How Many Bones in the Human Body ( Step by Step )
How Many Bones in the Human Body. There are 206 bones in the human body due to its skeletal structure. These bones exhibit significant features in terms of size and function. When the structure of the skeleton is examined, it is seen that the bones in the human body are of various sizes when viewed as a whole from the long and large bones of the limb, from the small-sized bones of the middle ear. Bones are structurally long and round. there are even gaps in some bone structures.
The bones in the human body are different from each other. The skeletal system comes from the head, body, hips, arms and legs. The bones in the body extend from the small bones in the middle ear to the trunk, hands, arms, legs and toes.
How Many Bones in the Human Body
There are 206 bones in the human body. 26 spines, 25 ribs and sternum, 22 in the beginning, 1 hiyoid, 64 superior, 62 subarctus, 6 auricular bones, magmuu 206. There are no sesamoid bones in this number if there is a knee cap bone (patella).
solid tissue composed of cells embedded in the bone, in the vertebrates with a hard intercellular filling.
Its main functions are to support the tissues by forming the skeleton structure of the body; to provide mobility of the body by forming a leverage system with the muscles attached to its surface; to protect the brain, spinal cord and internal organs; is to contain the bone marrow, the main blood forming tissue in the body, and to store the calcium necessary for many processes in the body.
External appearance of bones; The shapes of the bones vary according to their character. However, it is possible to separate the bones into three groups by comparing their sizes together,
1) Long bones in the human body
2) Flat bones in the human body
3) Short bones in the human body
1) Long bones in the human body :
Long bones are wrapped with bone membranes and cartilage from the outside. They help the breeding of the bones to be repaired and strengthened.
There is a channel in the long bone, there is yellow marrow in this channel, yellow marrow produces red blood cells.
There are pores at the beginning of the bone and in these pores red bone marrow produces bone cells.
- The bones are the longest bones.
- It is the bones that make the body move.
- It is found on the arms and legs.
- There are yellow marrow and bone channels.
2) Flat bones in the human body :
The length and width of the flat bone (Os plan) is greater than the thickness. In the flat bones, it shows two sides and different edges according to the shape of each flat bone (like the hip bone).
It is found in our feet and hands, and there is no yellow marrow in these bones.
- The bones are the bones whose width and width are almost the same.
- There are no yellow marrow or bone canals.
- The spine, hand and ankle bones are short bones.
3) Short bones in the human body :
In the short bone (Os breve) all three dimensions are approximately equal to each other (like the wrist bones in the human body )
Flat bones in the human body are ribs, rib cage, head. They have creep properties because they have a spongiform structure with flat bones. Most and tall are not too thick but too thick. Flat bones in the human body do not have yellow marrow, but there are red marrow producing bone cells.
- Flat-faced bones.
- Yellow marrow and bone voiced.
- The chest, skull and rib bones are flat bones.
How many bones in the Human Body by Body Parts
Where are the most bones of our region? How many bones do we have in our heads, how many bones are in our hands and feet? How many bones are in our arms and legs? We will respond briefly to such questions?
1- Number of bones in our head (29)
The number of bones in our skull is 29. This number may be a little overkill when you first hear it, but it is a correct number. There are exactly 29 bones.
* 8 skulls (cranial bone)
* 14 face bones (Facial)
* 6 hearing ie ear bone (Oditorial)
* 1 tongue bone (hyoid)
2- Chest Cage Bone Count (25)
The number of bones that make up the thorax is 12 right and 12 on the left side and 24 and 1 is the breast bone with 25.
3- Number of Bones in spinal column (33)
The number of bones in our vertebrae is 33 in total.
These bones are lined up on our spine.
4- Number of bones in arms and hands (60)
The number of bones in one arm and one hand is 30, while the number of bones in two arms and two hands is 60. One of the two regions with the most bone count in our body is this arm and hand region.
* 1 piece Arm bone
* 1 swivel bone
* 1 pelvic arch
* 8 wrist wrists
* 5 Hand cartilage
* 14 fingers
5- Number of bones in legs and feet (60)
The total number of bones in legs and feet is 60. The number of legs and bones on one hand is 30. As you can see, one of the regions with the most number of bones in our body is the region formed by legs and feet.
