The brainstem is formed by the medulla and cerebellum

A properly worn motorcycle helmet will:

A) not protect the cervical spine. B) eliminate the risk of head trauma. C) decrease the risk of a spinal injury. D) minimize the trauma caused by secondary impacts.

"A progressive systemic skeletal disease characterized by low bone mass and micro architectural deterioration of bone tissue, with a consequent increase in bone fragility and susceptible to fracture" describes which of the following diseases?

A. Osteosarcoma B. Osteoporosis C. Renal osteodystrophy D. Paget's disease