Which is how to stretch the flexor digitorum longus?

Which of the following can benefit most from intermittent use of noninvasive ventilation?

a. A patient with muscular dystrophy b. A patient with pulmonary edema c. A high cervical spine injury patient d. A chronic obstructive pulmonary disease patient in respiratory failure

A membrane that lines the medullary cavity and the holes of cancellous bone and contains bone-forming cells is the ________. 

Fill in the blank(s) with the appropriate word(s).