Division of the nervous system and neural pathways Flashcards
(13 cards)
What are the 2 divisions of the nervous system
The cns and pns
What does the cns consist of
The brain and spinal cord
What does the pns consist of
The somatic and autonomic ns
What does the SNS contain
Sensory and motor neurons
What do the sensory neurons do
Take impulses from sense organd to cns
What do motor neurons do
Take impulses from cns to muscles and glands
What does the Ans consist of
The sympathetic and parasympathetic systems
What action do they do
Anatognistic
What does the sympathetic system do
Speeds up heart rate and breathing rate while slowing down peristalsis and intestinal secretions
What does the parasympathetic system do
Slows down heart rate and breathing while speeding up peristalsis and intestinal secretions
What happens in a converging neural pathway
Impulses from several neurons travel to one neuron, increasing sensitivity to excitatory or inhibitory signals
What happens in a diverging neural pathways
Imupsles from one neuron travel to several neurons , affecting more than one destination at the same time
What happens in a reverberating pathway
Neurons later in the pathway link with earlier neurons sending the impulse back through the pathway, allowing repeated stimulation of pathway
