Test 4
16. The ciliary body:
a. is triangular in cross section and its posterior surface is known as 
    the pars plana 

b. is triangular in cross section and its apex faces anteriorly towards 
    the scleral spur 

c.  is wider temporally than nasally 

d. has a base that is ridged and forms ciliary processes that support 
    the lens 

e. is the site of surgical access to the anterior chamber via the pars 


17. When viewed microscopically:

a. the ciliary epithelium consists of 2 layers, separated in some 
    places by small ciliary channels 

b. the 2 cell layers of the ciliary epithelium have differing 

c. the inner cell layer of the ciliary epithelium is responsible for the 
    majority of aqueous humor production 

d. the ciliary stroma consists of bundles of loose connective tissue 
    interwoven with numerous blood vessels 

e. the ciliary stroma extends into the ciliary processes that have an 
    arterio-venous core 


18. The ciliary muscle:
a. consists of 2 muscle groups 

b. is innervated by postganglionic parasympathetic fibres from the 
    trigeminal nerve 

c. is innervated by postganglionic sympathetic fibres from the 
    oculomotor nerve 

d. on contraction, aids accommodation by moving the ciliary muscle 
    forward and inward via its circular and longitudinal fibres

e. is attached to the scleral spur 


19. The trabecular meshwork:
a.  corresponds on the surface of the globe to the corneoscleral 

b. has as its anterior border Schwalbe’s line, a continuation of 
    Bowman’s membrane 

c. is square in cross section 

d. is not in direct communication with the Sinus Venosus Sclerae 

e. consists of branching laminae whose pores progressively decrease 
    in size towards the canal of Schlemm 


20. Schlemm’s canal:
a. runs in a continuous circle at the corneoscleral limbus 

b. is related posteriorly to the scleral spur 

c.  is drained by 25-30 collector channels that join the deep scleral 
    plexus, then the intrascleral plexus 

d. collects aqueous humor that can drain via aqueous veins that join 
    the conjunctival veins directly 

e. is oval or triangular in cross-section 

To test 5
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