Primary somatisormory cortax -Axons of thind-onter neurons - Thalamus- Carsbrum Midbrain Carsbeilum Pons -Latoral spinothalamic tract (aors of sacondonter nouons) Dorsal- Modial lomniscus (tract) (aors of sacond order niaurons) spinocorobellar tract (ens of sacond-ordar naurore) - Nucious gracils - Nucious cunatus Madu obiongan Fasciculus cunoatus (aon of tnstorder narmory nauon) Pain mcaptors -Jont strutch Tacaptor (propriocapitor) Auon of frst-ordar Carvical spinal cond Aons of first-ordar neuron -Fasciculus gracilis (on of fistordar sarsory nouor) naurons Muscla spindia (propriociaptor) Tamparatura racaptors Lumbar spinal cord Touch racaptor (a) Spinocorabellar pathway Dorsal column-medial lomniscal pathway (D) Spinothalamke pathway Figure 12.32 Pathways of soloctod ascending spinal cord tracts. Cros sactions up to the corobrum, whikh shown In frontal section (a) The spinocarebellar pathway Oefo tansmits propriocaptive information only to the cerebelum, and so bsubcorscous. The dorsal column-modial kemniscal pathway transmits discriminative touch and corecious propriocapton signals to the corobral cortex. (h) The lateral spinothalamik pathway traremits pain and tamperature. Se abso table 12.2

Primary somatisormory cortax -Axons of thind-onter neurons - Thalamus- Carsbrum Midbrain Carsbeilum Pons -Latoral spinothalamic tract (aors of sacondonter nouons) Dorsal- Modial lomniscus (tract) (aors of sacond order niaurons) spinocorobellar tract (ens of sacond-ordar naurore) - Nucious gracils - Nucious cunatus Madu obiongan Fasciculus cunoatus (aon of tnstorder narmory nauon) Pain mcaptors -Jont strutch Tacaptor (propriocapitor) Auon of frst-ordar Carvical spinal cond Aons of first-ordar neuron -Fasciculus gracilis (on of fistordar sarsory nouor) naurons Muscla spindia (propriociaptor) Tamparatura racaptors Lumbar spinal cord Touch racaptor (a) Spinocorabellar pathway Dorsal column-medial lomniscal pathway (D) Spinothalamke pathway Figure 12.32 Pathways of soloctod ascending spinal cord tracts. Cros sactions up to the corobrum, whikh shown In frontal section (a) The spinocarebellar pathway Oefo tansmits propriocaptive information only to the cerebelum, and so bsubcorscous. The dorsal column-modial kemniscal pathway transmits discriminative touch and corecious propriocapton signals to the corobral cortex. (h) The lateral spinothalamik pathway traremits pain and tamperature. Se abso table 12.2

Anatomy & Physiology

1st Edition

ISBN:9781938168130

Author:Kelly A. Young, James A. Wise, Peter DeSaix, Dean H. Kruse, Brandon Poe, Eddie Johnson, Jody E. Johnson, Oksana Korol, J. Gordon Betts, Mark Womble

Publisher:Kelly A. Young, James A. Wise, Peter DeSaix, Dean H. Kruse, Brandon Poe, Eddie Johnson, Jody E. Johnson, Oksana Korol, J. Gordon Betts, Mark Womble

Chapter13: Anatomy Of The Nervous System

Section: Chapter Questions

Problem 3ILQ: Watch this video (http://openstaxcollege.org/l/basalnuclei1) to learn about the basal nuclei (also...

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Brodmanns areas map different regions of the ________ to particular functions. cerebellum cerebral cortex basal forebrain corpus callosum
Watch this video (http://openstaxcollege.org/l/basalnuclei1) to learn about the basal nuclei (also known as the basal ganglia), which have two pathways that process information within the cerebrum. As shown in this video, the direct pathway is the shorter pathway through the system that results in increased activity in the cerebral cortex and increased motor activity. The direct pathway is described as resulting in disinhibition of the thalamus. What does disinhibition mean? What are the two neurons doing individually to cause this?
Watch this video (http://openstaxcollege.org/l/lumbarpuncture) that describes the procedure known as the lumbar puncture, a medical procedure used to sample the CSF. Because of the anatomy of the CNS, it is a relative safe location to insert a needle. Why is the lumbar puncture performed in the lower lumbar area of the vertebral column?
The autonomic portion of the PNS functions _________.a. consciouslyb. voluntarilyc. without conscious effortd. dependently
The central terminals of afferent neurons mediating spinal reflexes are distributed within the spinal cord, so that :-a- all of them terminate in the same spinal segment of their entry to the cordb- all of them terminate on interneuronsc- all of them subserve spinal reflexesd- they provide pathways for divergence of the incoming sensory impulses
Contrast the somatic nervous system with the ANS foreach of the following:a. number of neurons between the CNS and the effectororganb. location of neuron cell bodiesc. structures each innervatesd. inhibitory or excitatory effectse. conscious or unconscious controlf. neurotransmitter(s) used
The cerebellum ________.a. communicates with the rest of the CNSb. creates awareness of the body’s location in spacec. coordinates skeletal muscle activityd. all of the above
The withdrawal reflex is a monosynaptic reflex arc.True ORFalse
The divergence function of interneurons is involved in :-a- temporal summationb- spatial summationc- reverberationd- irradiation
Which of these structures is not under direct control ofthe peripheral nervous system?a. trigeminal ganglionb. gastric plexusc. sympathetic chain gangliad. cervical plexus
The cerebellum controls performance of rapid movements by :-a- directly stimulating AHCs of the acting musclesb- by storing pre-planed motor programs for these movementsc- by rapidly receiving proprioceptive information from the acting musclesd- by inhibiting antagonistic muscles
Interneuron after-discharge circuits prolong the duration of :-a- sensory input to the spinal motor centersb- synaptic delay in central synapsesc- discharge of efferent neuronsd- conscious perception of the evoked sensation