Life 47- The Mammalian Nervous System Flashcards
(42 cards)
Nucleus
1) In cells, the centrally located compartment of eukaryotic cells that is bounded by a double membrane and contains the chromosomes.
2) In the Brain, an identifiable group of neurons that share commone characteristics or functions.
Midbrain
One of the three regions of the vertebrate brain. Part of the brainstem, it serves as a relay station for sensory signals sent to the cerebral hemisphere
Associative learning.
A form of learning in which two unrelated stimuli become linked to the same response
Procedural memory
Memory of motor tasks. Cannot be consciously recalled and described.
Thalamus
A region of the vertebrate forebrain; involved in integration of sensory input.
Brainstem
The portion of the vertebrate brain between the spinal cord and the forebrain, made up of the medulla, pons, and midbrain
Sympathetic nervous system
The division of the autonomic nervous system that works in opposition to the parasympathetic nervous system.
Electroencephalogram (EEG)
A graphic recording of electrical potentials from the brain.
Declarative memory
Memory of people, places, events, and things that can be consciously recalled and described.
Parasympathetic nervous system
The division of the autonomic nervous system that works in opposition to the sympathetic nervous system
Forebrain
The region of the vertebrate brain that comprises the cerebrum, thalamus, and hypothalamus
Receptive field
The area of visual space that activates a particular cell in the visual system
Cerebellum
The brain region that controls muscular coordination; located at the anterior end of the hindbrain
Autonomic nervous system (ANS)
The portion of the peripheral nervous system that controls such involuntary functions as those of guts and glands.
Reticular system
A central region of the vertebrate brainstem that includes complex fibre tracts conveying neuronal signals between the forebrain and the spinal cord, with collateral fibres to a variety of nuclei that are involved in autonomic functions, including arousal from sleep
Aphasia
A deficit in the ability to use or understand words
Angular gyrus
A part of the human brain believed to essential for integrating spoken and written language.
Primary motor cortex
The region of the cerebral cortex that contains motor neurons that directly stimulate specific muscle fibres to contract.
Slow-wave sleep
A state of deep, restorative sleep characterised by high-amplitude slow waves in the EEG
White matter
In the central nervous system, tissue that is rich in axons.
Amygdala
A component of the limbic system that is involved in fear and fear memory
Pons
Region of the brainstem anterior to the medulla
Broca’s area
A portion of the human brain essential for speech. Located in the frontal lobe just in front of the primary motor cortex.
Limbic system
A group of evolutionarily primitive structures in the vertebrate telecephalon that are involved in emotions, drives, instinctive behaviours, learning, and memory.
