Brodmann Areas quiz Flashcards
Where is #4 located?
Precentral gyrus of the frontal lobes
4 contributes the most fibers to the ___ system
Pyramidal
Functions of #4
Voluntary motor initiation-> distal extremities and facial and oral musculature
4 is the only area to contain ___
Giant pyramidal (Betz) cells
Is the cortex in #4 thin or thick?
Thick
Which lamina are located in #4?
V and VI
Where are #1-3 located?
Postcentral gyrus
Function of #1-3
Body sensing
Lamina located in #1-3
IV, I, VI
Areas 6 and 8 are called the ___
Premotor regions
Function of #6 and 8
Contribute fibers directly and indirectly to the pyramidal system
Function of #6
Motion of proximal extremities
Function of #8
Voluntary movements of the eyes-> CNs III, IV, VI
Where are #9-12 located?
Prefrontal cortex
Which lamina are located in #9-12?
II and III
Function of #9-12
Thought, abstract reasoning, imaginative and emotional uniqueness
Where is #44 located?
Frontal operculum
What is the other name for #44?
Broca’s speech area
Function of #44
Motor speech center-> initiates tongue, laryngeal, and pharyngeal musculature in the process of speaking, writing and signing
What is aphasia?
Loss of power to communicate through writing, speaking or signs
Strokes can cause ___
Motor aphasia
What is dysphasia?
Partial or unusual loss of communicative ability
T/F: communicative skills are dominant on the left side of the brain
True
Where are #17-19 located?
Occipital lobes
Where is #17 located?
Along the calcarine sulcus
From what does #17 receive input?
Lateral geniculate body
What is #17?
Primary visual cortex
What is #17 also called?
Striate cortex
What lamina is found in #17?
IV
What are the functions of #18 and 19?
Integrating and memory storage for visual sensations
A lesion in #18 or 19 does not lead to blindness, but does…
Inhibit correlating present images with past experience
What is prosopagnosia?
- damage to 18 and 19
2. being unable to recognize faces
What is the macula lutea?
- portion of the retina with the clearest vision
2. part affected by macular degeneration
Lesions to the optic chiasm causes
Tunnel vision
Lesions to the optic nerve causes
Loss of entire eye
Lesions to the optic tract causes
Losing 1/2 of field of vision
Lesions to the lateral geniculate body causes
Losing 1/2 of field of vision L->R
Lesions to the optic radiation causes
Losing 1/2 of field of vision R->L
What is #41 called?
Primary auditory cortex
Where is #41 located?
Heschl’s gyrus
Where do fibers come from in #41?
Medial geniculate body
What is #22 called?
Wernicke’s area
What is the function of #22?
Hearing memory, formation of written word
Where does #22 receive input from?
Parietal lobe and occipital lobe
A lesion in #22 can lead to ___
Dysphagia
Where are #5, 7, 39, 40 located?
Between the somesthetic, auditory, and visual receptive regions
Function of #5, 7, 39, 40
Synthesizing memory and sensation into reading, writing and language
Lesions in #39 cause
Alexia and agraphia
What is the connection between #22 and #44 called?
Arcuate fasiculus
Function of #43
Taste
Interpretation of olfaction occurs in #34 in the ___
Uncus
Interpretation of olfaction occurs in #28 in the ___
Parahippacampal gyrus
Functions typically lateralized to the left
- speech
- tool use
- vocabulary
- grammar
- linear reasoning
Functions typically lateralized to the right
- spatial manipulations
- prosodic language
- facial expressions
- intonation
- singing