a. substance P

b. tumour necrosis factor

c. interleukin-1

d. leukotriene

e. adrenaline

Answera.T   b.T   c.T   d.T   e.F
Increased permeability of vascular tissue can be caused by:
histamine
bradykinin
substance P
interleukin-1
leukotriene
tumour necrosis factor
gamma interferon

2. The followings are true about basal cell carcinoma:

a. affecting the upper lid more commonly than the lower lids

b. palisading of the peripheral cells 

c. does not invade the bone

d. it arises from the dermis

e. it is common in patients on immunosuppressant treatment.

Answera.F   b.T   c.F   d.F   e.T
Basal cell carcinoma is commoner in the lower than upper lid. Untreated cases can invade deep structures including the bone. The tumour arises from the epidermis.
 

a. are found only in the peripheral nervous system

b. do not regenerate

c. each Schwann cells can form myelin around more than one 
    neurone

d. are derived from the ectoderm

e. are found more often in axons with a smaller than larger 
    diameter

Answera.T   b.F   c.F   d.T   e.F
Schwann cells are found in the peripheral nervous system.
Regeneration is common following injury
Unlike oligodendrocytes which can wrap around more than one axon. Each Schwann cell forms myelin around only one neurone.
Axons of smaller diameter than not to be myelinated.

4. BCG:

a. is a live vaccine

b. is derived from Mycobacteria bovis

c. should be avoided in immunocompromised patients

d. is given orally

e. is usually given at neonates in the UK

Answera.T   b.T   c.T   d.F   e.F
In the UK, BCG is usually given to school children by intracutaneous injection.
 

a. is a synthetic antibiotic

b. is a glycopeptide

c. has a high level of activity against staphylococci

d. can cause deafness if given intravenously

e. causes 'red man syndrome' if given by rapid intravenous 
    injection

Answera.F   b.T   c.T   d.T   e.T
It is derived from streptomyces. 
Its serum level needs monitoring if given intravenously as it can cause renal damage and deafness.

 

More MCQs