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Test 4 Lombrana notes on chap 14 brain cranial nerves
abb lecture definitions etc part 2 (6)
29
Anatomy
Undergraduate 1
11/10/2009

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Term
the brainstem is made of 3 parts, name them
Definition
medulla oblongata, pons, midbrain
Term
the ________ is the inferior part of the brain stem
Definition
medulla oblongata
Term
the _______ composed of lg motor tracts that run from the cerebral cortex to the spinal cord
Definition
pyramids
Term
where 90 % of the axons in the lg motor tracts cross over
Definition
decussation of the pyramids
Term
what is the result of decussate
Definition
the right side of the brain controls the left
Term
masses of gray matter, where neurons form synapses with one another
Definition
nuclei
Term
__________ area of the respiratory center, adjusts the basic rhythm of breathing
Definition
medullary rhythmicity
Term
______ is where decussaton occurs
Definition
cuneate nucleus
Term
the _____ is for precise, voluntary movements, relay impulses from proprioceptors (joint and muscle positions)
Definition
inferior olivary nucleus
Term
the ______ connects parts of the brain with each other via bundles of axons
Definition
pons
Term
the pons consist of both _____ and ____ like the medulla
Definition
nuclei and tracts
Term
the pons nuclei has 2 respiratory centers
Definition
apneustic area, and the pneumotaxic area
Term
the 2 respiratory centers (apneustic area, pneumotaxic area) with the _______ help to control breathing
Definition
medullary rhythmicity
Term
the _______ like the pons and medulla contain white matter tracts and nuclei
Definition
midbrain
Term
the ________ conduct impluses from the motor areas in the cerebral cortex to the spinal cord
Definition
corticospinal tracts
Term
______, posterior part of the midbrain, contain 4 rounded elevations
Definition
tectum
Term
the _______ is the reflex centers for visual activities, head and neck in response to eye
Definition
superior colliculi
Term
the ______ is the part of the auditory pathway, relay impulses from receptors in the ear to the thalamus
Definition
inferior colliculi, startle reflex
Term
______ consists of sensory axons,helps maintain consciousness,
Definition
reticulart formation including the RAS (reticular activationg system)
Term
the _____ are neurons that have both ascending (sensory) and descending (motor) functions
Definition
reticular formation
Term
ascending functions are? sensory or motor?
Definition
sensory
Term
descending functions are? sensory or motor
Definition
motor
Term
what is the reticulart formations main descending (motor) function?
Definition
regulate posture and muscle tone
Term
the _____ is the second largest part of the brain
Definition
cerebellum
Term
the _______ are bundles of white matter in the cerebellum
Definition
cerebellar pedunccles
Term
______ consist of axons that conduct immpulses between the cerebellum and other parts of the brain
Definition
cerebellar peduncles
Term
what is the main function of the cerebellum
Definition
help coordinate skilled movement, evaluate movements by motor areas in cerebrum
Term
another function of the cerebellum?
Definition
posture n balance, cognition & language processing
Term
the thalamus, hypothalamus pineal glamd. subthalamus cort...prgans are contained in?
Definition
diencephalon
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