WEEK 3: Suboccipital Triangle

Question 1

Where does the roof normally start

Answer 1

Skin, superficial and deep fascia

Question 2

Layers of muscles that are that are above the occipital triangle?

Answer 2

Trapezius
Splenius capitis
semispinalis capitis

Question 3

Muscles associated with occipital triangle?

Answer 3

Medially - Rectus capitis posterior major and minor

Superolaterally - obliques capitis superior

Interolaterally - Obliquus capitis inferior

Question 4

Which muscle apart of the suboccipital triangle is not attached to the head?

Answer 4

Obliquus capitis inferior

Question 5

Where does Obliquus capitis inferior Originate and Insert?

Answer 5

Origin - SP C2
Insertion - TP C1

Question 6

Rectus Capitis Posterior Minor

Answer 6

Origin - posterior tubercle of the posterior arch of C1
Insertion - medial aspect of inferior nuchal line of occipital bone
Innervation - suboccipital nerve (dorsal ramus C1)
Action - extension of the head at anti-occipital joint

Question 7

Rectus Capitis Posterior Major

Answer 7

origin - spinous process C2

insertion - lateral aspect of inferior nuchal line of occipital bone

innervation - suboccipital nerve /9dorsal ramus C1

Action - extension and ipsilateral of the head at antlantoaxial joint