PNB /
2774 -
/ // /
Exam 3 Questions With Correct Answers
/ // // // // //
spinal //cord //structure
- //foramen //magnum //to //2nd //lumbar //vertebrae
- //shorter //than //vertebral //column
- //diameter //greatest //on //top
- //31 //pairs //of //nerves //exit //cia //intervertebral //foramina
spinal //cord //fucntion
information //integration //center; //reflex //arcs //outside //of //the //brain
spinal //meninges
specialized /
/membranes /
/isolate //spinal //cord //from //surroundings; //dura //mater, //arachnoid //mater, //pia //mater
sectional //anatomy //of //the //spinal //cord
spinal /
/cord //is //partitioned //into //an //inner //gray //matter //region //and //an //outer //white //matter //region
Gray //Matter: //Dendrites //and //cell //bodies //of //neurons, //unmyelinated //axons, //and //glial //cells
White //Matter: //myelinated //axons
dorsal //root
only //sensory //information
ventral //root
only //motor //information
dorsal //ramus
posterior /
/division; /
/both /
,/sensory /
/and /
/motor /
/information; /
/motor /
/impulses //to //posterior //trunk //muscles //and //sensory //impulses //from //the //skin //of //the //back
ventral //ramus
anterior /
/division; /
/both /
/sensory /
/and /
/motor /
/information; //impulses //to //and //from //muscle //and //skin //of //the //anterior //and //lateral //trunk
spinal //cord //motor //pathways
spinal //cord //sensory //pathway
ascending //tracts
carry //sensory //information //to //the //brain
descending //tracts
carry //commands //to //motor //neurons
cranial //nerves
12 //pairs //of //nerves //that //carry //messages //to //and //from //the //brain
I: //Olfactory
sesnory //only; //smell
II: //Optic
sensory //only; //vision
III: //Oculomotor
motor //only; //eye //muscles //(4/6), //pupil //size, //eye //shape
IV: //Trochlear
motor //only; //one //of //the //eye //muscles
, V: //Trigeminal
both /
/sensory /
/and /
/motor; /
/pain, /
/temperature, /
/chewing; /
/controllong /
/opthalmic, //maxillary, //and //mandibular //nerves; //greatest //sensory //function, //skin //dermatome
VI: //Abducens
motor //only; //one //of //the //eye //muscles
VII: //Facial
both /
/sensory /
/and //motor; //parasympathetic; //facial //expression, //taste, //control //of //salivary //glands, //tears
VIII: //Vestibulocochlear
sensory //only; //hearing //and //balance
IX: //Glossopharyngeal
both /
/sensory /
/and /
/motor; /
/parasympathetic; /
/general /
/and /
/taste /
/senstation, //posterior //1/3 //of //tongue, //blood //pH //and //gasses, //swallowing, //salivary //gland
X. //Vagal //("the //wanderer")
both /
/sensory //and //motor; //parasympathetic; //swallowing, //speaking, //visceral, //sensory, //and //motor
XI: //Accessory
2774 -
/ // /
Exam 3 Questions With Correct Answers
/ // // // // //
spinal //cord //structure
- //foramen //magnum //to //2nd //lumbar //vertebrae
- //shorter //than //vertebral //column
- //diameter //greatest //on //top
- //31 //pairs //of //nerves //exit //cia //intervertebral //foramina
spinal //cord //fucntion
information //integration //center; //reflex //arcs //outside //of //the //brain
spinal //meninges
specialized /
/membranes /
/isolate //spinal //cord //from //surroundings; //dura //mater, //arachnoid //mater, //pia //mater
sectional //anatomy //of //the //spinal //cord
spinal /
/cord //is //partitioned //into //an //inner //gray //matter //region //and //an //outer //white //matter //region
Gray //Matter: //Dendrites //and //cell //bodies //of //neurons, //unmyelinated //axons, //and //glial //cells
White //Matter: //myelinated //axons
dorsal //root
only //sensory //information
ventral //root
only //motor //information
dorsal //ramus
posterior /
/division; /
/both /
,/sensory /
/and /
/motor /
/information; /
/motor /
/impulses //to //posterior //trunk //muscles //and //sensory //impulses //from //the //skin //of //the //back
ventral //ramus
anterior /
/division; /
/both /
/sensory /
/and /
/motor /
/information; //impulses //to //and //from //muscle //and //skin //of //the //anterior //and //lateral //trunk
spinal //cord //motor //pathways
spinal //cord //sensory //pathway
ascending //tracts
carry //sensory //information //to //the //brain
descending //tracts
carry //commands //to //motor //neurons
cranial //nerves
12 //pairs //of //nerves //that //carry //messages //to //and //from //the //brain
I: //Olfactory
sesnory //only; //smell
II: //Optic
sensory //only; //vision
III: //Oculomotor
motor //only; //eye //muscles //(4/6), //pupil //size, //eye //shape
IV: //Trochlear
motor //only; //one //of //the //eye //muscles
, V: //Trigeminal
both /
/sensory /
/and /
/motor; /
/pain, /
/temperature, /
/chewing; /
/controllong /
/opthalmic, //maxillary, //and //mandibular //nerves; //greatest //sensory //function, //skin //dermatome
VI: //Abducens
motor //only; //one //of //the //eye //muscles
VII: //Facial
both /
/sensory /
/and //motor; //parasympathetic; //facial //expression, //taste, //control //of //salivary //glands, //tears
VIII: //Vestibulocochlear
sensory //only; //hearing //and //balance
IX: //Glossopharyngeal
both /
/sensory /
/and /
/motor; /
/parasympathetic; /
/general /
/and /
/taste /
/senstation, //posterior //1/3 //of //tongue, //blood //pH //and //gasses, //swallowing, //salivary //gland
X. //Vagal //("the //wanderer")
both /
/sensory //and //motor; //parasympathetic; //swallowing, //speaking, //visceral, //sensory, //and //motor
XI: //Accessory
