Question

a patient has a fracture in which the radius is bent but not displaced, and the skin is intact. this type of fracture is known as what?
○ open, spiral
○ compound, transverse
○ complex, comminuted
○ closed, greenstick
question 16
2 pts
which of the following neuroglia cells regulate ions, regulate the uptake and/or breakdown of some neurotransmitters, and contribute to the formation of the blood - brain barrier?
○ astrocytes
○ oligodendrocytes
○ neuroglia
○ microglia

Explanation:

• For the fracture question:
• A closed fracture means the skin is intact. A greenstick fracture is when a bone is bent (incomplete fracture) rather than fully broken and displaced.
• Open (compound) fractures involve a break in the skin. Spiral, transverse, and comminuted refer to different patterns of bone breakage (not just bending).
• For the neuroglia question:
• Astrocytes are neuroglia cells that regulate ions, neurotransmitter uptake/breakdown, and contribute to the blood - brain barrier.
• Oligodendrocytes form myelin sheaths in the central nervous system. Microglia are phagocytic cells in the nervous system. Neuroglia is a general term for glial cells (not a specific type with these functions).

Answer:

• First question: Closed, greenstick
• Second question: Astrocytes