Neck triangles anatomy

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The Anterior and Posterior Triangles of the Neck

Anterior Triangle of the Neck

BONY SKELETON OF THE NECK <ul><li>Like other regions of the body, the neck has a central bony skeletal core upon which oth...

<ul><li>Below the base of the skull, you will find the vertebral column. The top vertebrae (7 cervical) provide support fo...

<ul><li>The first cervical vertebra is the atlas and is considered an atypical cervical vertebra because it has no body or...

<ul><li>The axis is the second cervical vertebra. This vertebral is also called an atypical vertebra because it has an upw...

<ul><li>The 3rd, 4th, 5th, and 6th cervical vertebrae are known as the typical cervical vertebrae because they all have th...

<ul><li>The 7th cervical vertebra starts to pick up characteristics of the upper thoracic vertebrae. </li></ul><ul><li>Di...

Anterior Neck <ul><li>Common carotid artery (cc) </li></ul><ul><li>Internal carotid artery (ic) </li></ul><ul><li>Extern...

<ul><li>Superficial structures from the lateral view of the neck. </li></ul><ul><ul><li>sternomastoid </li></ul></ul><ul...

<ul><li>Abnormalities of the superficial neck </li></ul><ul><ul><li>Swollen lymph nodes – sign of an infection in an area ...

Anterior Triangle of the Neck In Detail <ul><li>Anterior Triangle </li></ul><ul><ul><li>submental (smen) </li></ul></ul><...

Triangles within the Anterior Triangle of the Neck

The Submandibular Triangle <ul><li>Boundaries </li></ul><ul><ul><li>mastoid & mandible above </li></ul></ul><ul><ul><li...

<ul><li>The superficial (roof) structures of the submandibular region are: </li></ul><ul><ul><li>platysma </li></ul><...

<ul><li>Removal of the superficial structures displays the submandibular salivary gland itself. </li></ul>

<ul><li>contents of the submandibular triangle are structures passing through: </li></ul><ul><ul><li>facial artery (fa) ...

The Submental Triangle <ul><li>located between the two anterior digastric muscles (abd). </li></ul><ul><li>Structures </...

The Carotid Triangle <ul><li>The boundaries of the carotid triangle are: </li></ul><ul><ul><li>posterior belly of digastr...

Roof of the Carotid Triangle <ul><li>The first layer, under the skin and superficial fascia includes the platysma, which f...

Veins of the Carotid Triangle <ul><li>With the roof removed, here are the boundaries of the carotid triangle and the super...

Nerves within the Carotid Triangle <ul><li>The nerves that enter the carotid triangle and that lie superficial to the inte...

Nerves within the Carotid Triangle

Reflection of sternomastoid and removal of common facial vein <ul><li>cca -common carotid artery eca -external carotid ...

Arteries in the Carotid Triangle

Floor of the carotid triangle <ul><li>The floor is the the deepest aspect of the carotid triangle. </li></ul><ul><li>Th...

Muscular or Visceral Triangle <ul><li>The muscular triangle has the following boundaries: </li></ul><ul><ul><li>mid line ...

Thyroid gland and its arterial supply <ul><li>When the strap muscles are reflected, you can see the thyroid gland (tg) ...

<ul><li>If the thyroid gland is reflected laterally, the structures making up the larynx and trachea are seen: </li></ul>...

Anterior View of Thyroid Gland <ul><li>The thyroid gland is hidden under the sternohyoid and sternothyroid muscles and c...

Deep Surface of Thyroid Gland <ul><li>Four small reddish-brown pea-sized glands may be seen on the deep surface of the t...

Clinical Considerations <ul><li>The cricothyroid ligament and membrane are frequently pierced in emergency situations to o...

Structures Found At the Root of the Neck <ul><li>After the sternoclavicular joint is disarticulated the structures located...

<ul><li>Most anterior structures: </li></ul><ul><li>brachiocephalic vein </li></ul><ul><li>vertebral vein </li></ul><ul...

<ul><li>The next layer can be considered the artery-nerve layer: </li></ul><ul><li>lung </li></ul><ul><li>vagus nerve...

<ul><li>The upper lobe of the lung (1) extends into the neck region. This is clinically important for anyone entering this...

<ul><li>The posterior part of the root of the neck is made up of the anterior surface of the body of the 1st thoracic vert...

Table of Muscles Muscle Origin Insertion Action Nerve Supply Sternohyoid sternum hyoid ansa Omohyoid Suprascapular notch h...

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