External intercostal muscles
External intercostal muscles are eleven in number on both sides.
origin:
Lower border of ribs.
Insertion :
Upper border of rib below.
Nerve:
intercostal nerves.
Actions:
Inhalation.
Similar Posts
Pronator Quadratus Muscle
Pronator Quadratus Muscle Anatomy The Pronator Quadratus muscle is a small, square-shaped muscle located in the forearm of the human arm. It plays a crucial role in forearm pronation, which is the rotational movement of the forearm that turns the palm of the hand downward or backward. Origin Insertion Nerve supply The anterior interosseous nerve…
The Facial Nerve: Anatomy, Course, Functions, Clinical Importance
Introduction: The Facial Nerve is also known as the 7th Cranial Nerve. It is one of the most important nerve of the body, which connects 21 muscles with the brain. It provides motor and sensory innervation to the muscles of the face. It supplies nerve fibers that control facial movements and facial expressions. Anatomical Course…
Muscle Hypertrophy
What Is Muscle Hypertrophy? Muscle hypertrophy refers to the process of increasing the size of skeletal muscle fibers through the enlargement of individual cells. The process of developing larger skeletal muscles through an increase in the size of their constituent cells is known as muscle hypertrophy or muscle development. Sarcoplasmic hypertrophy, which emphasizes greater muscle…
Teres Minor Muscle
Teres Minor Muscle Anatomy The teres minor is a slim, narrow muscle within the rotator cuff, located in the shoulder. It also contributes to the rotator cuff, a capsule of muscles and tendons that collectively stabilize the glenohumeral joint. Origin It originates from the lateral border and adjacent posterior surface of the scapula. Insertion It…
Masseter Muscle Anatomy
Introduction The masseter is a quadrilateral muscle that covers the lateral surface of the ramus of the mandible. The masseter muscle fibres are arranged in three layers. The masseter muscle is a paired, strong, thick, and rectangular muscle that originates from the zygomatic arch and extends down to the mandibular angle. It contains a superficial…
Sternohyoid muscle
Introduction The sternohyoid muscle is a flat muscle located on both sides of the neck.The sternohyoid muscle is a strap-like infrahyoid muscle that connects the hyoid bone with the clavicle and sternum. Along with the omohyoid muscle, it comprises the superficial plane of infrahyoid muscles, while the sternothyroid and thyrohyoid muscles belong to the deep…