* 1 femur (femur)
* 1 Patella (knee bone)
* 1 Tibia (tibia)
* 1 piece Fibula (Calf)
* 7 Tarsus (Ankle bone)
* 5 paws
* 14 pieces of toe bones
Bone tissue types in the human body
Compact bone texture :
It is the outermost layer of bones which is quite hard.
Spongioz bone texture :
the inner parts of the metaphyses and epiphyses of short and long bones, and the inner surfaces of flat bones.
Bones forming the skeleton are examined in 4 groups. These include the head bones, the spine bones, the chest bones, the upper and lower bones
Head bones (ossa cranii)
The most basic function of the head bones is to protect the brain, which is a vital precaution.
The skull bones are examined in two parts, head and face bones.
1- Head bones in the human Body
* Occipital bone (auricular bone): It is found in the lower and posterior parts of the skull.
* Sphenoid bone (base bone): The bone at the base of the skull.
* Frontal bone (forehead bone): It is located on the front face of the skull and on the upper part of the eye orbits.
* Parietal bone (lateral cortical bone): A double-sided double-sided bone covering the lateral sides of the head space.
* Temporal bone (temple bone): Parietal is a double bone between the sphenoid and occipital bones. On the inside of these bones are hearing and balance organs.
* Ethmoid bone (scab): The bone in front of the sphenoid bone and behind the frontal bone.
2- Facial bones in the human body
* Maxilla (upper jaw bone) : The inactive jaw bone. It lies beneath the eyelid above the oral cavity.
* Os lacrimale (tear bone): It is a thin bone that forms the front part of the inner wall of the eye pit.
* Os palatin (palate): It is located behind the nasal cavities.
* Os nasale (nasal bone): Connected along a line in the middle. Between the foreheads of the upper jawbone and a flat square bone with four corners, it makes the skull of the back of the nose.
* Os zygomaticum (cheek bone): Located in the outer lower parts of the eye sockets.
Mandibula (mandible): The largest of the facial bones. Helps digestive system with chewing function.
* Os hyoideum (tongue bone): The tongue lies below the root and above the throat.
* Vomer: A thin rectangular bone that makes the back and bottom of the bone that separates the nasal cavities from each other.
3- Spine bones in the human Body
* In the dorsal part of the body (behind the back): the skeleton part that carries and supports the weight of the body that has come to the forehead from the vertebrae. The spinal cord (medulla spinalis), an important part of the nervous system, is under protection. The number of vertebrae that bring the bulb to the genus is 33. This number is 26. The spine is examined in five sections.
* Neck region (cervical vertebrae): The neck region has come from the vertebrae.
* Chest (thoracic) vertebrae: Chest vertebrae are twelve.
* Waist (lumbar) vertebrae: 5 lumbar vertebra. It has an important role in the transport of body weight. Compared to other vertebrae, they have larger and transverse protrusions.
* Spinal cord (sacral) vertebrae: In the child, 5 vertebrae merge into puberty and become single vertebrae.
* Tail (coccyx) vertebrae: The number of tail vertebrae ranging from 3-5 turns into a single bone in adolescence.
4- Breast skeleton (thorax) bones in the human body
* The chest skeleton is examined in two parts, the ribae (costae) and the chest (sternum).
* Outside the spine, there are 25 bones in the breast. 12 of these are ribs and one is the breastbone.
* Sternum is front and flat. The ribs are on the right and on the left 12. All of the ribs are linked to the backbone. At the front, the first 7 pairs of ribs are attached to the sternum. 8 9 and 10 double ribs are connected to 7 pairs. The ends of pairs 11 and 12 are empty.
* Where the ribs are joined to the sternum, there is cartilage tissue. At this point, the rib cage gains elasticity.
3- Upper bones in the human body
1- The clavicle (clavicula)
* It joints with the sternum and the scabbard. It is 15-17 cm long, 2-3 cm wide and easily breakable in a trauma.
* It is a triangular flat two bones. There are two faces, front and rear. On the front, there are points that the vertebral muscles bind.
