Back Of The Neck

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From the sloping platform of the shoulders the neck rises. It is buttressed on the sides by the trapezius (table) muscle. The table shape of this muscle appears only from the back, a diamond with lower apex well down the back. Its lateral corners arise from the shoulder girdle opposite the deltoid. Rising diagonally upward it braces the back of the head.

The strength of the neck is therefore at the back, which is somewhat flat and overhung by the base of the skull.

Skull And Neck Anatomy DrawingAnatomical Landmarks Head And Neck

Muscles of the Neck

1 Sterno-cleido-mastoid

2 Levator scapulae

3 Trapezius

Draw Neck AnatomyMuscles Neck Shoulder Drawing

Muscles of the Neck

Sterno-cleido-mastoid: From top of sternum and sternal end of clavicle to mastoid process (back of ear). Action: Together, pull head forward; separately, rotates to opposite side, depresses head.

Levator Scapulae: From upper cervical vertebrae to upper angle of shoulder blade. Action: Raises angle of shoulder blade.

Trapezius: From occipital bone, nape ligament and spine as far as twelfth dorsal, to clavicle, acromion and ridge of shoulder blade. Action: Extends head, elevates shoulder and rotates shoulder blade.

Muscles of the Neck

Platysma Myoides: A sheathing from chest and shoulder to masseter and corner of mouth. Action: Wrinkles skin of neck, draws down corner of mouth.

Digastric (double-bellied muscle): Anterior belly, from maxilla, behind chin; posterior belly, from mastoid process; fastened by loop to hyoid bone. Action: Raises hyoid and tongue.

Mylo-hyoid: Forms floor of mouth and canopy of chin in front.

Stylo-hyoid: From hyoid to styloid process. Action: Draws back hyoid and tongue.

Sterno-hyoid: From sternum to hyoid bone. Action: Depresses hyoid and Adam's apple.

Omo-hyoid: From hyoid bone to shoulder, upper border of scapula. Action: Draws hyoid down and to one side.

Adam Apple Hyoid Bone Skull And Hyoid And Tongue Canis

Tongue Bone and Larynx

1 Hyoid bone

2 Thyroid cartilage

3 Thyroid gland muscles

4 Digastric (has two portions)

5 Stylo-hyoid

6 Sterno-hyoid

7 Omo-hyoid

8 Sterno-cleido-mastoid

9 Trapezius

Anatomical Drawings Shoulder Cartilage

Movements of the Neck

Neck Movement Anatomy

In the neck are seven vertebras, each moving a little. When the neck is turned to one side, that side of each vertebra moves back as far as the perpendicular and then the opposite sides move forward, lengthening the neck as they do so. This motion is much freer at the second joint from the skull, which turns on a pivot. The joint of the skull itself moves only in nodding, in which the rest of the neck may be quite stationary.

1 For safety as well as to see and to hear, the head and shoulders must be able to turn in all directions.

2 The head is a lever of the first order.

3 The muscles that move the atlas.

Trachea Moving Forward

1 The inferior maxillary or lower jaw bone

2 The hyoid or tongue bone

3 The thyroid cartilage or Adam's apple

4 Trachea or wind pipe

1 The canopy under the chin

2 The sterno-cleido-mastoid

3 Attachment to clavicle and the attachment to the sternum of the sterno-cleido-mastoid muscle, the attachment of this muscle above is directly back of the ear

Muscle Above The EarSpine Anatomy

1 The neck in shape is a rounded

cylinder that follows the direction of the spine

1 The column of the neck curves slightly forward even when the head is thrown back

2 Adam's apple

3 Pit of the neck

1 The mentum or chin

2 Cervical vertebrae

3 First rib

4 Clavicle or collarbone

Sterno Cleido Mastoid

1 Sterno-cleido-mastoid

2 Showing its attachment to the clavicle

3 And to the sternum

1 The column of the neck curves slightly forward even when the head is thrown back

2 Adam's apple

3 Pit of the neck

1 The mentum or chin

2 Cervical vertebrae

3 First rib

4 Clavicle or collarbone

1 Sterno-cleido-mastoid

2 Showing its attachment to the clavicle

3 And to the sternum

Anatomical Facial Muscles And Neck

VIII

1 Sterno-cleido-mastoid muscle

2 The trapezius; to the skull at the curved line of the occipital bone; its fibres are carried obliquely downward and outward

3 The seventh cervical vertebra, a prominent projection at the back of the neck

Sterno Cleido Mastoid

The sterno-cleido-mastoid turns the head from side to side towards the shoulder when both muscles act together; they depress the face downward.

Anatomical Facial Muscles And Neck

The region at the back of the neck is somewhat flattened and much shorter than in front. The head represents the weight to be moved; the muscles, the power to make the movement of the head upon the neck possible.

Which Muscles Move The Lower Jaw Forward

Side View of the Neck

1 The lower jaw

2 The larynx or Adam's apple

3 The sterno-cleido-mastoid (sternum,.

the breastbone)

4 The clavicle, collarbone

5 The sternum, breastbone

Neck Muscular Anatomical StructuresAnatomy The Jaw Bone Mouth And Throat

Throat Muscles

1 Digastric

2 Hyoid bone

3 Omo-hyoid, passes through pulley

Neck from the Back

1 The sterno-cleido-mastoid

2 The splenius capitis

3 The levator scapulae (shoulder blade)

Joint Levers Splenius Capitis

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