Answer: Arachnoid mater.
- A Dura mater
- B Pia mater
- C Arachnoid mater
- D Cortex mater
Correct answer: C. Arachnoid mater
Explanation: From outside in the meninges are dura mater, arachnoid mater (middle) and pia mater.
Structure of a neuron. Image: LadyofHats (Mariana Ruiz), Public Domain, via Wikimedia Commons.
Concept context
Brain, spinal cord, neurons, reflex arcs, and sense organs.