Exam 15: The Nervous System: the Brain and Cranial Nerves

Sacral nerves carrying parasympathetic innervation to the pelvic organs.

Location in the brain of the cardiorespiratory and vasomotor control centers.

Which of the following cranial nerves does not supply parasympathetic fibers to the head?

Contrast the structure of the somatic and autonomic motor neurons.

Which division of the nervous system is characterized by highly branched postganglionic fibers that innervate multiple organs?

The trunk ganglia contain what kind of cell bodies?

A nurse encountered a patient in a wheelchair 3 months after the patient had sustained a crushing injury to his cervical spinal cord at the level of C6 in a motorcycle accident. Although the patient was paralyzed, his limbs were thrashing, his face was bright red, and he was sweating profusely. What was happening?

Where would you not find an autonomic ganglion?

Which of the following autonomic plexi does not lie on the aorta or on the main branches of the aorta?

Explain the relationship between the vagus and pelvic splanchnic nerves, the cardiac and pulmonary plexus, celiac plexus, and hypogastric plexus.

Adrenergic hormones are secreted into the bloodstream in this region of the adrenal gland.

The sensation of pain from a visceral organ that is perceived in the skin or outer body is the phenomenon called .

The nervous system consists of complete three-neuron reflex arcs that exist entirely within the wall of the digestive tube.

Three-neuron reflex arcs that exist entirely within the walls of the digestive tract.

Figure 15.1 Use the diagram above to answer the following questions. -Which letter indicates the cardiac plexus?

The micturition (urination) reflex is controlled by a parasympathetic reflex pathway in which

Postganglionic sympathetic fibers are relatively long compared to those of the parasympathetic division.

Vagal stimulation of the heart decreases heart rate, resulting in a drop in blood pressure.

Preganglionic fibers are myelinated, whereas postganglionic fibers are unmyelinated.

A class of preganglionic fibers present in both sympathetic and parasympathetic divisions.