The Skull

Question 1

Bony Landmarks Ethmoid Bone

Answer 1

• middle nasal conchae
• superior nasal conchae (can’t see it)
• Crista galli (ridge)
• Cribiform plates (either side of ridge)

Question 2

Frontal Bone Landmarks

Answer 2

-supraorbital ridge

Question 3

Temporal Bone Landmarks

Answer 3

-mastoid process (attachment point for sternocleidomastoid muscle (for flexion of neck)
styloid process(anchor point for tongue and larynx muscles)

Question 4

Spenoid Bone landmarks

Answer 4

-sella turcica (pituitary sits there)

Question 5

Occipital Bone landmarks

Answer 5

• external occipital protuberance ( anchor for ligmanetum nuchae and trapezius)
• occipital condyles(articulate with atlas through atlantooccipital joint )”yes” movement

Question 6

Function of Eye Muscles:

1. superior rectus
2. inferior rectus
3. medial rectus
4. lateral rectus

Answer 6

1. elevates eye
2. depresses eye
3. adduction
4. abduction

Question 7

Functions of Eye Muscles:

1. Superior Oblique
2. Inferior Oblique

Answer 7

1. intorsion and depression

2. extorsion and elevation