What are two likely reasons a cl ion cannot pass through a sodium ion channel?

The answers are;

1.Cl- is bigger an size atom compared to K+.  Therefore, Cl does not fit in the active site of the of the ion channel transmembrane protein.

2.Cl- is an anion while K+ is a cation. Cl- therefore does not interact positively with the charges in the channel of the transmembrane protein

answer : haversian

[explanation: -(compact bone is organized as parallel columns, known as haversian systems, which run lengthwise down the axis of long bones. these columns are composed of lamellae, concentric rings of bone, surrounding a central channel, or haversian canal, that contains the nerves, blood vessels, and lymphatic system of the bone)]