NECK MUSCLES ANATOMY

As you may know that it is the area of the body between the torso and head. The neck does not have any external bone structures that protect it and is therefore very mobile. Neck mobility is required primarily to move the head around and ensure that the head is upright. This is an extremely vital task performed not just by bones but also by muscles in the neck. We’ll talk about them.

NECK MUSCLES ANATOMY

The neck muscles are separated into three major groups, each of which is related to their depth area of operation:

  • The neck muscles are of the surface layer;
  • Neck muscles from the middle layer
  • Deep neck muscles.

To create a more sculpted body the muscles of the neck play special importance. They shape how the neck appears region of the body. It is evident when it contracts. They include the first to be mentioned, the superficial muscles, and a few muscles in the mid-layer. In this article, we’re going to examine these muscles.

The Muscles of the Superficial Layer

Platysma Muscle

It is a large muscle of the neck which covers the entire neck as the collar. The platysma muscle subcutaneous in the neck (platysma) extends from the chin down to the region of the pectoral. Modern anatomists often refer to these muscles to neck muscles that are facial since the fibers in them are interwoven into the skin of the lower part of the lower jaw’s body. So, when strained the subcutaneous muscle of the neck produces an iconic facial expression, with facial skin that is tense and the downward corners of the mouth.

The muscle originates from the fascia superficial of the chest, just below the clavicle.

 

The Sternocleidomastoid Muscle

The muscle is also part of the superficial muscles, however, it’s distinct from the wide and thin subcutaneous muscle. The sternocleidomastoid muscles are a huge, robust paired bundle that begins at the clavicle and sternum and is attached to the mastoid system of the skull. The muscle is situated just below the platysma.

 

If a person is not carrying excess body weight or conditions that alter the shape of the neck, this muscle is can be seen clearly through the skin as you turn the head.

 

The Muscles of the Middle Layer

Middle layer muscles are divided into two groups based on their position. The first is located over the hyoid bones, and the other is located below the hyoid bones. We will focus just on a few muscles in this group, which are essential for plastic anatomy.

Digastric Muscle

It’s a unique muscle that appears to be an obtuse notch connecting the anterior portion of the mandible with the space between the styloid as well as the mastoid process in the skull. Actually, it’s made up of two pieces one of which originates from the digastric fossa on the lower jaw, while the other one is located inside the mastoid bone. Both are connected with the bone hyoid.

Mylohyoid Muscle

The mylohyoid muscle is shaped like a broad plate which is located behind the digastric muscles. The muscle begins at the maxillary-hyoid line in the lower jaw. It then attaches to the hyoid bone. Like other muscles of this group mylohyoid muscle, it raises the bone hyoid. The mylohyoid muscle is responsible for the lower jaws.

Muscles Located Below the Hyoid Bone

The muscles are larger and longer than the muscles below the hyoid bones. The muscles beneath the hyoid bone comprise the omohyoid muscles, sternohyoid muscle, sternothyroid muscle, and thyrohyoid muscular.

Two muscles will be examined that are crucial to topography and plastic anatomy.

Omohyoid Muscle

It is a muscle fiber that extends through the hyoid bone until the top of the scapula. The omohyoid muscle splits the neck into various regions in the shape of triangles. This can be a great basis for studying different anatomical structures of the neck.

Sternohyoid Muscle

It is the largest of the remaining three muscles in the middle layer, below the hyoid bones. The sternohyoid muscles are situated close to the trachea and connect the manubrium of the sternum and the hyoid bony. The purpose of this particular muscle just like other muscles in the group is to lower the hyoid bone.

 

Neck Borders

The upper edge of your neck is drawn from the point of the lower jaw up to the mastoid bone, and then through an occipital nuchal bone’s superior line, and finally to the protuberance of the occipital external.

The lower edge of the neck can be traced from the manubrium in the sternum, to higher clavicle edges and following the acromions until the seventh cervical vertebra’s spinous processes.

 

Neck Regions

The anterior part of the neck is bounded to the top by the part that runs down the jaw. The lower one is bordered below by the sternum’s handle and, laterally, by the sides of the sternocleidomastoid muscle. The anterior region is an unpaired area.

The lateral part in the neck region is joined and each region is bordered on the front by the margin in the rear of the sternocleidomastoid muscles in the back by the anterior border of the trapezius muscles, and beneath by the clavicle. The border on the upper side is not present because the trapezius and sternocleidomastoid muscles make up an acute angle.

The sternocleidomastoid area is akin to the sternocleidomastoid muscles.

This region of the back is bound to the upper part by the superior nuchal line in the occiput and down below, by a conditional line that runs through the acromions of the scapula as well as the spinal process that forms the seventh cervical vertebra. laterally by the lateral sides that connect the muscles in the trapezius. The neck’s back is an area that is not paired.

 

Triangles of the Neck

The submandibular triangular area is bordered by the two parts of the digastric muscles and also by the lower part of the lower jaw.

The anterior neck triangle is separated by the edges of the anterior part of the sternocleidomastoid muscle and the lower part of the lower jaw.

The anterior triangle is bordered by the rear edge of the sternocleidomastoid muscles as well as the edge that is anterior to the trapezius muscle, and the clavicle

The carotid triangle is bordered by the front edge of the sternocleidomastoid muscles and the posterior portion of the digastric muscle, and the superior edge of the omohyoid muscles.

The midclavicular triangular triangle is bound by the clavicle, Omohyoid muscle, as well as the posterior end of the sternocleidomastoid muscular.

The muscle trapezoid triangle is bordered by the trapezius muscle the sternocleidomastoid muscular structure, and the omohyoid muscular.

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