Which of the following marrow elements provides the microenvironment for proliferation and differentiation of hematopoietic cells?

A 39-year-old male sustained a large laceration to his leg during an accident with a chainsaw and is experiencing signs and symptoms of shock. You should first:

A. place the patient on high-flow oxygen. B. perform a rapid head-to-toe assessment. C. follow appropriate standard precautions. D. apply direct pressure to the wound.

A PA chest projection (lateral decubitus position) demonstrates

1. the C6-7 vertebral bodies without distortion. 2. the manubrium superimposed over the fourth vertebral body. 3. a closed C6-7 intervertebral disk space. 4. clearly shown C6-7 spinous processes and laminae. a. 1 and 2 only b. 2 and 3 only c. 2, 3, and 4 only d. 3 and 4 only