下唇的肌肉:功能解剖学,内化模式和神经损伤预防
Lior Har-Shai1, Christine F Johansen, Sahejbir S Bhatia
1Department of Plastic Surgery, The University of Texas Southwestern Medical Center, Dallas, Texas.
Plastic and reconstructive surgery
|January 22, 2026
概括
边缘下神经 (MMn) 的损伤很少影响下唇的位置. 低唇压缩器 (DLI) 主要由部分支化,而平底肌切除术可以防止异常的唇部升高.
科学领域:
- 人体解剖学 解剖学 解剖学
- 神经学 神经学
- 整形外科 整形外科 整形外科
背景情况:
- 下唇压缩器 (DLI),角压缩器 (DAO),头脑肌和平底肌肌对于下唇的位置和口腔功能至关重要.
- 这些肌肉在面部重建和美容手术期间是脆弱的.
- 之前的研究表明,边缘下神经 (MMn) 通过DLI内化对下唇抑郁有显著的贡献,缺乏功能分析.
研究的目的:
- 系统地评估DLI,DAO,头脑肌和脑肌的功能解剖学和内接.
- 评估MMn损伤对下唇位置的影响.
主要方法:
- 对接受选择性神经切除术和肌切除术的成年突触患者进行回顾性队列研究.
- 通过神经分支刺激和肌肉激活模式分类进行手术内面部神经映射.
- 在接受了MMn神经切除术而没有进行平底膜切除术的患者中,下唇位置变化的子分析.
主要成果:
- 达奥和思维肌肉显示出混合的内化模式.
- DLI和平板肌肉主要由部分支化;95.5%的DLI分支是部的.
- 在分分析 (n=24) 中,MMn神经切除并没有恶化下唇位置.
结论:
- 达奥肌,思维肌和平底肌肌是由各种面部神经分支聚内核化.
- DLI主要由宫分支单独内化.
- 孤立的MMn损伤很少会使下唇位置恶化;对DLI的宫分支的损伤可能会导致异常的唇部升高,可通过尾巴平原体肌切除术来预防.
相关概念视频
Spinal Nerves: Anatomy
8.3K
Spinal nerves are pivotal conduits in the nervous system, bridging the central nervous system (CNS) with the peripheral nervous system (PNS). These nerves enable a complex communication network between the brain, spinal cord, and the rest of the body, facilitating sensory input, motor output, and autonomic functions.
There are 31 bilateral pairs of spinal nerves, each emerging from the spinal cord through the intervertebral foramina—openings between adjacent vertebrae. These nerves are...
There are 31 bilateral pairs of spinal nerves, each emerging from the spinal cord through the intervertebral foramina—openings between adjacent vertebrae. These nerves are...
8.3K
Skeletal Muscle Anatomy
92.7K
Skeletal muscle is the most abundant type of muscle in the body. Tendons are the connective tissue that attaches skeletal muscle to bones. Skeletal muscles pull on tendons, which in turn pull on bones to carry out voluntary movements.
92.7K
Cranial Nerves: Overview and Anatomy
4.5K
The cranial nerves are an important part of the complex network of nerves in the human body. These nerves emerge directly from the brain and are responsible for transmitting essential information between the brain and various parts of the head and neck. There are 12 pairs of cranial nerves, systematically numbered using Roman numerals from I to XII, beginning from the anterior and moving to the posterior of the brain. Each cranial nerve is uniquely identified by names that reflect its function...
4.5K
Gross Anatomy of Skeletal Muscles
19.3K
The connective tissues play a significant role in arranging the muscle fibers into a hierarchical structure that forms a complete muscle. Consider a muscle like the bicep brachii, commonly called the bicep. This muscle comprises thousands of muscle fibers enclosed by a protective layer of connective tissue called the endomysium. The endomysium is primarily composed of reticular fibers, a type of thin collagen fiber. It allows the exchange of nutrients and waste products at the fiber level,...
19.3K
Microscopic Anatomy of Skeletal Muscles
22.4K
Skeletal muscle cells, also called muscle fibers, are distinctly elongated, multi-nucleated, slender biological units. They are packed with specialized structures designed to facilitate their primary function, which is contraction.
The muscle sarcolemma is a plasma membrane enclosing each muscle cell that conducts electrical signals called action potentials. The sarcolemma extends into the cell to form T-tubules, ensuring the neural impulses are uniformly distributed across the entire muscle...
The muscle sarcolemma is a plasma membrane enclosing each muscle cell that conducts electrical signals called action potentials. The sarcolemma extends into the cell to form T-tubules, ensuring the neural impulses are uniformly distributed across the entire muscle...
22.4K
Anatomy of the Heart
119.5K
The human heart is made up of three layers of tissue that are surrounded by the pericardium, a membrane that protects and confines the heart. The outermost layer, closest to the pericardium, is the epicardium. The pericardial cavity separates the pericardium from the epicardium. Beneath the epicardium is the myocardium, the middle layer, and the endocardium, the innermost layer. There are four chambers of the heart: the right atrium, the right ventricle, the left atrium, and the left ventricle.
119.5K


