Test 22 (miscellaneous modified past questions)
1. The penetration of drug through the blood-ocular barrier is increased by:
a. high lipid solubility of the drugs

b. bolus administration of the drug

c. drugs with high affinity for the plasma proteins

d. ocular inflammation

e. increased sympathetic tone of the blood vessels

2. The following antibiotics inhibit protein synthesis by binding to the ribosomes:
a. rifampicin

b. ciprofloxacin

c. chloramphenicol

d. teicoplanin

e. tetracycline


3. Chemicals used as preservatives include:
a. povidone-iodine

b. chlorhexidine

c. thimerosal

d. sodium benzoic acid

e. alcohol

4. TB (mycobacteria tuberculosis):

a. is a Gram negative bacillus

b. forms spores which are resistant to drying

c. may exist as a commensal in the conjunctiva

d. can only be spread through the pulmonary route

e. grows readily on blood agar


5. The spinal cord:
a. terminates at the 12th thoracic vertebrae

b. the fibres that transmit pain decussate at the spinal cord 

c. has a proportionately larger grey matter at the thoracic than the cervical 

d. contains lateral horn that gives rise to preganglionic autonomic nerve fibres

e. contains nucleus proprious which have the cell bodies of secondary 
    neurones subserving touch, pain and temperature.


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