The retina is located

1.   ?    at the posterior of the eyeball
2.   ?    between the anterior and posterior chambers
3.   ?    immediately posterior to the anterior chamber
4.   ?    at the anterior most part of the eyeball

The retina is part of the

1.   ?    neural tunic
2.   ?    vascular tunic
3.   ?    muscular tunic
   
4.   ?    fibrous tunic

Which of the following are responsible for regulating pupil size?

1.   ?    Dilators and constrictors
2.   ?    Inferiors and superiors
3.   ?    Recti and obliques
4.   ?    Orbicularis oculi and levator palpebrae superiori

The anterior, transparent part of the fibrous tunic is the

1.   ?    cornea
2.   ?    lens
3.   ?    sclera
4.   ?    iris

The thick, gel-like substance that aids in maintaining the shape of the eye is

1.   ?    the vitreous humor
2.   ?    the aqueous humor
3.   ?    the lacrimal fluid
4.   ?    the sebaceous secretions