Answer Happy

In bone and cartilage, a small space that contains an individual cell is called a/an: matrix element. lucuna. lamellae. osteon. Haversian canal.
Each of the following statements concerning the muscularis externa of the alimentary canal is true, EXCEPT: O its muscle contractions produce peristalsis. O its contraction moves the contents along the tract. O the myenteric nerve plexus is present between muscle layers. circular muscles form sphincters along the tract. O it usually consists of three layers.