Ch 1 - Online Review Flashcards
What is neuroscience
the quest to understand the nervous system
Molecular neuroscience investigates
the chemistry and physics involved in neural function
Cellular neuroscience considers what
distinctions among diff types of cells in the NS and how each cell type functions
Systems neuroscience investigates
groups of neurons that perform a common function
Behavioral neuroscience examines the
interaction among systems that influence behavior
Cognitive neuroscience covers the fields of
thinking, learning, and memory
What type of NS will we focus on
Systems and behavioral
4 regions of the NS
peripheral, spinal, brainstem and cerebellar (infratentorial) and cerebral (supratentorial)
Peripheral NS
all nervous system structures not encased in bone
Central NS
Spinal, brainstem and cerebellar region and cerebral region
3 planes - sagittal
separates right and left
3 planes - transverse
separates superior and inferior
3 planes - coronal/frontal
separates anterior and posterior
Gray matter areas of the CNS primarily contain
neuron cell bodies and
dendrites
Information is integrated in gray matter
White matter contains
axons and myelin
Axons are
projections of nerve cells that usually convey info away from the cell body
Myelin consists of cells that
insulate electrical conduction of axons
Peripheral region of NS Afferent vs. Efferent
Afferent axons carry info toward CNS
Efferent axons carry info away from CNS
Spinal region of nervous system - each side of gray matter is subdivided into
dorsal, lateral, and ventral horns
Dorsal horns contain cell bodies of
motor neurons, interneurons, and endings of sensory neurons
Central gray matter is divided into ___
White matter is divided into ___
grey - horns and a commissure
white - columns
4 structures of cerebrum
Thalamus
Hypothalamus
Epithalamus
Subthalamus
How many lobes in each hemisphere
6
Basal ganglia is often refereed to as
subcortical structure