LIFESCI 2 Lecture Notes - Lecture 11: Brainstem, Mirror Image, Neurosurgery
Document Summary
Interneurons: process information: afferent neurons: send signal b, efferent neurons: sending command, regardless of type of action, neurons are what mediate it. Neural pathway: stimulus is picked up very quickly, sent to the nervous system, afferent neurons send signal to interneurons on spinal cord (typical synapses) c. d. and information is sent out to muscles (another neuron, organ, etc) In each neuron, there"s a series of action potentials and yet the response is extremely quick. In picture there"s skin receptors, a single sensory neuron, interneuron, motor neuron, and effector but reality is that many neurons are bundled & working together: there are no functions in the body mediated by a single neuron. Organization of the nervous system: cns a. i. The brain sends efferent commands that could be somatic or autonomic a. ii. 1. Ex. too much blood flow tells heart to slow down: peripheral nervous system b. i. Any other location of nervous tissue besides brain and spinal cord b. ii.
