What is the anatomy of the human body? What is the structure of the human body?

Four characteristics of mammals: hairy on the surface, viviparous mammals, breathing using lungs, and relatively well-developed brains.

Mammals have hairs on the surface of their bodies, generally divided into five parts: head, neck, trunk, limbs and tail; breathe with your lungs; has a constant body temperature and is a homeothermic animal; The brain is large and well developed; Suckle; Viviparous. Mammalism and viviparity are the most distinctive features of mammals. The embryo develops in the mother's body, and the mother animal directly produces the fetus, and the mother animal has mammary glands that can secrete milk to feed the fetus.

Mammalian teeth are divided into incisors, canines, etc.

Common mammals.

There are more than 4,000 species of mammals, the most common of which are tigers, brown bears, wolves, goats, deer, rabbits, dogs, seals, hedgehogs and other animals.

1. Tiger. Tigers are carnivorous mammals with black and yellow hair all over their bodies, often growing in woodlands, grasslands, deserts and other environments, and are generally nocturnal. Tigers mate and breed in November every year, and the gestation period is about three months, and the cubs will live with the females.

2. Brown bears. The brown bear is one of the largest mammals on land, also known as the grizzly bear, with brown hair, a sturdy body, and a strong attacking force. Brown bears enter the breeding period from May to July every year, and the gestation period is about 8 months, and the bears will follow the activities of the female bears and leave after three years.

3. Wolves. Wolves are canine mammals, with gray hair all over their bodies, and often move in groups, with a group of about 7-30 wolves. Wolves mate and breed in February and April in the spring, and the young wolves will still live in the pack when they reach adulthood, protecting their younger siblings.

The structure of the human body is composed of the head and neck, the body, the arms, the legs, and other bone cracks, as well as blood vessels and muscles that are connected to function normally. The human body structure is more complex, and it needs to supplement sufficient carbohydrates, proteins and minerals, including water and other components, which can supplement the nutrients needed by the body and maintain the normal of various organs in the body. You can choose to do appropriate aerobic exercise, which can effectively enhance physical fitness.

The structural hierarchy of the human body is the cellular tissues and organ systems of the human body.

Human anatomy. The basic unit is the cell. There is a non-cellular structure of material between the cells called the interstitium.

Nerve tissue is made up of neurons and glial cells and is highly sensitive and conductive. Neurons are made up of cell bodies, dendrites, and axons. Dendrites are short, branching like branches, and their function is to transmit impulses to the cell body; The axons are long, terminated in nerve endings, and their function is to transmit impulses outward from the cell body.

Myocardial tissue is made up of muscle cells. Muscle cells have the function of contraction. Myogenesis can be divided into skeletal muscles according to morphology and function.

There are three types of smooth muscle and myocardium.

The center of cell metabolism is mainly composed of water, proteins, and ribonucleic acids.

Enzymes, electrolytes.

Isocomposition: Various organelles are also suspended in the cytoplasm. The main organelles are mitochondria and endoplasmic reticulum.

Lysosomes, centrosomes, etc. Nucleus.

It is surrounded by a nuclear envelope and contains nucleolus and chromatin. Chromatin contains nucleic acids and proteins. Nucleic acids are substances that control the heredity of living organisms.

The viscera and the viscera are coordinated with each other, one viscera is matched with the other viscera, the viscera is yin for the inside, and the viscera is yang for the surface. The surface and inside of the viscera are connected by the meridians, that is, the meridians of the viscera are in the viscera, and the meridians and veins of the viscera are in the viscera, and they communicate with each other through the meridians and qi and interact with each other, so the viscera and the viscera can influence each other and change each other on the lesion.

The relationship between the surface and the inside of the viscera is: the heart and the small intestine are on the surface and inside; The liver and gallbladder are on the outside; The spleen and stomach are on the outside; The lungs and the large intestine are on the outside; The kidneys and the bladders are on the outside; The pericardium is in phase with the trifocal phase.

Go to a Chinese medicine store and buy a body acupuncture point map OK

We recommend a mobile phone app "Human Anatomy Atlas" to let you know your body structure in detail.

(1) The human body includes:

1. Four parts: head, neck, torso, and limbs.

2. Three layers: **, muscles, bones.

3. Second chamber: cranial cavity, body cavity (including thoracic cavity and abdominal cavity).

4. One tube: spinal canal.

b) The basic structure of the human body:

1. Cells. 2. Organization.

3. Organs. 4. System.

5. Structural hierarchy.