Central Nervous System Flashcards
What does the central nervous system consist of?
The brain and spinal cord
What is the CNS responsible for?
Movement, interpreting sensory info, maintaining homeostasis, and other higher mental functions.
Motor functions include…
the stimulation of muscle cells contraction or a gland secreation (function of PNS)
Sensory function includes…
Detection of sensations within and outside of the body (function of the PNS)
Integrative functions include…
decision-making processes (exclusive function of CNS)
4 Major parts of the brain?
- Cerebrum 2. diencephalon 3. cerebellum and 4. Brainstem
Responsibilities of the cerebrum…
Higher mental function (learning, memory, personality, thinking, and conscience); sedation and movement
Responsibilities of the diencephalon…
Process, integrate, and relay info parts of the brain; homeostatic functions, regulation of movement, and biological rhythms
Responsibilities of the cerebellum…
Planning and coordination of movement
Responsibilities of the brainstem…
Basic involuntary homeostatic functions, certain reflexes, monitoring movement, and integrating and relaying info to other parts of the nervous system
The central canal of the spine is…
Filled with cerebrospinal fluid
White matter consists of…
myelinated axons
Bundles of white matter are?
Tracts (receive input from and send output to clusters of cell bodies and dendrites in gray matter (nuclei))
Gray matter contains…
neuron cell bodies, dendrites, and unmyelinated axons
Cerebrum grooves are called?
Sulci
