Tetanus is caused by potentially deadly
a) virus
b) fungi
c) protists
d) bacteria
Which of the following bacterial strain causes tetanus?
a) Salmonella typhae
b) E. coli
c) Clostridium tetni
d) streptococcus pneumonae
Explanation: Clostridium tetani is a common soil bacterium and the causative agent of tetanus. Vegetative cells of Clostridium tetani are usually rod-shaped and up to 2.5 μm long.
Spores of Clostridium tetni found in……
a) water
b) air
c) soil
d) food
Spores of C.tetni may remain inactive in soil but remain infectious for more than ……years.
a) 20
b) 35
c) 40
d) 5
Explanation: when enter the body, they germinate again and produce poison called tetnospasmin
How the poison tetnospasmin cause severe muscle spasm?
a) block the nerve impulse from brain to muscles
b) block the nerve impulse from brain to bones
c) block the nerve impulse from spinal cord to muscles
d) block the blood supply to muscles
Which of the following may occur/s due to the muscular spasm by tetnospasmin produced by C. tetni?
a) fracture of spine
b) tear muscle
c) both a and b
d) none of these
Explanation: Tetanospasmin is a neurotoxin that inhibits the release of γ-aminobutyric acid (GABA) and results in a variety of clinical signs commonly associated with tetanus including muscle spasms
