Problem 1 Flashcards
The Brain
Saggital Plane
Devides brain into left and right
Coronal Plane
Devides Brain into front and back
Horizontal Plane
Devides brain into upper and lower parts
Medial
towards the middle
Lateral
towards the side
Ipsilateral
location is on same side of the body
Contralateral
location is on opposite sides of body
superior
above
inferior
below
Anterior/Rostral
towards the nose
Posterior/Caudal
towards the back of the head/tail
Dorsal
towards top of the head
Ventral
towards chest/ bottom of head
Afferent Neuron
carries information into region of interest
Efferent Neuron
carries information out of / away from region of interest
Central nervous System
Division of the nervous system that consists of brain and Spinal cord
Division of the CNS
- Forebrain
Telencephalon
Diencephalon - Mesencephalon ( Midbrain )
- Hindbrain
Metencephalon
Myelencephalon ( Medulla) - Spinal Cord
Telencephalon ( Subdivisions )
Cortex, Basal Ganglia
Diencephalon ( Subdivisions )
Thalamus, Hypothalamus
Metencephalon ( Subdivisions )
Cerebellum, Pons
Peripheral Nervous System
Division of Nervous System, consisting of all the nerves lying outside the CNS
Allows CNS to send and receive information to other areas of the body
Division of the PNS
Somatic NS : Interacts with the external environment
Autonomic NS : Regulates the body internal environment
Substructures of the Frontal Lobe
- Prefrontal Cortex
- Motor Cortex
- Brocas Area
Brocas Area
- Production of written and spoken language
- Processing and comprehending language
Prefrontal Cortex
Assessing and controlling appropriate behaviour
-reasoning, planning, judgement
Premotor Cortex
Preparing movement
Primary Motor Cortex
controls the excecution of movement
Role of the Frontal Lobe
- voluntary movement
- decision making
- language
Role of Occipital Lobes
- primary visual area of the brain
- -> input from retina
Substructure of the Occipital Lobes
- dorsal stream
- ventral stream
Dorsal stream
- processes where objects are located
- projects information to the parietal lobes
Ventral stream
- processes what objects are
- projects information to the temporal lobes
Substructure of the Parietal Lobes
- Somatosensory Cortex
Role of the Parietal Lobes
Perception and integration of somatosensory information
ex.: pressure, pain, warmth
Substructures of the Temporal Lobes
- Wernickes area
- Superior / Inferior / Middle temporal Gyrus
- primary auditory Cortex
Middle Temporal Gyrus
Memory and language processing
Superior Temporal Gyrus
- Processing sounds and speech
- -> contains primary auditory cortex
Wernickes Area
language comprehension
Role of the Temporal Lobes
- recognition
- learning and memory
- perception ( herging, vision, smell )
Inferior Temporal Gyrus
Visual perception
Role of Cerebellum
- Coordination o voluntary movement
- Balance, timing, posture
Substructures of the Brain Stem
- Midbrain
- Pons
- Medulla
Role of the Brain Stem
- Maintaining Homoestasis
- -> regulating blood pressure, breathing etc. (autonomic functions)
- Sleep
Role of the Limbic System
- processing and controlling emotions
- memory formation + Storage
Substructures of the Limbic System
- amygdala
- hippocampus
- hypothalamus
- thalamus
Amygdala
- fight or flight response
- fear / emotion / reward processing
Hippocampus
memory
Hypothalamus
eating
sleeping
Sylvian Fissure
Sulcus,
Divides temporal lobe from frontal lobes
Central Sulcus
devides frontal and parietal lobes
Grey Matter
receives and processes information
White Matter
transmits information to other locations
Basal Ganglia
involved in instrumental conditioning
habit learning
–> acquired gradually
Ventral tegmental Area (Midbrain)
VTA
Origin of the dopaminergic cell bodies of the mesocorticolimbic dopamine system
--> implicated in the drug and natural reward circuitry of the brain
Reticular formation
- plays a central role in states of consciousness like alertness and sleep
- projects to the cerebral cortex + thalamus
Thalamus
- regulation of consciousness, sleep, and alertness
- relays (weiterleiten) motor and sensory signals to the cerebral cortex
Meninges
- protective tissue of the brain
- consists of three different types of layers
- -> Dura mater
- -> Arachnoid membrane
- -> Pia mater
Dura mater
most outer layer, thick and tough
- dural folds
- -> Falx: separates hemispheres
- -> Tentorium: separates cerebrum from cerebellum
Substructures of the Basal Ganglia
- putamen
- caudate nucleus
=> dorsal striatum
- nucleus accumbens (NAC)
- olfactory tubercle
=> ventral striatum
Longitudinal Fissure
divides left and right hemispheres
Basic functions of the brain
Division according to capalbo - Knowledge clip
Front part --> complex functions Middle part --> responds to the back Back part --> visual Upper part --> more complex Lower part --> basic bodily functions
Supplementary motor area
planning of movement