Nervous and sensory systems Flashcards
Where is the spinal cord located?
The spinal cord runs lengthwise inside the vertebral column (the spine)
The spinal cord conveys information
To and from the brain. It generates basic locomotion
The spinal cord act independently of the brain as simple nerve circuits? TRUE OR FALSE
True. Produces reflexes
What are reflexes?
The body’s automatic responses to certain stimuli
What is cephalization?
It is an evolutionary trend towards sensory neurons and interneurons at the anterior of the body
PNS
Peripheral nervous system carries information into and out the CNS
Annelids and arthropods have segmentally arranged clusters of neurons called
ganglia
In vertebraes, the CNS is made up of
The brain and spinal cord
In vertebrae, the PNS is made up of the
Nerves and ganglia
Vertebrates and most invertebrate have the glial cells also called glia. These cells
Nourish, support, and regulate neurons
Embryonic radial glial cells
Form tracks along which newly formed neurons migrate
Atrocytes (star-shaped) glial cells
Participate in formation if the blood brain barrier. Prevents substances from entering the CNS
The brain and spinal cord contain
Gray and white matter
Gray matter
Consists primarily of neuron cell bodies
White matter
Consists of bundled axons
