Addition to Exam I Flashcards
What is the thalamus referred to as? What does it receive? What does it relay?
The thalamus if referred to as a “relay station”. It is the gateway of the cortex.
It receives auditory, somatosensory and visual signals.
It relays sensory signals to the cerebral cortex.
What does the hypothalamus do?
Activates the sympathetic nervous system, body temperature, osmolarity, reproduction and food intake.
How does the hypothalamus interact with the rest of the body?
It interacts with limbic system to influence behaviors and emotions. It influences cardiovascular control center in medulla oblongata, and secretes trophic hormones that control release of hormones from anterior pituitary gland.
What does the medulla oblongata regulate?
It regulates cardiac and respiratory function, sleep, eating, and consciousness
What is the limbic system responsible for?
Emotion, memory, and learning.
What is aphasia?
Partial or complete loss of lanugage abilities following brain damage.
What does the Wernicke’s area process?
Cerebral processing of spoken and visual language.
If your Wernicke’s area is damaged, what may happen?
Damage may cause receptive aphasia - fluent speech but poor comprehension
What is the Broca’s area the center of?
Speech articulation
If the Broca’s area is damaged, what may happen?
Damage causes expressive aphasia - people can understand spoken and written language but cannot speak or write normally
The cochlea is the transduction organ of hearing. How does sound travel through the ear to reach the cochlea?
Sound waves travel down the basilar membrane of the cochlea, stimulates cochlear hair cells, which bend and cause AP. Cochlear nerve then transmits APs from the hair cells to the auditory cortex.
Describe the central auditory pathway.
Cochlea to brainstem to medial geniculate nucleus to auditory cortex.
