Mod 2 Flashcards
What are the lobes of the brain
Frontal, parietal, limbic, temporal, occipital
What is considered to be the sixth lobe of the brain
Insula
In the skull the frontal lobe lies on the _____ fossa
Anterior
In the skull the _______ rests on the middle fossa
Temporal
The ____ rests in the posterior fossa. It also includes ___,____,___
Occipital
Pon, cerebrellum and medulla
What is the cortex composed of
Grey matter
The cortex is divided into the ___ and ____
Neocortex and allocortex
What is included in the neocortex
Frontal, parietal, temporal, occipital and insular lobes
Accounts for 90% of the cortex
What does the allocortex include
Hippocampal structures, olfactory cortex and limbic structures
10% of cortex
What cells in the cortex give rise to voluntary movement pathways
Giant cells of Betz
Most cortical neuron are _____ cells
Pyramidal
The cortex is organized into ____ columns
Vertical
An elevation in the surface of the brain is called
Gyrus or convolution
A depression in the surface of the brain is called
sulcus or fissure
Another name for the central sulcus
Fissure of Rolando
Another name for Sylvian fissure
Lateral fissure/sulcus
The Sagittal fissure is also known as
The longitudinal fissure
Where is the frontal lobe located
Anterior to the central sulcus and superior to the lateral sulcus
The occipital lobe is located ___
On the lateral view, posterior to an imaginary line parallel to the parietooccupital sulcus
Where is the posterior lobe
Posterior to the central sulcus
Anterior to the imaginary parietooccipital line
The _____ is below the lateral sulcus and anterior to the imaginary p/o line
Temporal
The insula is located
Deep the the sylvian fissure
The limbic system is located
At the bottom of the sylvian fissure, medially
What are the important gyri of the frontal lobe
Precentral, superior/first frontal gyrus, middle/second gyrus, and inferior/third
The precentral gyrus contains
Primary motor strip (Broadman’s area 4)
Vertically oriented
Organized as the motor homunculus
The third/inferior frontal gyrus contains
Broca’s area (44) = motor association cortex for speech
How many sections does the third/inferior frontal gyrus have
3
Opercular
Triangular
Orbital
The broca’s area include the ___ and ___ sections for the inferior gyrus
Triangular and opercular
What’s the difference between primary and association
Association are secondary and tertiary cortical area –> border the primary
For sensory cortical functions ____ receives/perceives the sensory data and the _____ interprets the meaning
Primary
Association
For the motor cortical functions, the ____ sends out commands for muscles to contract and the ____ provide the plan or program for desired movement
Primary
Association
The premotor cortex is
Motor association cortex for skilled movement
Also known as area 6 or supplementary motor area
The _____ cortex lie anterior to areas 4,6 and 8
Prefrontal cortex
What is the role of the prefrontal cortex
Executive functioning, reassigning and planning
What is brodmans are 3-1-2
Post central gyrus
The post-central gyrus is Brodmann’s areas _______ and mediates________ _______ _________ information
3-1-2
Somatic general sensory
Damage to Broca’s area results in
Problems motor planning for speech
The layers of the cortex are horizontally and vertically organized and show cell specificity by vertical location that is related to function
True
Sensory association areas are
Sensory integration/interpretation
The occipital lobe contains area 17 which is visual association cortex.
False: primary visual cortex
Areas 18 and 19 are the association cortex
Wernicke’s area is in the _______lobe and is ________ ________ ________cortex.
temporal ; auditory verbal association
The Sylvian Fissure separates the
Frontal and temporal lobes
The supramarginal gyrus is located in the ___________lobe and is a _______area.
Parietal
Sensory association
Functionally, the pre-central gyrus is responsible for motor innervation to the voluntary skeletal musculature and is Brodmann’s area
4
A lesion to the supramarginal gyrus causes
Alexia
A lesion to the angular gyrus
Anomia
Heschl’s gyrus is in the ____ and is the ____ _____ cortex
Temporal
Primary auditory
Broca’s area is in the 3rd or inferior gyrus of the temporal lobe
False: in the 3rd/inferior gyrus of the frontal lobe
Lesions to the right parietal lobe result in
Visuospatial and constructional disorders
Brodman’s area 41 and 42 is
Heschl’s gyrus
Brodman’s area 22
Weirnicke’s
