Paired and midline bones

Question 1

Which midline bones rotate about a transcerse axis?

Answer 1

• occiput
• sphenoid
• ethmoid
• vomer

Question 2

What bones does the vomer articulate with? What drives its motion?

Answer 2

1. sphenoid
2. ethnoid
3. septal cartilage
4. maxillae
5. palatines

Sphenoid drives vomer motion

Question 3

When SBS is in flexion what how does the ethmoid move in relation to the occipiut?

Answer 3

Same direction

Question 4

When SBS is in flexion how does the vomer move in relation to the sphenoid?

Answer 4

Same direction

Question 5

What bones does the parietal bone articulate with?

Answer 5

• ociput
• frontal
• sphenoid
• temporal
• other parietal

Question 6

What is the only bonew that contacts all 4 fontanelles?

Answer 6

Parietal

Question 7

What muscles attach to the temporal bone?

Answer 7

• splenius capitus
• longissimus capitus
• digastric
• SCM
• stylohyoid
• Stylohyoid
• Styloglossus
• Masseter

Question 8

Vault contact?

Answer 8

• index fingers greater wing of sphenoid posterior to the frontozygomatic suture
• middle finger anterior to ear
• ring finger on mastoid process
• pinky finger on occiput
• palms on parietals
• thumbs contact frontal

Question 9

frontal occipital contact?

Answer 9

• posterior contact occiptal hand rests on table cradling head and occiput
• anterior contact frontal hand thumb pads on greater wing inferior to frontozygomatic suture
  
  • index finger or middle on greater wing
  • palms on anterior aspect of frontal bone

Question 10

Becker contact?

Answer 10

• thumbs on greater wing inferior to frontozygomatic suture
• index fingers on mastoid process
• middle to pinky on occiput with middle finger posterior to OM suture
• Palms cup occiput and posterior aspect of parietals

Question 11

Physiologic patterns?

Answer 11

• flexion
• extension
• torsion
• sidebending rotation

Question 12

torsion axis?

Answer 12

• one sagittal axis opposite rotation

Question 13

Torsion finger movement?

Answer 13

• 1st finger and fifth finger of one hand moves superiorly while other moves inferiorly

Question 14

Axes of sidebending rotation?

Answer 14

• one sagittal same direction
• two vertical opposite motion

Question 15

How do fingers move on sidebending rotation?

Answer 15

• named side feels fuller with the 1st finger and 5th move away from each other
• opposite side shrinks

Question 16

Vertical strain axes?

Answer 16

• two parallel transverse axes that rotate in same direction

Question 17

superior vertical strain vs inferior vertical strain finger movement?

Answer 17

• superior rotates anteriorly
  
  • 1st fingers move away fifth fingers move towards dr
• inferior rotates posteriorly
  
  • 1st fingers move toward dr and 5th moves away

Question 18

Lateral strain axes?

Answer 18

• two vertical axes with motion in same direction
• named for where base of sphenoid goes

Question 19

How do fingers move with a lateral strain?

Answer 19

• 1st fingers move opposite 5th and side of strain moves slightly anterior

Question 20

What non physiologic strain mimics other patterns?

Answer 20

Compression

Question 21

Where would trauma occcur to cause a lateral strain?

Answer 21

Anterior or posterior to the SBS

Question 22

Where would trauma occur to cause sidebending rotation?

Answer 22

Directly at the sbs

Question 23

Where would trauma occur to cause vertical strain?

Answer 23

superior or inferior force anterior or posterior to the SBS

Question 24

where would trauma occur to cause a torsion?

Answer 24

rotational force anterior or posterior to the SBS