Imagine building without steel skeleton. May be just a block of cement. Similarly, the human body without the skeletal system, and will be just a bag of muscle, and without any form or structure. The system consists of the human skeleton consists of different types of bones and joints. The brief introduction about the human skeletal system below.
Formation of the human skeletal system
And called the process by which bone is formed ossification. Ossification is a lifelong process. There are two types of ossification:
Ossification Endochronal: when the fetus at an early stage of development, and has a skeleton composed of cartilage. This cartilage gradually develop in the bone, through the process of ossification endochronal. Consists bones such as the femur (thigh bone) of this process.
Membranous ossification: Here is the bone formation of connective tissue made of bone cells called mesenchymal cells. The bones of the skull by this process.
The organization of the human skeleton
The human skeletal system is asymmetric vertically in nature. It consists of the axial skeleton and appendicular skeleton.
The axial skeleton
Axial skeleton consists up of 80 bones. The main function of the axial skeleton is to protect the devices, such as the brain, heart, lungs, and maintain an upright position of the body. 633 skeletal muscles work on the axial skeleton. The following table gives information about the organization of the axial skeleton.
Name for a set of bones
Total number of bones
Spine
26
Rib cage
12 pairs of ribs
Frown
1
Skull
29
Appendicular skeleton
It is made up of 126 bones and attached to the axial skeleton. It protects the organs involved in the secretion, reproduction, and digestion. Body movements are possible because these bones. The following table gives brief information about the organization of appendicular skeleton.
Name for a set of bones
Total number of bones
Girdles pectoris (shoulder part)
4
Upper Parties (arms)
60
Pelvic girdle (part hip)
2
Lower limbs (legs)
60
Functions of the human skeletal system
Will be an introduction to the human skeletal system would not be complete without a description of the tasks. These posts are below.
Support: the human skeletal system gives the appropriate form of the body. This is the framework that supports the body and muscles.
Body movements: the current bone joints between different allows body movements.
Production of stem cells: produce stem cells in the bone marrow, which is part of the skeleton. These stem cells in the development of white blood cells, red blood cells and platelets.
Calcium and iron storage: bone can be stored calcium and iron. Are stored about 99% of the calcium in the body in bone. It helps in the metabolism of iron and calcium.
Role in the endocrine system: Osteocalcin is a hormone that regulates the deposition of fat and sugar. This hormone is released from the bones.
Protection: It is the most important function of the human skeletal system. The following table shows the organs and bones that protect them.
Devices
Bones
Brain
Skull
Lungs and heart
Rib cage
Shoulder
Clavicle, scapula
Knee, elbow
Patella, ulna
Wrist and ankle
Carpals, Tarsals
The difference between male and female human structural systems
There are a number of differences between males and females in the skeletal system. Pelvis (femur in part) is larger and flatter in females, in order to make it easier to give birth. Round bone in females and less than among males. Men have more squared jaws and brow ridges and clearer. Shoulder in females rounder in their male counterparts.
Bones
The new baby has approximately 230 bones, while the adults, on average, has 206 bones. Consists of the human skeleton consists of 5 types of bones. These are:
Long bones: a length greater than supply their own. Limb bones and long bones. (Carpals or bones of the wrist and foot bones tarsals or exceptions.)
Short bones: the length and width is approximately equal. Carpals tarsals are small bones. They help small movements.
Flat bones: and its main function is to protect the members of the body. They are flat and serve as a base for muscle attachments. Sternum or breastbone, shoulder or shoulder blade and skull and some examples of flat bones.
Irregular bones: the bones in the spine and jaw fall (lower jaw) under this category. Have irregular shape.
Sesamoid bones: These are small bones in joints to protect the tendons (fibrous connective tissue that connects muscle to bone). Hat knee patella or is an example of these bones.
Arthritis
When two or more bones meet, the joint is formed. It allows for different body movements. There are 3 types of arthritis are:
Immovable links: also called fibrous joints. As the name suggests, they can not move. Skull bones and joints immovable.
Slightly movable joints: also called cartilaginous joints. Intervertebral discs come under this category.
Freely movable joints: also called synovial joints, and these are freely movable joints and helps the body to move. Parties are an example of synovial joints.
The human skeletal system is no less important, as compared with other systems of the body. It gives the body a definite shape, structure, and protects vital organs. And can be called the basic infrastructure of our bodies, and without which the human body can be had a ball like structure rolling on the floor.
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