chapter 12 nervous tissue Flashcards
what are components of Central nervous system?
Brain and Spinal cord
What are the components of the Peripheral nervous system?
Ganglion and nerves
what are the 3 divisions of the peripheral nervous system?
somatic, enteric and autonomic
what does the somatic nervous system control?
conscious perception and VOLUNTARY motor response
what does the autonomic nervous system control?
INVOLUNTARY control of the body
what does the enteric nervous system control?
smooth muscle and glandular tissue in your digestive system
preganglionic neurons and postganglionic neurons, carry signal TOWARD the CNS
sensory neurons of the sympathetic nervous system
involved in the fight or flight response, carry signals AWAY from the CNS to glands and muscles
motor neurons in the sympathetic nervous system
registers the change in environment to keep homeostasis
sensory function
involves consciousness, language and memory
Integrative function
transmitting signals from the brain and spinal cord to muscles and glands, enabling both voluntary and involuntary movements and bodily functions
motor function
Excitable neutral cell that transfers nerve impulses
neurons
non- neuronal cells that support and protect neurons in the nervous system
neuroglia
electrically excitable cells in the body
neurons, skeletal muscle, smooth muscle and cardiac muscle
cell body of a neuron, contains the nucleus and other essential organelles
Soma
The fiber that connects a neuron with its target
Axon
responsible for receiving most of the input from other neurons
dentrite
the branches ends of the axon that form synapses with other cells
axon terminals
specialized junctions where neurons communicate with each other or other cells, allowing for the transmission of signals
synapses
a fatty substance that insulates the axon, speeding up the transmission of electrical signals
myelin
gaps in the myelin sheath that allow for faster conduction of electrical impulses
nodes of ranvier
what is the Rough ER called in the neuron cell body called?
Nissl body