Three Types of Muscle

Quiz on the Three Types of Muscles

Spread 2.4.8 in the OCR Biology A2 Student Text Book (pages 234 to 235)

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1. '____________' increases the heart's rate of contraction.

  • Thin actin
  • Sympathetic stimulation
  • Atrial muscle
  • Parasympathetic stimulation
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Other questions in this quiz

2. Which two proteins make up the filaments in muscles?

  • Haemoglobin and Actin
  • Myosin and Actin
  • Meat and Flesh
  • Collagen and Keratin

3. What does 'involuntary muscle' mean?

  • A muscle that leads to the movement of the skeleton at the joints.
  • A muscle that is damaged and involuntarily spasms.
  • A muscle that is not under concious (voluntary) control.
  • A muscle that did not volunteer to be a muscle and is quite frankly upset that it is a muscle.

4. In which of these places is smooth muscle NOT found?

  • At the joints of the arm
  • Iris of the eye
  • Walls of the intestine
  • Wall of aterioles

5. What is an 'intercalated disc'?

  • Abnormally shaped (disc) nuclei
  • Cell membranes in cardiac muscle.
  • A thick cardiac muscle fibre.
  • Obstructions in the bloodstream.

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