Class II

How many types of muscles are there in the human body?
  1. One (skeletal)
  2. Two (skeletal and smooth)
  3. Three (cardiac, skeletal, smooth)
  4. Four (cardiac, skeletal, smooth, stripy)
Which parts of the human body contain the ring-like muscles called sphincters?
  1. Anus and urinary tract
  2. Mouth and eye
  3. Stomach
  4. All of the above
Humans pass gas that is created by bacteria in the colon as well as swallowing air. What is considered an average number of times to pass gas?
  1. 2-5 times a day
  2. 10-20 per day
  3. 40-50 times per day
  4. 52-65 per day
In which parts of the body are cells not replaced when they die?
  1. Kidneys
  2. Muscles
  3. Skin
  4. Brain
What are teeth made of?
  1. Bone
  2. Dentine
  3. Keratin
  4. Dentine and enamel
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