NEU 311L: Midterm Questions with Answers (100%
Correct Answers)
dura mater Answer: outermost layer of the meninges
very thick, tough, leathery
adheres to the skull
arachnoid mater Answer: the middle layer
thin and web-like, shiny
pia mater Answer: inner most layer
in direct contact with the brain
small; very thin and fragile
adheres directly to the brain
frontal/coronal planes Answer: divides into front and back
sagittal plane Answer: divides into left and right
horizontal plane Answer: parallel to the dorsal/ventral axis
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sulci Answer: grooves on the surface of the brain
very large one = fissure
gyri Answer: raised bumps on the surface of the brain
frontal lobe Answer: most caudal portion contains the primary motor
cortex (necessary to plan and execute coordinated movements of the
body)
bound by the ansate sulcus and pseudosylvian sulcus
parietal lobe Answer: contains the primary somatosensory cortex
(necessary for sensory feelings of the body)
bound by the ansate sulcus, suprasylvian sulcus, and lateral sulcus
temporal lobe Answer: found on the side of the brain, contains the
auditory cortex
bound by the pseudosylvian sulcus and the suprasylvian sulcus
occipital lobe Answer: contains the visual cortex
medial to the lateral sulcus
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, 3
central sulcus Answer: divides the frontal lobe from the more caudal
parietal lobe
homunculus Answer: contains primary motor cortex and primary
somatosensory cortex
shows how the body is mapped onto the surface of the cortex
brainstem Answer: medulla, pons, and midbrain
midbrain Answer: most rostral portion of the brainstem
tectum - "roof"; made up of superior and inferior colliculi
tegmentum - "floor"; contains collections of cell bodies (nuclei) that
function in sleep/wake cycles, arousal, and temperature regulation
pons Answer: "bridge"; found caudal to the midbrain
contains both white and gray matter
nuclei are involved with a number of body functions, such as
respiration, sleep, swallowing, vomiting, posture, and others
contains many white matter fiber tracts that communicate information
between the cerebral hemispheres and the cerebellum and medulla
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