B10 The human nervous system Flashcards
1
Q
how does your eye focus on a distant object?
A
the collard muscles relax
the dispensary ligaments are pulled right
the lens id then pulled thin and only slightly refracts light
2
Q
how do synapses work
A
an electrical impulse arrives at the end of a neuron
a chemical (neurotransmitter) is released
the chemical diffuses across the synapse and binds with receptor molecules on the membrane of the next receptor
