Why do human bones move, and the role of skeletal muscles in human movement?

1) Ligament connection The direct connection between two bones by connective tissue is called ligament connection. Ligaments are mostly membranous, flat, or bundle-like and are composed of dense connective tissue. To the naked eye, it is white and shiny, and the place attached to the bone is woven together with the periosteum, which is difficult to peel off, and some ligaments are made of elastic connective tissue, and the naked eye is pale yellow, which is called the ligamentum flavum (such as the ligament).

The general ligament connection allows for minimal movement between the two bones. However, between some bones, the two straight edges are opposite each other or are embedded with tooth-like edges, and a small number of connective tissue fibers penetrate into the bone on both sides, so that the connection is extremely tight, called sutures, such as the coronal suture and herringbone suture of the skull. (2) Cartilage integration The cartilage connection between two adjacent bones is called cartilage integration.

Cartilage tissue is a kind of connective tissue, which is solid and elastic, composed of a large number of chondrocytes and interstitium, due to the different components of the interstitium, there are hyaline cartilage, fibrocartilage and elastic cartilage. The cartilage attached to the sternum by the first helper bone is hyaline cartilage, while the intervertebral disc between the vertebrae of adjacent vertebrae is made up of fibrocartilage. Because cartilage has a certain elasticity, it can do light activities.

Some cartilage unions remain lifelong, while most cartilage unions ossify into osseointegration during development. (3) Osteosis is derived from cartilage integration through ossification, and is completely immobile, such as five sacral vertebrae fused into one sacrum by osseointegration.

There are four conditions that must be present for movement to occur: 1) the presence of bones, 2) the formation of joints between bones (including ligaments that connect them), 3) the presence of corresponding skeletal muscles, the contraction and relaxation of which determine the amplitude and direction of movement, and 4) the control and coordination of motor nerves.

The locomotor system is made up of bones, bony junctions, and skeletal muscles.

In the exercise of the role of leverage, the movable bone connection is called the joint, the joint plays the role of the fulcrum in the movement, the skeletal muscle is composed of tendons and muscles, mainly composed of muscle tissue, so it will contract to produce power to pull the bone around the joint to move and produce movement

So it's the power effect.

The effect is very large, the support of bones is inseparable from our development, and it will also affect our core strength support, and at the same time, it will also make our exercise more fruitful and effective, and can also make our exercise more effective. It also makes our muscles more developed.

It can make our body more strong, it can also make our bones more developed, and it can also make our support stronger. It can also have a good effect on people's physical fitness. It allows our bones to develop faster.

Movement is carried out by the contraction of skeletal muscles, which are attached to the bones, and the bones play a role in supporting the human body.

Be sure to pay attention to safety, learn to relax, pay attention to posture, control the amount of training, pay attention to bone development, and pay attention to the stretching after exercise.

You need to pay attention to the way you train, you need to pay attention to the protection of your bones, you need to pay attention to the protection of your body, you need to pay attention to your own way of exercising, you need to pay attention to your exercise intensity, these are all issues that need to be paid attention to.

Be sure to do a good job of warm-up exercises, to move the meridians, to move the wrists and ankles, to master the skills in the training process, and most importantly, to pay attention to personal ability.

Is exercise good for bone health? Why?

Strengthening exercise in adolescence is beneficial to lifelong bone health.

Researchers at Curtin University in Australia followed 984 Australian children from early childhood to adolescence in terms of movement and development. They found that children who continued to participate in physical activity during the age of 5 and 17 years entered the age of 20 years and had significantly better overall health, especially the mineral content in the leg bones, than those who did not like to exercise.

In addition, the survey results showed that compared with individual exercise, having someone to accompany or participate in group sports organized by the team had a more obvious effect on children's bone growth and general development.

Joanne McVeigh, a researcher at Curtin University, points out that adolescence is an important stage for bone growth, and ensuring that bones have the best chance of developing at this time will greatly reduce the risk of osteoporosis in old age. Parents should encourage children before the age of 18 to continue physical activity, regardless of their workload.