3- Arm inferior pusum bone (humerus)
* It is the longest bone of the upper part of the body. On the upper side of the shovel and the forearm bones at the bottom joints.
* Elbow bone (ulna)
* The upper base is the thick bottom base.
4- Radius (forearm bone)
* The bone on the outer side of the forearm. Parallel to the Ulnar, but shorter.
4- Hand bones in the human body
It consists of a total of 27 bones. The wrists of the wrists are examined in 3 groups, namely, the fingers of the hand (5) and the fingers of the hand (14).
1- Hip bone (os coxae)
The hip bone wing (os ilii) is formed by the joining of the pubic bone (os ischii) and the roof bone (os pubis) in adolescence.
2- Pelvis bones in the human body
The sacrum at the back and the coccyte at the sides are joined by the hip joints joining together. The large upper part is called the pelvis major (large pelvis) and the lower part is called the pelvis minor (small pelvis).
Pelvis diameters are important.
Because the contraction of the uterus and abdominal muscles during delivery, the child who is being pushed downwards must first go through a small pelvist. There are differences between the male pelvis and the female pelvis. The female pelvis is wider in height and less in length than sacrum.
3- Thighbone femur (os femoris)
The skeleton is the longest, thickest, and most solid bone, and is articulated with hip bone and tibia.
4- Knee cap bone (Patella)
The base is like a triangle above. The front face is felt under the skin.
5- Kaval bone (tibia)
It is the second longest bone of the body. Tibian’s top is lower than the bottom. It’s a thin but very solid bone.
Skeletal System and Structure of bones in the human body
Supporting structures are the constructs that support the bodies of the organisms to form their own unique forms.
A. Skeleton Types
The majority of animals have a skeletal system that supports the body, protects it, and provides movement by attaching to the muscles. The skeleton seen in animals is of two types, external and internal skeleton.
1. Exterior Skeleton
The exoskeleton comes from organic and inorganic substances secreted out by special cells. The muscles are connected to the inside of the skeleton because the skeletal parts are out of the body in the exoskeleton. It is seen on the joints and some mollusks.
Exoskeleton limits growth. For this reason, animals with external scaffolding will either skip over the skeleton during development or form larger ones. This is called skin or shell replacement.
2. Internal Skeleton
The inner skeletal embryo differs from the mesoderm (middle skin) layer. It usually comes from the cartilage and bone. The muscles are connected to the scaffold from the outside. It does not limit the growth of the living. On the contrary, it provides the lengthening.
* Invertebrates do not commonly have internal skeleton. There is an inner skeleton developed only in the skin of thorns.
* In the vertebrates, the internal skeleton came from the cartilage and bone tissue.
B. Human skeletal system
In the human skeletal system comes from bones, cartilage and joints.
Number of Bones in Human Skeleton – How Many Bones in Human body Skeleton
Many people think that the bones in our body are composed of a solid, non-dynamic tissue mass. Whereas the most dynamic part of the body forms a system that is shaped according to different effects almost every day. The skeletal system is not an inanimate tissue. The blood vessels are a growing thickened and inspired structure supported by nerves. It is shaped according to the works that he has repaired himself. Negative behaviors can quickly lead to improper bone development.
Number of Bones in Human Body; We have 206 bones in our body. They vary considerably in size and function. If the bones forming a single structure by fusing are counted as the same, this number increases. The bones in our body are enlarged from small ossicles in the middle ear to the long and large bones in our legs. Some of the bones are long rounded and some are flat.
Newborn babies have more than 300 bones in their bodies. As human beings grow, the cartilaginous tissues merge and there are 206 bones in adult humans.
Skeletal system head body hips arms and legs; comes into being when the appropriate bone fragments come together. Long bones are bones like arm bones, leg bones. Hand ankle fingers and spine bones are called short bones. Flat bones are bones such as head ribs and shoulder blades.
Structure of Bones in the Human Body
The bones contain 25% water, 45% inorganic mineral salts (calcium phosphate, calcium carbonate, sodium phosphate and little sodium phosphate and sodium phosphate) and 30% organic matter provides flexibility.
