The brain and spinal cord are enclosed by three layers of membranes<br/>from outer to inner is_____. () A: The dura mater, the pia mater , the arachnoid B: The dura mater, the arachnoid, the pia mater C: The pia mater, the arachnoid, the dura mater D: The pia mater, the dura mater, the arachnoid E: The arachnoid, the pia mater, the dura mater

The cavity between the spinal dura and the spinal arachnoid is called ( ). A: Epidural space B: Subdural space C: Subarachnoid space D: Central canal

The third and fourth ventricles are communicated by A: interventricular foramina B: mesencephalic aquaduct C: median aperture D: lateral apertures E: arachnoid plexus

Which of the following is true statement relating to the meninges? A: The dura mater is composed of a dense fibrous connective tissue. B: The dura mater around the brain is single-layered. C: Venous sinuses occur between the two dural layers around the spinal cord. D: The most superficial meninx is the arachnoid membrane.

The spinal epidural space A: is located between the dura mater and arachnoid mater B: is located between the spinal dura mater and the periosteum of the vertebral canal C: with its contents can protects the spinal cord from injury D: opens into the cranial cavity through foramen magnum E: contains venous plexus and lymphatic vessels