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the human nervous system is formed of two components that work together to coordinate _________________.
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information from the environment is transmitted to the __________ by nerves of the PNS.
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Anatomy Ch. 9
Structure of the Nervous System
| Question | Answer |
|---|---|
| the human nervous system is formed of two components that work together to coordinate _________________. | body functions |
| information from the environment is transmitted to the __________ by nerves of the PNS. | CNS |
| within the _________, this information is integrated into a reflex or cognitively processed by the brain | CNS |
| specialized regions of the brain interpret ______________information | sensory |
| the brain uses sensory information to formulate a ________________ | response |
| responses of the brain are channeled to the body through either the _______________ or the ________________nervous system | autonomic, somatic |
| special sensroy receptors in the ___________ add to variety of environmental stimuli that the body recieves | head |
| ____________are bundles of neurons | nerves |
| ____________nerves carry sensory information | afferent |
| ____________nerves carry motor information | Efferent |
| The __________ is composed of the brain and spinal cord | CNS |
| the spinal cord corrdinates refleces and singals to and from the __________ | brain |
| the _________ is composed of somatic nerves, autonomic nerves, and ganglia | PNS |
| the autonomic nervous system is divided into the _______________ and _______________ nervous systems | parasympathetic, sympathetic |
| the special senses are concentrated in the ___________ | head |
| chemoreceptors on the tongue sense taste (______________) | gustation |
| chemoreceptors in the nose sense smell (_____________) | olfaction |
| Photoreceptors in teh retina of the eye sense light (_____________) | vision |
| ______________are color photoreceptors, and _________detect dim light | cones, rods |
| neurons in the __________sense sound vibrations (hearing) | cochlea |
| neurons in the semicircilar cancals and vestibule sense _____________ (equilibrium) | position |
| aging is accompanied by some neuron loss in the _____________ | brain |
| the ___________loses weight as a person matures | CNS |
| most brain aging is due to loss of ______________ and decreased blood flow. | myelinization |
| most people show a ____________ in complex brain functions as they age. | decrease |
| ________________ and ________________ compensate for neuron loss in the CNS | plasticity, redundancy |
| sensory structure thresholds _____________ with age. | increase |
| the nervous system develops from a dorsal cylinder of ectoderm called the ______________ | neural tube |
| a_______________is a clump of nerve cell bodies covered by a sheath. they are found outside the CNS | ganglion |
| _____________nerve tracts carry sensory information to the brain | ascending |
| _____________nerve tracts carry motor information from the brain to the body | descending |
| ___________nerves are responsible for carrying sensory and motor information between the brain and the body | spinal |
| the ______________nervous system is responsible for involuntary functions | autonomic |
| the ______________nervous system is associated with voluntary functions | somatic |
| humans have _______pairs of cranial nerves and _______pairs of spinal nerves | 12, 31 |
| Nerve cell bodies are most likely found in the: ____________ | gray matter of the spinal cord |
| the innermost layer of the menings is the ____________ | pia mater |
| cerebrospinal fluid is found in the ___________________ | ventricles |
Created by:
Lauren G.
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