Week 4: Tutorial & Canvas Flashcards
The midbrain consists of the…
tegmentum & colliculi (tectum)
What separates the cerebellum from the cerebral hemisphere?
Transverse fissure & tentorium
Cerebral cortex is …… matter. Immediately beneath the cortex is ….. matter.
- Grey
- White
Role of the longitudinal fissure?
Splits the cerebral hemisphere into left and right
Another name for the lateral sulcus is…..
The sylvian fissure
Function of the pre-central gyrus
Primary motor area
Function of the post-central gyrus
Primary somatosensory area
Function of the superior temporal gyrus
Hearing
Function of the cingulate gyrus
Emotion and motivation (part of limbic system)
What type of matter is the corpus callosum? And what is its role?
White matter. Role is to join the two hemispheres.
The midbrain has what white matter feature ventrally on each side?
Cerebral peduncle
The dorsal midbrain is called the…..
What elements form this?
Tectum (roof)
Superior colliculi involved in eye movements and inferior colliculi part of auditory pathway
What makes up the tectum?
The superior colliculi (involved in eye movements) and inferior colliculli (part of auditory pathway)
What is the basilar artery?
The main artery which supplies blood to the back of the brain
What is contained within the cerebral cortex?
The supplementary motor area and premotor area
What is the supplementary motor area responsible for?
Plans complex movement
Coordinates hand movement
What is the premotor area responsible for? What particular group of muscles?
Guides body movement by integrating sensory info.
Axial muscles (involved in eye movement and orientation)
What is the Broca?
In frontal lobe. Responsible for speech production.
What would happen if the Broca region was damaged?
Dyphasia/aphasia ie dysfunction of word expression. Can hear sound/voice but can’t make sense of it.
What would happen if Wernickes area was damaged?
Dyphasia/aphasia ie dysfunction of word expression. Can hear sound/voice but can’t make sense of it.
What is the somatosensory association area?
Top of parietal lobe - processes info and object recognition.
What would happen if the somatosensory association area was damaged?
Astereognosis. Inability to identify an object by touch ie requires other sensory input such as vision.
What is the difference between unilateral and bilateral auditory cortex damage?
Bilateral = complete hearing loss vs unilateral = hearing impairment.
- hearing loss = can still react to startling sounds via reflex
