BISC 225 Exam 5 - Chapter 11 and 12

What comprises the central nervous system (CNS)?

Brain and spinal cord

What would be the effect of damage to Broca's area?

Loss of motor control needed for speech

What part of the brain assigns value to a memory?

Amygdala

What is the correct order for the components of a reflex arc?

Receptor

What part of the brain includes the thalamus and hypothalamus?

Diencephalon

What is found within the dural sinuses?

Venous blood

Which of these fiber types are typically adrenergic?

Sympathetic postganglionic fibers

What is the expected response to the triceps-jerk reflex?

Extension of the forearm

Where is the choroid plexus located that secretes most of the cerebrospinal fluid present at any one time?

Lateral ventricles

Katryn injured her C3 spinal nerves — what area loses sensation?

Her neck

Impulses conducted along the corticospinal tracts are_ in nature and control__.

Motor; voluntary muscle movements

Which cranial nerves are primarily motor nerves innervating the muscles that move the eyes?

Oculomotor nerves (CN III)

What is found within the gray matter of the spinal cord?

Interneurons

What are pyramidal cells?

Neurons originating in primary motor cortex that control skeletal muscles

What part of the brain coordinates voluntary muscular movements?

Cerebellum

What is the effect of sensory nerve fibers crossing over?

The right cerebral hemisphere receives sensory impulses originating on the left side of the body and vice versa

Activity in what part of the brain determines the level of alertness or wakefulness in the cerebral cortex?

Reticular formation

The cerebral aqueduct contains CSF flowing from the to the.

Third ventricle; fourth ventricle

What is a function of the association areas of the frontal lobes?

Higher intellectual processes

What structure separates the two cerebral hemispheres?

Falx cerebri