The osteocytes in living bone cells and the organic intermediate substance secreted by these cells are called osein. These two structures bring about bone tissue. The bones are divided into two parts according to the directions.
a. Tight Bone Texture:
The outer surface of all the bones that make up the skeleton and the bones of the long bones come out of the tight bone texture. This texture is lamellar structure arranged in circles inside.
The lamella is found in the middle of the Havers channel through which blood vessels and nerves pass. When the nutrients and oxygen are transferred from the blood vessels of the Havers channel to the bone cells, the residual substances are recovered from the same path.
The side channels connecting Havers channels are also called Volkman channels. The lamellar units made of intermediate material that are filled with havers channels in the middle and filled with annular bone cells without spaces are called the Havers system.
b. Spongiform Bone Texture:
It is made up of fine bone lobes with red bone marrow and irregular cavities. It’s softer than a tight one. It is found inside the head of long bones and inside other bones.
Formation of Bones in the human body
In order for the bones to grow and develop well, there must be enough bone material on the one hand and enough intermediate material on the other. These events are regulated by some internal and external factors. If the factors that affect bone formation are examined one by one;
a. Hormones :
The Ca, P, K minerals required for the hardening of the bone must pass to the bone and the amount of their debris must be kept at a certain level. In particular, the passage of calcium from the bone to the bloodstream is regulated by the hormone calcitonin (thyrocalcitonin) secreted by the thyroid gland and parathormone secreted by the parathyroid gland.
When the growth hormone secreted from the pituitary gland (STH) is deficient, dwarfism (nanism) is over-secreted, and giantism (gigantism) occurs. The thymus hormone is effective in the formation of skeleton in embryonic development.
D vitamins provide Ca and P accumulation in the bones, allowing the bones to cure. In the absence of vitamin D, absorption of calcium and phosphate decreases intoxicatingly.
The result is softening and bending of the bones. This causes rickets in children and bone disease in adults called osteomalacia.
It is found in the structure of calcium, magnesium, phosphorus bones. It should be taken in large quantities during growth and pregnancy.
D. Genetic Factors:
Genetic factors are also important in getting the final shape with the growth of the canine.
Tasks of the Skeleton System
* To build the body of the body.
* Provide rigidity and rigidity in the body.
* To protect some internal organs from external factors.
* Provide the attachment surface to internal organs and muscles.
* Providing mobility to the body with the help of joints.
* To store some minarets that your body needs.
* To take part in blood production.
Types of bones of the Human body Skeleton
Human skeleton, head, body and skeleton of members are examined in three parts.
The skull is made up of the face and jaw bones. It is usually non-rigid joint.
b. Body Sculpture:
The bones that form the ribs of the chest, ribs, vertebrae, shoulders and buttocks are located in the body part of the skeleton. It is usually half-jointed.
c. Membership Skeleton:
The members are made up of two parts, the upper members (arms) connected to the upper part of the body with the shoulder belly on the top, and the lower members (legs) connected to the lower part of the body with the hip bandage at the bottom. It is a playground joint.
Joints with attachment sites of the bones are collected in three groups.
a. Non-working joints:
Skull, hip bone, pelvis, such as the skeleton does not move parts of the bones are visible. The articulating bones are very tightly connected to each other by saw teeth and indentations. There is no joint capsule or fluid.
b. Semi-Shaft Joints:
The joints are seen between the vertebrae and the chest. Cartilage discs between the vertebrae help to maintain flexibility.
c. Playing Joints:
It is full-moving joints that occur in the bones that assume the function of movement of the body and are visible in the bones of the arms and legs. The ends of the bones that make up the joints are surrounded by a common capsule, which is made from the connective tissue. The inner surface of the joint capsule is covered with a thin membrane.
This structure brings a secretion fruit that resembles an egg. This fluid (= joint fluid) collected in the joint space provides the slippery of the joints. The cartilaginous layers on the head of the articular bones prevent the head of the bone from eroding during movement.
In the joint region there is a joint ligament that extends from one bone to another. All these additions provide stability and ease of movement.