Midterm

Question 1

cranial nerve that conveys impulses for most somatic sensations from the face to the pons

Answer 1

trigeminal

Question 2

longitudinal fissure of the cerebrum separates the ____

Answer 2

two lateral hemispheres

Question 3

net like region of white & grey matter that extends throughout the brainstem and functions to maintain conciousness =

Answer 3

reticular formation

Question 4

excitatory neurotransmitter =

Answer 4

epinephrine

Question 5

parts of the brainstem associated w breathing

Answer 5

pons and medulla

Question 6

white matter is white b/c of

Answer 6

lipids in myelin

Question 7

layer of meningeal tissue is the innermost covering of spinal cord =

Answer 7

pia mater

Question 8

how are the oculomotor, trochlear and abducens are functionally related how

Answer 8

they control mm’s that move through the eyeballs

Question 9

structure that protects the spinal cord

Answer 9

spinal column

Question 10

dura mater is continuous with the _____ of a nerve

Answer 10

epineurium

Question 11

white matter in the spinal cord is on the ______

Answer 11

outside

and gray matter is on the inside

Question 12

the spinal cord ends at the

Answer 12

conus medullaris

Question 13

in a sensory pathway, the neuron that carries info from the thalamus to the cortex is known as the _____

Answer 13

third order neuron

Question 14

sensory information enters the _____

Answer 14

posterior (dorsal) cord

Question 15

motor information exits from the ______

Answer 15

anterior (ventral) cord

Question 16

axons in the corticospinal pathway decussate at the ______

Answer 16

pyramids of the medulla

Question 17

the somatic nervous system provides motor signals and concious control to _____

Answer 17

skeletal mm’s

Question 18

where does saltatory conduction occur

Answer 18

along myelinated axon

Question 19

during depolarization phase of the action potential , the membrane potential _____-

Answer 19

increases (higher than -70mV)

Question 20

neurotransmitters are eliminated from the synaptic cleft by

Answer 20

broken down by enzymes
diffuse out of cleft
taken up by the presynaptic cell and removed

Question 21

the telencephalon differentiates to give rise to the

Answer 21

cerebral hemispheres and lateral ventricles

Question 22

limbic system is called the ____ brain

Answer 22

emotional

Question 23

areas of the cerebrum responsible for conscious movements of the body

Answer 23

primary motor area

Question 24

tracts used to conduct nerve impulses between gyri within the same cerebral hemisphere are _____

Answer 24

association tracts

Question 25

roles of myelin

Answer 25

speeds up the movement of an action potential down an axon

Question 26

what structure conducts nerve impulses between two diff hemispheres of the cerebrum

Answer 26

corpus callosum

Question 27

functional areas of cerebrum responsible for vision

Answer 27

primary visual area

Question 28

cranial nerve that carries sensory information coming from the nasal cavity to the olfactory area of cerebrum

Answer 28

cranial nerve 1

Question 29

cranial nerve responsible for regulating visceral activity

Answer 29

Vagus CN X (10)

Question 30

pt's with damage to the left hemisphere often exhibit aphasia (inability to use or comprehend words) this show the left brain more often contains

Answer 30

Brocas and Wernikes areas

Question 31

what does Glossopharyngeal IX (9) control

Answer 31

taste sensation to tongue mms for swallowing senses changes in BP

Question 32

which CN carries smell sensory info to the brain

Answer 32

CN I olfactory

Question 33

is tectospinal an indirect or direct pathway?

Answer 33

indirect

Question 34

_______ carries sensory info from the face to the brain

Answer 34

trigeminothalamic

Question 35

______ carries motor info from the brain to the face

Answer 35

corticobulbar

Question 36

______ has a gracile fasciculus division and a cuneate fasciculus division

Answer 36

dorsal columns medial lemniscus

Question 37

_____ carries info about pain from the body to the brain

Answer 37

spinothalamic

Question 38

what is the only cranial nerve w a dermatome

Answer 38

trigeminal CN V

Question 39

what happens when there is a lack of acetylcholinesterase in the synaptic vesicles

Answer 39

spastic paralysis

Question 40

what CN supplies motor senses to the tongue and helps w swallowing/speech

Answer 40

hypoglossal

Question 41

Babinski's sign in an adult is a sign of

Answer 41

interruption of corticospinal tract

Question 42

what tracts connect the cerebral gyri of the opposite hemisphere

Answer 42

commissural

Question 43

what tracts connect the cerebrum with the thalamus, brainstem, spinal cord

Answer 43

projection tracts