Ohlsen CNS

The brain and spinal cord are protected and cushioned by three connective tissue membranes that are collectively called ________.

• arachnoid villi

• meninges

• ventricles

• diencephalon

Which one of the following represents the correct sequence from most superficial to deepest layers of the meninges?

• dura mater, pia mater, arachnoid mater

• dura mater, arachnoid mater, pia mater

• pia mater, arachnoid mater, dura mater

• pia mater, dura mater, arachnoid mater

Cerebrospinal fluid (CSF) is made by the

• caudate nucleus

• choroid plexus

• tegmentum

• spinal cord

main two-way conduction pathway to and from the brain

• corpus callosum

• spinal cord

• cranial nerves

• plexuses

In the spinal cord the white matter is ____________ to the grey matter

• superficial (outside)

• deep (inside)

• anterior (in front)

• lateral (to the side)

Lets small or non-polar but NOT large or polar substances into the CNS; protects CNS chemically

• meninges

• blood brain barrier

• cerebral spinal fluid

• dura mater

Delivers oxygen and nutrients to the CNS

• cerebral spinal fluid (CSF)

• meninges

• diencephalon

• blood brain barrier

The bony protection for the skull is the ________ and the bony protection for the spinal cord is the _____________.

• cranium; vertebra

• cranium; meninges

• meninges; vertebra

• meninges; meninges

In the spinal cord, afferent signals come in the _________ root to the _________ horn.

• dorsal; dorsal

• dorsal; ventral

• ventral; dorsal

• ventral; ventral

In the spinal cord, efferent signals leave through the _________ horn to the _________ root.

• dorsal; dorsal

• dorsal; ventral

• ventral; dorsal

• ventral; ventral