1-11 Structure of the Vertebrate Nervous System (Part 1)

See study guide.

See study guide.

Brain and spinal cord

Nerves outside the brain and spinal cord

Division of the PNS that conveys messages from the sense organs to the CNS and from the CNS to the muscles

Division of the PNS that controls the heart, intestines, and other organs

Toward the back

Toward the stomach

Part of the CNS found within the spinal column; the spinal cord communicates with the sense organs and muscles below the level of the head

Law that states that the entering dorsal roots (axon bundles) carry sensory information and the exiting ventral roots carry motor information

Clusters of neurons outside the spinal cord, where the cell bodies of the sensory neurons are located

Central portion of the spinal cord; consists of densely packed cell bodies and dendrites

Portion of spinal cord surrounding the spinal gray matter; transmits information from the spinal gray matter toward the brain or other parts of the spinal cord

Part of the autonomic nervous system (ANS); a network of nerves that prepares the organs for vigorous activity; for example, it increases heart rate and blood pressure, dilates pupils, decreases digestive activity, and increases blood flow to muscles

Part of the ANS; facilitates vegetative, non-emergency responses by the organs; for example, it decreases heart rate, decreases blood pressure, pupil constriction, and increases digestive activity