Exam 20: Central Nervous System

The lateral fissure separates the cerebellum from the rest of the brain.

The conus medullaris is located at about the first lumbar vertebrae.

One source of the tracts entering the cerebellum and forming the inferior cerebellar peduncle is the medulla.

The pyramids are formed in the:

The layer of meninges least likely to be involved in meningitis is the:

Name and describe the three important inward extensions of the dura mater.

The medial lemniscal system involves crude touch sensations, whereas the spinothalamic pathway involves more discriminating touch and pressure sensations.

Match each landmark of the brain with its description or location. -General term for a shallow groove in the cortex

Pyramidal pathways are more often associated with smiles and frowns than are the extrapyramidal pathways.

There are about 23 mL of cerebrospinal fluid in the nervous system.

Extrapyramidal tracts can function either to inhibit or to facilitate lower motor neurons.

Which of the following is not a function of the hypothalamus?

The vomiting reflex is mediated by the cerebellum.

Match each disorder with its corresponding definition. -Hemorrhage from or cessation of blood flow to the cerebral vessels, which destroys neurons; also called a stroke

What structure is the deepest groove in the cerebrum?

Projection tracts pass through the corpus callosum from one hemisphere of the cerebrum to the other.

Besides providing protection, the cerebrospinal fluid can influence the respiratory center.

If a person received a lumbar puncture that removed 15 mL of cerebrospinal fluid from the spinal cord, that amount would be about what percent of the cerebrospinal fluid?

Cerebrospinal fluid is found in all of the following except the:

The brain contains about 200 billion cells.