Class XI

At the base of skull, a large hole is present which allows brain to continue with the spinal cord. That hole is called :
  1. Vertebral foramen
  2. Foramen ovale
  3. Foramen magnum
  4. Obturator foramen
Which of the following is not a part of hip bone?
  1. Ilium
  2. tibia
  3. Ischium
  4. Pubis
Muscles are attached to bones via :
  1. Joints
  2. Screw
  3. tendon
  4. Ligament
Read the following statements about muscle contraction in humans : i. chemical energy is converted into mechanical energy during muscle contraction and the chemical is a neurotransmitter. ii. a neurotransmitter acetylcholine at motor end plate converts electrical energy into mechanical energy. iii. in a contracted muscle, volume remains the same. iv. a contracted muscle becomes shorter and thicker.
  1. only i), iii) and iv) are correct.
  2. only ii), iii) and iv) are correct.
  3. only iv) is correct.
  4. onlyi) and iv) are correct.
Which of the following is not a part ofcoxal bone?
  1. ilium
  2. ischium
  3. Acromion
  4. pubis
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