How Do You Spell MUSCULUS DELTOIDEUS?

1. The musculus deltoideus, commonly known as the deltoid muscle, is a large, triangular muscle located in the shoulder region. It derives its name from the Greek word "deltoeides", meaning resembling the letter delta (Δ), which represents the triangular shape of the muscle. The deltoid muscle plays a crucial role in the movement and stability of the shoulder joint.

   Originating from three distinct areas, the deltoid muscle arises from the lateral third of the clavicle (collarbone), the acromion process of the scapula (shoulder blade), and the spine of the scapula. The muscle fibers then converge to form a thick tendon, which inserts onto the deltoid tuberosity of the humerus (upper arm bone).

   Functionally, the musculus deltoideus acts as the primary abductor of the shoulder joint, meaning it is responsible for lifting the arm away from the body. It also assists in flexing, extending, and rotating the arm at the shoulder. Additionally, the deltoid muscle helps stabilize the shoulder joint during movements, providing support and preventing dislocation.

   The deltoid muscle receives innervation from the axillary nerve, a branch of the brachial plexus. It is predominantly composed of type II muscle fibers, which enable fast and forceful contractions. The visibleness and well-defined appearance of the deltoid muscle contribute to the aesthetics of the shoulder region, making it a focal point for bodybuilders and athletes. Strengthening and conditioning exercises targeting the deltoid muscle are commonly included in resistance training programs to enhance shoulder stability and improve upper body strength.

2. Origin, outer third of clavicle, outer border of acromion process, lower border of spine of scapula; insertion, outer side of shaft of humerus a little above its middle; nerve supply, circumflex from 5th and 6th cervical through brachial plexus; action, abduction, flexion, extension, and rotation of arm.

   A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.

Common Misspellings for MUSCULUS DELTOIDEUS

The word Musculus Deltoideus comes from Latin and has a simple etymology:

1. Musculus: This Latin word means muscle. It is derived from the Greek word myos (meaning muscle) through the transformation myusculus to musculus.

2. Deltoideus: This Latin word means triangular. It is derived from the shape of the deltoid muscle, which is a large, triangular muscle that covers the shoulder joint.

Therefore, Musculus Deltoideus translates to triangular muscle.