Exam 1 Flashcards
Lobe of the brain important for auditory information and language comprehension
Temporal
Ridge in superior parietal lobe that plays a role in writing
Supramarginal Gyrus
Groove that separates temporal lobe from the frontal lobe
Lateral sulcus
Area in the left cerebrum important important for motor movements of speech
Broca’s area
Separates the two hemispheres of the brain
Longitudinal fissure
Region between Broca’s and Wernicke’s area that is vital for language functions
Zone of Language
Lobe of the brain important for perception, pressure, touch, etc
Parietal
Subcortical structure important for movements and learning
Basal ganglia
Area in left cerebrum important for written and spoken language comprehension
Wernicke’s area
Ridge in the temporal lobe important for hearing functions
Heschl’s gyrus
Groove that separates frontal lobe from parietal lobe
Central fissure
Ridges on the surface on the brain
Gyrus
Lobe of the brain that plays the role in motor, speech, and language functions
Frontal
Lobe of the brain important for vision
Occipital
Structure that lies behind the brainstem and coordinates muscle movements
Cerebellum
Ridge located in the parietal lobe and plays role in naming, reading, and writing
Angular Gyrus
Brain cell, smallest unit of brain
Neuron
Central part of neuron surrounded by membrane that nutrients can enter
Cell body
Extensions from cell body
Number ranges from 1 to many
RECEIVES info/impulses
Dendrite
Long extension from cell body
TRANSMITS info/impulses AWAY from cell body
Axons
Junctions on axon that help speed up neural transmission
Nodes of Ranvier
Fatty coating on axon
Provides insulation + helps speed up neural transmission
Myelin sheath
sends MOTOR signals FROM BRAIN to body (periphery)
Efferent neurons
sends SENSORY signals FROM BODY (periphery) to brain
Afferent neurons
Communication between two neurons
Synapse
Neuron SENDS signals to next neuron
Presynaptic neuron
Neuron RECEIVES signal from previous neuron
Postsynaptic neuron
Approximately 30
Includes: Dopamine, Acetylcholine, Serotonin, Adrenaline
Neurotrasmitter
End portion of neuron
Axon Terminal
Tiny pockets on axons that hold neurotransmitters
Synaptic vesicles
Gap between axon terminals (or presynaptic neuron) + dendrite (of postsynaptic neuron)
Synaptic cleft
Cluster of neuron with CNS
Nucleus
Cluster of neurons within PNS
Ganglion
Layer of brain consisting of myelinated neurons. White= fatty sheath
White matter
Located in lowest part of brainstem
Medulla
Functions: contains CN nuclei for CN VIII through XII. Hearing, tongue and palatal functions, breathing, blood pressure, speech movements
Medulla
Location: between medulla and midbrain
Pons
Functions: CN V, VI, VII.
Facial movements, hearing, balance
Pons
Location: uppermost part of brainstem
Midbrain
Functions: CN III, IV
Eye movements, postural reflexes, coordination of visual and auditory reflexes
Midbrain
Location: behind brainstem
Outer layer of gray matter; inner layer of white matter
Cerebellum
Consists of two large lateral hemispheres
Cerebellum
Functions: integration and coordination of muscle tone and cognitive functions
Cerebellum
Lesions: Ataxia
(lack of coordination and balance)
Cerebellum
Ataxia
Lack of coordination and balance
Location: includes the region within the cerebral hemispheres
Consists of diencephalon (thalamus + hypothalamus) and basal ganglia
Subcortical Gray Matter