Medulla
What are the 4 pairs of cranial nerves in the Medulla?
IX X XI XII
What are the cranial nerves in the pons?
V VI VII VIII
The forebrain consists of...
Diencephalon and Telencephalon (cerebrum)
Thalamus Hypothalamus Epithalamus
What are the cerebral hemispheres divided by? What fibrous tract connects them?
Longitudinal fissure. Corpus Callosum.
What connects the left and right cerebellar hemispheres?
Vermis
What are the 4 centers of the Medulla?
Where did the Midbrain derive from? What are its cranial nerves?
Mesencephalon
III IV
Functions of the Thalamus
Roles of gyri and sulci
Gyri increases surface area for info processing, sulci divide the cerebrum into 5 lobes.
Main functions of the cerebellum
Muscle contraction, motor coordination, and spacial perception.
What are Pyramids?
contain descending fibers that carry motor signals to skeletal muscles
What are the tracts of the Pons?
Ascending sensory tracts, descending motor tracts. Sensory roles are hearing, taste, equilibrium. Motor roles are chewing, eye movement, etc.
What attaches the hypothalamus to the pituitary gland?
Infundibulum
Role of gray matter
Neural integration, cerebral gray matter is found in cerebral cortex, basil nuclei, and the limbic sys.
Minor functions
Hearing, planning and scheduling tasks
Where does the medulla begin and what is it derived from?
What are the reticular formation in the pons?
contain nuclei involving sleep, breathing, and posture.
Roles of hypothalamus
Hormone secretion, thermoregulation, hunger, sleep, memory, emotion
What is the cerebral cortex?
The layer that covers the surface of the hemispheres.
What are the 3 parts of the hindbrain?
Pons, medulla, cerebellum
What is Reticular Formation?
loose network of nuclei extending throughout the medulla, pons, and midbrain. They contain cardiac, vasomotor, and respiratory centers.
The Midbrain contains...
cerebral aqueduct, medial lemniscus, reticular formation...contain motor nuclei of CN III and IV which control eye movements.
Epithalamus consists of...
Pineal gland, makes melatonin
Habenula, messenger from limbic sys. to the midbrain
Functions of cerebrum
Sensory perception, memory, thought, judgment, voluntary motor actions.
What are mammillary nuclei?
play a role in memory, receive signals from hippocampus, relay signals from limbic sys. to thalamus.