Education Head and Neck Chest Muscle Anatomical Model, Human Anatomy Figure, Human Body Model, Human Head and Muscle Anatomical Model for Micro Plastic Face Training, Muscular Facial Surgery

• This model shows the muscles of the head, neck and chest detail. Illustrate the superficial and deep muscles as much as possible, and make the design of the detailed anatomy in the subclavian artery and the internal carotid artery.
• Introduced the anatomical structure, the anatomical, anatomy and clinical connecting the head and neck in detail aspects of the local structure and hierarchy.It involves different anatomical levels, anatomical areas of the muscles of the head and neck , head and neck lymph nodes, blood supply, fascia, etc.
• The model is realistic, color is bright.The Gully grain is clear at a glance.
• It comes with a digital instruction mark, which is more efficient and faster to use, and also provides insight and practical.
• Suitable for head and neck surgery, neurosurgery, maxillofacial surgeon and related professionals.
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The human body has about 639 muscles. It is composed of about 6 billion muscle fibers, of which the longest muscle fiber is 60 centimeters, and the shortest one is only about 1 millimeter. Large muscles weigh about two kilograms, small ones only a few grams. The average person’s muscles make up about 35 to 45 percent of their body weight.
According to the different structure and function, it can be divided into smooth muscle, cardiac muscle and skeletal muscle, and according to the shape, it can be divided into long muscle, short muscle, flat muscle and orbicularis muscle [2]. Smooth muscle is mainly composed of internal organs and blood vessels, with slow contraction, durable, not easy to fatigue and other characteristics, myocardium constitutes the heart wall, both do not contract with people’s will, so it is called involuntary muscle. Skeletal muscle is distributed in the head, neck, trunk and limbs, usually attached to the bone, skeletal muscle contraction is rapid, powerful, easy to fatigue, can be contracted with people’s will, so called voluntary muscle. Skeletal muscle observed under the microscope is transverse striated, so it is also called striated muscle.
Skeletal muscle is the power part of the movement system, divided into white and red muscle fibers, white muscle rely on rapid chemical reactions to rapidly contract or stretch, red muscle rely on continuous oxygen movement. Under the innervation of the nervous system, the skeletal muscles contract and the traction bones produce movement. Human skeletal muscle has a total of more than 600 pieces, widely distributed, accounting for about 40% of body weight, each skeletal muscle regardless of size, has a certain form, structure, location and auxiliary devices, and has a rich distribution of blood vessels and lymphatic vessels, subject to a certain amount of nerve innervation. Therefore, each skeletal muscle can be considered as an organ.
The head muscle can be divided into two parts: facial muscle (expression muscle) and masticatory muscle. The trunk muscles can be divided into back muscles, chest muscles, abdominal muscles and diaphragm muscles. The lower limb muscles are divided into hip (kuan) muscles, thigh muscles, calf muscles and foot muscles according to their location, all of which are stronger than the upper limb muscles, which is related to supporting weight, maintaining upright posture and walking. The upper limb muscles are divided into shoulder muscles, arm muscles, forearm muscles, hand muscles and neck muscles according to their location.