Exam 9: The Nervous System: Central Nervous System

Adults spend more time sleeping as they age.

Which of the following reflexes is a monosynaptic reflex found in the human body?

In the motor and sensory homunculi, each body part is shown next to the area of cerebral cortex devoted to it. Which statement best describes what these homunculi represent?

What type of glial cells plays a critical role in maintaining extracellular potassium levels?

The cortex is not the only functional portion of the cerebrum; subcortical structures are important to a number of systems. Describe the subcortical structures of the cerebrum and their various functions.

Thermoregulatory centers are located in which area of the brain?

Afferent and efferent axons travel together in spinal nerves, but they separate into different bundles when they leave and enter the spinal cord. The afferent axons enter the spinal cord via the _ _ root and efferent axons leave the spinal cord via the root.

Insulin is known to cross the blood- brain barrier and attach to receptors in the brain. Which statement best describes the function of insulin in the brain?

Sleeping is an active process.

The crossed- extensor reflex is initiated by activation of what type of receptor?

The body surface is mapped into , which are regions that receive sensory information from particular spinal nerves.

Where in the cerebral cortex do thoughts occur?

Which nerves innervate the anterior thigh?

Somatic reflexes involve somatic neurons transmitting information to smooth and cardiac muscle cells.

Strokes can be classified as either occlusive or hemorrhagic.

This area of the brain is often referred to as the "control center" because it plays an important role in regulating homeostasis. It is involved in hunger, thirst, thermoregulation, and many other important homeostatic measures.

The frontal lobes are associated with personality.

Motor neurons are exclusively excitatory, which means that activity of those motor neurons cannot be modulated.

The euphoria that is perceived when one ingests drugs such as opioids or amphetamines results from the activation of the system.

Which of the following would consist of white matter?