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
Levator Scapulae Muscle
Levator Scapulae Muscle Anatomy The levator scapulae muscle is a long muscle of the shoulder girdle. It is situated at the back and the side of the neck, and as its name suggests – its main function is to lift the scapula. The position of the muscle defines its supportive role in the vertebral column….
Inferior Pharyngeal Constrictor Muscle
Inferior Pharyngeal Constrictor Muscle Anatomy The Inferior pharyngeal constrictor, the thickest of all three constrictors, arises from the sides of the cricoid and thyroid cartilage. Similar to the superior and middle pharyngeal constrictor muscles, This Muscle Nerve supply is the vagus nerve (cranial nerve X), specifically, by branches from the pharyngeal plexus and by neuronal…
Tidal Volume
What is a Tidal Volume? Tidal volume refers to the volume of air that is inspired or expired with each breath during normal, quiet breathing. In other words, it represents the amount of air that moves in and out of the lungs during a single breath cycle, without any additional effort or forceful inhalation or…
Muscle of medial compartment of the thigh
Introduction The hip adductors are a group of muscles located in the medial compartment of the thigh. These muscles include the adductor longus, adductor brevis, adductor Magnus, gracilis, and pectineus. Due to their position, the hip adductors shape the surface anatomy of the medial side thigh. More specifically, these muscles extend from the anteroinferior external…
Extensor carpi radialis longus muscle
Extensor carpi radialis longus Muscle Anatoy The extensor carpi radialis longus muscle is one of the five main muscles that control movements at the wrist. This muscle is quite long, starting on the lateral side of the humerus, and attaching to the base of the second metacarpal bone. Origin: It originates from the lateral supracondylar…
Anconeus Muscle
Anconeus Muscle Anatomy The anconeus muscle is a small, triangular muscle located at the elbow. It is located at the posterior aspect of the elbow, extending from the distal humerus to the proximal ulna. It assists in the extension of the forearm and provides support for both the dorsal capsule of the humeroulnar joint and…