hey can any on eexplain....

[DIASTEMA08]

1.in the intercuspal position,the maxillary posterior teeth oppose
a.facial inclines of facial cusps
b.lingual inclines of facial cusps
c.facial inclines of lingual cusps
d.lingual inclines of lingual cusps

1.a,b.c
2.a,b,d
3.a,c
4.b,c
5.all the above

2.as the teeth are closed in intercuspal position ,the final movemant of the mandible is directed by the
1.height of the free way space
2.strength of the muscle sof mastication
3.cusp fossa relation ship of opposing teeth
4.ligaments that extend from ythe skull to mandible
5.shape of the articular eminnence of the temporo mandibular joint

3.at the same time as the supre hyoid muscles co nteact during swallowing ,a downward displacement of the mandible is prevented by the contraction of the
1.infre hyoid muscle
2.masticatory muscles
3.anterior cervical muscles
4.posterior cervical muscles
5.muscles of facial expression

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[toothfairy21]

1.in the intercuspal position,the maxillary posterior teeth oppose
a.facial inclines of facial cusps
b.lingual inclines of facial cusps
c.facial inclines of lingual cusps
d.lingual inclines of lingual cusps

1.a,b.c
2.a,b,d
3.a,c
4.b,c
5.all the above

2.as the teeth are closed in intercuspal position ,the final movemant of the mandible is directed by the
1.height of the free way space
2.strength of the muscle sof mastication
3.cusp fossa relation ship of opposing teeth
4.ligaments that extend from ythe skull to mandible
5.shape of the articular eminnence of the temporo mandibular joint


3rd question.. plz help

 

[simkarl]

3.at the same time as the supre hyoid muscles co nteact during swallowing ,a downward displacement of the mandible is prevented by the contraction of the
1.infre hyoid muscle
2.masticatory muscles
3.anterior cervical muscles
4.posterior cervical muscles
5.muscles of facial expression