Human muscles are divided into striated, smooth, and cardiac types. Skeletal muscles work voluntarily for movement, posture, and balance. Smooth muscle is involuntary and found in blood vessels and organs. Cardiac muscle forms heart and is involuntary
The larynx is a triangular-shaped organ located in the upper neck. It consists of nine cartilages, including three single and three paired ones. The laryngeal inlet is about 4-5 centimeters in diameter. It is situated at the level of cervical vertebrae C3-C6
Skeletal muscle enables movement and maintains posture, joining to bones via tendons. Smooth muscle is involuntary and found in digestive and urinary systems. Cardiac muscle is self-excitatory and found only in the heart
Widest muscle in human body, covering most posterior back muscles except trapezius. Originates from thoracic vertebrae, ribs, iliac crest, and inferior scapula. Fibers converge to proximal humerus, inserting between pectoralis major and teres major
Pectoralis major is a fan-shaped muscle located on anterior thoracic cage. Divided into clavicular, sternocostal and abdominal parts. All parts converge laterally and insert onto humerus' greater tubercle
Muscle tissue is composed of specialized cells capable of contracting for movement. Muscle cells have four main properties: excitability, contractibility, extensibility, and elasticity. Muscle tissue produces force, supports body, maintains temperature, and provides form