Exam 3 Part 3 Flashcards
Brainstem
mesencephalon, pons, medulla oblongata
main connection between cerebrum and spinal cord
many autonomic centers
Mesencephalon
midbrain. cerebral aqueuct: connects 3rd and 4th ventricle cerebral peduncles Many paired nuclei tectum
cerebral peduncles
in midbrain.
paired motor tracts, support and connect cerebrum to other part of brain
tectum
in midbrain
cover cerebral aqueduct
corpora quadrigemina
2 pairs of sensory nuclei
superior (visual reflexes) and inferior (auditory reflexes) colliculi
in midbrain
pons
bridge, midbrain, medulla oblongata and cerebellum
modifies rate and depth of breathing; sleep secondary resp center
medulla oblongata
connects to spinal cord at foramen magnum
decussation of the pyramids; crossover of motor tracts
nuclei for vital functions
resembles spinal cord; white matter to outside; gray matter inner areas
nuclei in medulla oblongata
cardiac center
vasomotor center
respiratory center
reflexes
cerebellum
2nd largest structure of brain
separated from cerebrum by transverse fissure
2 hemispheres; connects at central constricted areas
3 layers
coordination of skeletal mucles, postre; drug effect
proprio perception
layers of cerebellum
cerebellar cortex
arbor vitae
cerebellar nuclei
cerebellar cortex
outer, gray matter of cerebellum Purkinje cells (interneurons)
Arbor vitae
white matter
in cerebellum
tree of life
cerebellar nuclei
in cerebellum
deep, gray matter
Hindbrain
cerebellu,. pons, medulla oblongata; aqueduct enlarges-> 4th ventricle (has choroid plexus)
reticular formation
reticullar activating system
RAS -network of neurons (midbrain, pons, medulla oblongata to spinal cord) -> keeps one awake
