Obviously this Dr is very intelligente and correct, however, if you are using the A&P Lab Manual 10th Ed (Marieb & Mitchell) the answer you are looking for is: Trapezius (found on the top of page 210)
Sorry .....In my first answer I repeated myself twice and did not finish one of my answers correctly. The muscles that extend the head on the neck are;
Rectus capitis major.
Superior oblique.
Rectus capitis minor.
The muscles that extend the head on the neck are;
Rectus capitis posterior major.
Super oblique.
Rectus capitis posterior major.
Suboccipital
Prevertebral
Anterolateral Neck
Superficial Neck
Anterior Neck
Epicranial
Muscles of Facial Expression
Muscles of Mastication
Extraocular
Laryngeal
Lateral:sternocleidomastoid & scalene
Extension:trapezius
Scalenes,sternocleidomastoid,Traps,splenius capitus
ermmm....a knifee [:
Trapezius
Trapezius
Mastoid Process =)
Trapezius - depends on actice region and stateof other muscles; may (1) elevate, retract, depress or rotate scapula upward, (2) elevate clavicle, or (3) extend neck
Extensor muscles extend or straighten a body part.
Muscles can contract and shorten
i done no
triceps brachii
Hyper extend
The erector spinae
There are four muscles that extend the leg. vastus lateralis, vastus medialis, vastus intermedius and rectus femoris.
Triceps
There are about 30 muscles in the head and kneck.
The heart and the lungs, these are known as involuntary muscles.