Ch. 9 Anatomy Vocab Crossword

nerve cells
information in the form of electro. chemical changes
rounded area on neurons
extension of cell body that receive electro. chemical messages
extensions that send electro chemical info.
nervous tissue that provides physical support, insulation, and nutrients
consists of brain and spinal cord
composed of nerves and connects the CNS to other body parts
gather info. by detecting changes inside and outside the body
include muscles and glands whose actions are controlled or modified nerve impulses
controls skeletal muscle
mixture of proteins and lipids that form a white-ish insulating sheet around nerve fibers
support neurons and phagocytize bacterial cells
provide myelin sheath around axons in the brain and spinal cord
provide structural support, join parts by their cellular processes, and regulate concentrations of nutrients and ions
form an epithelial like membrane that covers specialized brain parts and form inner linings that enclose spaces in the brain
produce a myelin sheath around axons of neurons
a network of fine threads that form the cell body of a neuron
sheath that surrounds the myelin sheath
narrow gaps between schwann cells
type of neuron that has many processes arising from their cell body (1 axon, the rest dendrites)
type of neuron that have 2 processes, one arising from each of the cell body (1 axon, 1 dendrite)
type of neuron that have single processes extending from cell body that divide into 2 branches (peripheral process ad central process)
(afferent neurons) transmit nerve impulses from peripheral body parts into brain or spinal cord
(assosciation neuron) found entirely within the brain or spinal cord and transmit impulses from one part of the brain or spinal cord to another
(efferent neurons) transmit impulses out of the brain or spinal cord to effectors; control muscle contraction and secretions of glands
junction between two communicating neurons
potential difference between the region outside the membrane and inside the membrane