Accessory Muscles of the Vertebral Column

Question 1

At what locations will interspinalis be absent along the spine?

Answer 1

T3-T4 down to T10-T11

Question 2

Based on the density of muscle spindles what is the proposed function of the interspinalis?

Answer 2

acts as a proprioceptive transducer in conjunction with intertransversarii to coordinate the smooth movement of the spine and to maintain appropriate posture