skeleton mainly includes the bones of the head, but also the bones of the trunk. can be considered as the real framework of the human body.

The axial skeleton and its number of bones

1 – The head

the 28 bones of the head they include those of the human skull, those of the face in addition to those of the ears.

  • The cranium : It is made up of 8 bones, some of which are duplicated and some of which are not.
  • Duplicates: there are two duplicate bones in the skull. These are the parietal bone and the temporal bone. The parietal bone is a lateral part located at the top of the skull. As for the temporal bone, it is located below the parietal bone.
  • Solitaires: there are four solitary bones in the skull. First, the frontal bone which is the bone of the forehead. Then the occipital bone ending at the back of the skull. Then the ethmoid bone which is in the middle of our orbits. And finally, a bone called the sphenoid bone.
  • Face It consists of 14 bones, including 2 single bones and 6 double bones.
  • Ears They are composed of 6 bones with 3 ossicles each (the hammer, the incus and the stirrup). These are the smallest bones in the human body. Its function is to receive sound waves, amplify them and then transmit the sounds to the fluid contained in the inner ear.
The skull and its number of bones.

2 – The trunk

The trunk is made up of the 52 bones of the neck, chest, abdomen, and pelvis.

  • The neck It is made up of 8 bones. One of these bones is the laryngeal bone. The other seven bones are vertebrae, that is, bones of the spine.
  • The thorax It is made up of 37 bones, including 12 vertebrae, 24 ribs, and finally a bone called the sternum.
  • The abdomen It is made up of 5 bones that are all vertebrae.
  • the basin It is made up of 2 bones that form the last two bones of the spinal column. These are the sacrum and the coccyx.

The appendicular skeleton

This last part of the skeleton refers to the bones that form the belts, as well as the bones of the limbs.

The bones of the appendicular skeleton and their number of bones.

1 – Members

In order to move, the human being must mobilize his limbs. These fall into two categories: superior members and the legs.

Superior members It broadly includes the arms, forearms, wrists, and hands.

  • the arms It consists of 2 bones, one each. This bone is called the humerus.
  • the forearms It consists of 4 bones with two bones per forearm. These are the radius and the ulna.
  • the dolls together they form 16 bones, so each wrist contains eight.
  • Each hand is made up of twenty-two bones, making a total of 44 bones for all two hands.

the lower extremities they concern the other extremities, in particular the thighs, legs and feet.

  • The thighs They are made up of 4 bones, two each.
  • The legs : each leg has two bones. This makes a set of 4 bones for the leg set.
  • Feet : each foot has twenty-eight bones. The feet therefore have between them 56 bones.

2 – Belts

In anatomy, a belt is a osseous system that joins the limbs to the spinal column. Particular mention may be made of the shoulder girdle and the pelvic girdle.

  • The shoulder girdle: connects the bones of the arm with the spine. It is made up of 5 bones, including the shoulder blades and the clavicles.
  • The pelvic belt: connects the bones of the lower extremities with the spinal column. It is made up of three bones, including the pubis.

Good to know : Osteology is the science that studies the anatomy of bones. Since man became interested in his bones, their shapes, their number and their functions, this science has not stopped evolving. It is normal today that everyone wants to know more about these elements that are an integral part of our body.

Special cases

The number of bones in the human body is very relative. It is true that this number varies between 206 and 224 in adulthood, but they are not fixed values. For example, at birth, a baby has about 350 bones. Over time, some of these bones join together to form a single bone. It is all these fusions that occur until adulthood that cause the initial number of bones to vary. Because of this, it is not possible to say exactly how many bones a teenager has. It is also necessary to take into account the case malformations Some have more or fewer bones than others. Therefore, it is difficult to determine with certainty the number of bones that the human body contains.

What are the 4 types of bones in the human body?

we can count 4 bone shapes in the human body. Each of them responds to a specific need. Thus we can cite:

  • long bones: humerus, ulna, radius, femur, tibia, fibula, phalanges, etc.
  • short bones: the tarsus (ankle), carpus (wrist), etc.
  • Flat bones: shoulder blades, skull bones, rib cage bones, sternum, etc.
  • Irregular bones: vertebrae, iliac bones, sacrum, coccyx, jaws, etc.

LOOK ALSO: How much blood is there in the human body?

How to take care of your bones?

Taking care of your bones means moving around, eating right, and getting plenty of sun exposure. But food is one of the most important criteria!

  • Fruits and vegetables : Very rich in minerals and potassium, they limit the loss of minerals from the bones.
  • Antioxidants: very rich in calcium (soybeans, spinach, watercress, white beans) favor the renewal of bone mass.
  • Cold sea fish: They are very fatty fish, rich in vitamin D and fat-soluble (salmon, herring, sardines, etc.)
  • Foods rich in vitamin D: fatty fish, egg yolks, oysters, dairy products, cod liver oil, etc.
  • Olive oil : Very rich in oleic acid or omega-9, olive oil greatly strengthens bone density.
  • Green Tea: fights demineralization and acidity in the body, like sencha tea from Japan.
  • Honey : it is very rich in phosphorus and especially in calcium, it is very good for health in general!
  • Spirulina: very rich in amino acids, iron, vitamins and minerals, a cure of 1 g of spirulina per day for 3 months would also be beneficial for our bones.

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