Seeley-s Anatomy and Physiology chapter 11 Questions and Complete Solutions

Seeley's Anatomy and Physiology
chapter 11 Questions and Complete
Solutions
Major functions of nervous system - Answer: Receiving sensory input, integrating information,
controlling muscles and glands, maintaining homeostasis, establishing and maintaining mental activity



Central nervous system - Answer: CNS, consists of the brain and the spinal cord



Peripheral nervous system - Answer: PNS, consists of all the nervous tissue external to the CNS



Sensory receptors - Answer: The endings of neurons, or separate, specialized cells that detect
temperature, pain, touch, pressure, light, sound, odor, and other stimuli



Nerve - Answer: A bundle of axons and their sheaths, it connects the CNS to sensory receptors, muscles,
and glands



Cranial nerves - Answer: Nerves that originate from the brain, 12 pairs



Spinal nerves - Answer: Nerves that originate from the spinal cord, 31 pairs



Ganglion - Answer: A collection of neuron cell bodies located outside the CNS



Plexus - Answer: An extensive network of axons and, in some cases, neuron cell bodies, located outside
the CNS



Sensory division - Answer: Afferent division. Transmits electrical signals from the sensory receptors to
the CNS, functional subdivision of the PNS