What part of the waist is it and where is the waist?

The lumbar region is usually the line from the inferior border of the costal arch on both sides of the back to the anterior superior iliac spine.

The waist is an important part of the human body, in daily life, many movements are supported by the waist, and many incorrect postures will damage the muscles and spine of the waist, thus causing pain and discomfort in the waist. For example, squatting too hard or using an incorrect squatting position, incorrect way of lifting or carrying heavy objects, standing for long periods of time and sitting for long periods of time can cause lumbar muscle strain.

or herniated disc in the spine, which causes long-term low back pain and seriously affects daily life, study and work.

In normal times, it is necessary to pay attention to correct bad posture or habits, and participate in physical exercise appropriately.

The waist is located at the junction of the upper body and the lower body of the human body, that is, the position above the crotch and under the ribs, distributed on both sides of the spine, between the hip bone and the false ribs, and carries half of the weight of the human body.

The lumbar spine is located below the thoracic 12 vertebra and above the sacral vertebrae. There are a total of five vertebral bodies, and between each vertebral body is a lumbar intervertebral disc, and above the lumbar vertebrae is the posterior longitudinal ligament. It is flanked by the paraspinous ligament and the paraspinous minor, on the lateral side of the paraspinous minus are the erector spinae muscles, and in front of the lateral side of the erector spinae are the psoas major muscles on both sides, which make up the entire lumbar region.

Usually low back pain occurs due to the stability of the spine and the stability of the muscles, as well as the herniation of the lumbar intervertebral disc.

The waist is located at the junction of the upper body and the lower body, and the two sides are the paraspinous ligament and the paraspinous minor muscle group, the lateral side of the paraspinous minor muscle group is the erector spinae muscle, and the lateral front of the erector spinae muscle is the psoas major muscle on both sides!

The part of the human waist that is subcostal above the hip is distributed on both sides of the spine, between the hip bones.

and false ribs. parts of certain objects that correspond to or resemble a human waist; The middle part of an object, especially the middle part that is narrower or thinner than the two ends.

There are 5 lumbar vertebrae, and the vertebral body is tall, high in front and low in the back, and it is kidney-shaped. The foramina is large and triangular in shape.

Larger than thoracic vertebrae. Smaller than the cervical spine. The articular process is in a sagittal position, with the articular surface of the superior articular process concave and posteromedially, and the articular surface of the inferior articular process convex, anterolateral. The lateral aspect of the superior joint has a mastoid process, and the spinous process is a square bony plate that protrudes horizontally backward.

The lumbar muscles are:

1. Sacrospinous muscle.

A slender muscle in the back is called the sacrospinous muscle. Located on either side of the spine, like two large columns, from the occipital bone of the head to the very end of the spine (sacrum), the spine is placed in a distinct groove between the sacrospinous muscles, and is a powerful extensor muscle of the spine.

2. Rectus abdominis.

Located on either side of the midline of the anterior abdominal wall. When the upper fixation is fixed, both sides are contracted, which can make the pelvis tilt backward or maintain a higher horizontal position, that is, the abdomen is closed; Lower fixation bends the spine forward. Use sit-ups.

Exercises such as supine leg presses, supine right-angle sitting, etc., develop the strength of this muscle.

3. External oblique muscle: located in the superficial layer of the anterolateral abdomen, it is the latissimus flatus. In inferior fixation, both sides contract at the same time to bend the spine forward; Contraction of one side causes the spine to flex ipsilaterally and rotate to the opposite side; In upper fixation, both sides contract simultaneously to tilt the pelvis backwards.

Exercises such as weight-bearing body flexion and weight-bearing body rotation develop the strength of this muscle.

4. Internal abdominal oblique muscle: located in the deep layer of the external abdominal oblique muscle, it has the same shape as the external abdominal oblique muscle, and goes in the opposite direction. In inferior fixation, bilateral contractions act in the same way as the external oblique muscle; In addition to flexing the spine ipsilaterally, contraction on one side also causes the spine to rotate ipsilaterally, which has the opposite effect to the external oblique muscle.

Therefore, the movement of the lateral rotation of the body is actually the result of the synergistic effect of the ipsilateral internal oblique muscle and the contralateral external oblique muscle.

5. Psoas muscles: located on both sides of the spine and in the pelvis. It is composed of two parts: the psoas major muscle and the iliac (qia) muscle. When near fixation, flex and pronate the thigh; In distal fixation, the muscles on both sides contract at the same time, allowing the trunk to flex forward and the pelvis to tilt forward.

Such as sit-ups.

The kidneys refer to the kidneys. "Kidney" can be seen in Sun Yikui's "Medical Decree Xuyu Difficult Justice" in the Ming Dynasty: "Two kidneys are two kidneys, both of which are wrapped in a fat film.

The kidneys are the main excretory organs of humans or higher animals and are located on both sides of the lumbar vertebrae. Now kidneys are mainly used to refer to the kidneys of animals, such as: pig kidney, sheep kidney.

The basic physiological function of the kidneys is to produce urine and excrete various water-soluble substances from the urine that need to be eliminated. On the one hand, the physiological significance of renal urinary activity is the excretion of the end products of the above-mentioned metabolism, as well as drugs and foreign substances that enter the body.

On the one hand, it regulates the volume of body fluids and the excretion of their components, retains various useful nutrients and important electrolytes in body fluids, such as sodium, potassium, bicarbonate and chloride ions, and excretes excessive water and electrolytes, especially hydrogen ions.

Because the substances excreted from the kidneys are the most diverse and large in quantity, and can change the amount of urine and the amount of substances excreted in the urine according to the different conditions of the body, it plays an important role in regulating the body's water and osmotic balance, electrolyte and acid-base balance.

The kidneys refer to the kidneys. The kidneys are mainly used to refer to the kidneys of animals, and are rarely used to call the kidneys of people, such as pig kidneys, sheep kidneys, etc. Lamb kidneys and pork kidneys are common delicacies in Northeast barbecue and are deeply loved by the majority of diners.

The kidneys are dark red solid organs, resembling broad beans.

The surface of the kidney is smooth, and it can be divided into upper and lower ends, anterior and posterior sides, and medial and lateral margins.

The kidneys are an organ in vertebrates that are responsible for filtering impurities from the blood and maintaining the balance of body fluids and electrolytes.

Where is the waist? **Considered a waist?

If you don't do a good job of waist maintenance when you are young, you will have problems with the waist in middle age and old age, and there are several postures that are most likely to cause waist injuries, and female friends do not pay attention to the warmth of the waist, which will also bring problems such as palace cold, so they usually walk, lift things, and stand to maintain a correct posture to avoid waist injuries.

The waist is the position above the stomach and above the navel. For example, when squatting, don't use too much force, don't stretch your waist excessively, and when lifting things, don't just use one hand to lift heavy objects, which will cause damage to one side of the psoas muscle and cause pain, the correct way should be to cross the two hands to lift heavy objects, and when standing, you should also keep your waist straight, don't lean forward, and don't pout back.