Introduction The diaphragm is an unpaired, dome-shaped skeletal muscle that is located inside the trunk. It is the primary muscle that is active in inspiration. Contraction of the diaphragm muscle facilitates the expansion of the thoracic cavity. This increases the volume of the cavity, which in turn reduced the intrathoracic pressure allowing the lungs to…
Introduction The abdominal muscles are the muscles forming the abdominal walls, the abdomen being the part of the trunk connecting the thorax and pelvis. An abdominal wall is formed by the skin, fascia, and muscle and encases the abdominal cavity and viscera. The abdominal muscles help to support the trunk, allow movement, hold organs in…
The muscles of the Back are divided into three-layer – The superficial layer, the intermediate layer, and the Deepest layer the muscles. Superficial muscles of the back :The superficial back muscles are the muscles found just below the skin. Within this group of back muscles, you will find the latissimus dorsi, the trapezius, levator scapulae,…
Pectoralis Major Muscle Anatomy The pectoralis major is a prominent muscle located in the chest region of the human body. It is a large, fan-shaped muscle that plays a crucial role in the movement of the shoulder and arm. If you enjoy working out, you may also hear people refer to these muscles as the…
Iliococcygeus Muscle Anatomy The levator ani muscle, which makes up the majority of the pelvic diaphragm, is composed of three muscles, including the iliococcygeus muscle. The flat, broad skeletal muscle is known as the iliococcygeus. the inner side of the ischium (the lower and back part of the hip bone) and from the posterior part…
Internal oblique muscle is a thin, broad muscle in the lateral abdominal wall that is located below the external oblique and just above the transverse abdominal muscles. Starting from the superficial layer to the deep layer, the external oblique, internal oblique and transversus abdominis make up the three layers of the lateral abdominal wall. Internal…
The external oblique is the largest and the most superficial (outermost) of the three flat muscles of the lateral anterior abdomen. Structure: It arises from eight fleshy digitations, each from the external surfaces and inferior borders of the fifth to twelfth ribs. These digitations are arranged in an oblique line that runs inferiorly and anteriorly,…
Cremaster muscle is a muscle that covers the testis and the spermatic cord. It is a paired muscle, being one on each side of the body. The cremaster muscle develops to its full extent only in males while in females it is represented by only a few muscle loops. In female humans, the cremaster muscle…
What is Rectus abdominal muscle? The rectus abdominis muscle also called the “abdominal muscle” or sometimes the “abs muscles”, is a paired straight muscle located at the front side of the abdominal area. The Rectus abdominis muscle is two parallel muscles, which are separated by the linea alba (midline band of connective tissue). The rectus…
Transverse abdominal Muscle Anatomy The transverse abdominal muscle, often referred to as the TVA, is a crucial component of the core that lies beneath the rectus abdominis and obliques. a muscle layer of the anterior and lateral (front and side) abdominal wall which is deep to (layered below) the internal oblique muscle. It is thought…
