Anatomy of the neck and shoulder

These bones form the top segment of the spine and contain nooks and crannies where nerves pass through from the spinal cord to enervate the upper body arms and hands. The neck triangles are actually spaces bordered by the neck muscles.

The external jugular drains the external face.

Anatomy of the neck and shoulder. This neck-bone possesses a longer spinous process which is visible at the base of the neck as a bump and indicates the end of the neck and beginning of the ribcage. Arm and Shoulder Bones. The upper arm bone called the humerus is connected to the body via the.

Vector silhouette anatomy of neck and shoulder stock illustrations. Nude female shoulders An image of young womans lips chin and shoulders. Focus is set at her lips.

Here are other images of Angela. Shot 1 anatomy of neck and shoulder stock pictures royalty-free photos images. Some of the main muscles of the neck and shoulders are.

Latissimus dorsi which helps to pull the arms back and down as in rowing. Pectorals which work in the opposite way to bring the arms forward. Levator scapulae which stabilise the shoulder blades during other movements.

Sternocleidomastoid which turns the head and pulls it forward. The neck is composed of a series of seven bones that are stacked on top of one another. These bones form the top segment of the spine and contain nooks and crannies where nerves pass through from the spinal cord to enervate the upper body arms and hands.

The shoulder girdle is composed of four bones including two collarbones and two shoulder blades. But dont worry these triangles are not hard to remember and they are very important for understanding neck anatomy. The neck triangles are actually spaces bordered by the neck muscles.

There are two main triangles. The anterior and the posterior triangles of the neck. The anterior triangle of the neck is made by the anterior border of the sternocleidomastoid muscle the inferior border of the.

Levator Scapulae Responsible for movement of the scapula shoulder blade in an upward and downward motion. Rectus Capitis Lateralis Allows the neck to flex from side to side. Obliques Capitis Superior Allows the neck to extend and flex to the side.

Obliques Capitis Inferior Assist with head neck rotation. In basic terms the neck cervical spine joins the shoulders and chest to the head. The neck is one of the most complex and intricate structures in our body and includes the spinal cord which sends messages from the brain to the rest of the body.

The cervical spine is responsible for several crucial roles including protecting the spinal cord. The thyrohyoid is a quadrilateral muscle located in the muscular triangle of the neck. It arises from the oblique line of the lamina of thyroid cartilage and courses superiorly to insert onto the lower border of the greater horn and the adjacent body of hyoid bone.

The shoulder is one of the largest and most complex joints in the body. The shoulder joint is formed where the humerus upper arm bone fits into the scapula shoulder blade like a ball and. Cervical nerves are spinal nerves that arise from the cervical region of the spinal cord.

These nerves conduct motor and sensory information via efferent and afferent fibers respectively to and from the central nervous system. While classified as peripheral nerves the motor cell body resides in the anterior horn of the spinal cord. There are eight pairs of cervical nerves denoted C1 to C8.

In this video part you will also find out the anatomy of the neck and shoulders. The neck bones are called the cervical vertebrae. There are seven of them.

The first one that holds the skull is called the atlas. The column of the neck bones is slightly curved. The first pair of ribs resembles an oval and its size defines the neck width at its base.

The fan-shaped trapezius muscles extend from the back of the skull down to the middle of the back along the spine and fan over into the shoulders. These muscles give the sides of the neck their. More commonly known as the shoulder blade the scapula is a flat triangular bone located in the upper back.

It connects with the collarbone at the front of the body. Major Neck Muscles Levator Scalpulae connects the topback of the shoulderblade to the skull Sternocleidomastoid primary superficial muscles connects the top of the sternum to the mastoid process of the temporal skull side of skull. Shoulder Labrum.

The labrum is a rim of cartilage that surrounds the socket of the shoulder joint. The socket of the shoulder joint is shallow and the labrum gives the socket more depth and thus more stability. The labrum also serves as the attachment of a.

The neck muscles including the sternocleidomastoid and the trapezius are responsible for the gross motor movement in the muscular system of the head and neck. They move the head in every direction pulling the skull and jaw towards the shoulders spine and scapula. The function of the shoulder girdle requires an optimal and.

Integrated motion of several joints. In fact five joints of impor-tance to shoulder function can be distinguished. 1 glenohumeral joint 1The acromioclavicular joint 2The sternoclavicular joint 3The.

The Brachial Plexus The brachial plexus is the source of almost all the nerves that innervate the upper limb arm and shoulder. It lies in the neck and armpit axilla and involves nerve fibers from C4 -T2. These give rise to the axillary nerve musculocutaneous nerve median nerve ulnar nerve and radial nerve and a few others.

The scapula is the blade-like structure found a few inches away from your spine. This bone supports most of the shoulder motion. The clavicle or collarbone connects your arm to your chest.

The clavicle looks like a pair of bicycle handles along the collar area a few inches down the neck. The jugular veins are the major veins of the neck. The internal jugular vein is a continuation of the sigmoid sinus.

It courses inferiorly within the carotid sheath collecting tributaries in the neck. It merges with the subclavian vein at the base of the neck to form the brachiocephalic vein. The external jugular drains the external face.

It descends from the angle of the mandible within the superficial fascia.