Intro to Neuroanatomy Flashcards
Ipsilateral
Same side of the body
Contralateral
Different side of the body
Afferent
Going towards
Efferent
Going away from
Neurons
Most basic functional unit
Convey information via electrical signals
Receive, Integrate, Transmit
3 main parts of neuron
Cell body, axon, dendrites
Afferent neurons
Sensory neurons
Carry information from receptors to CNS
Efferent neurons
Motor neurons
Carry information from CNS to peripheral effectors
Interneurons
Link afferents and efferents
Only found in the CNS
Role of dendrites
Receive information in order to integrate it into cell body
3 types of neurons
Bipolar
Psuedo-unipolar
Multipolar
Bipolar
2 processes extending from cell body (axon each side)
Specific sensory - e.g. eye and auditory
Pseudo-unipolar
Seems like a bulge of the axon which only has 1 process extending
Information can bypass the cell body
Typically sensory neurons
Multipolar
Many processes extending from the cell body
Often motor
Two divisions of nervous system
CNS and PNS
Two divisions of PNS
Somatic and autonomic
Somatic control
Control of external actions of skin and muscles
Autonomic control
Controls internal activities of organs and glands
Two divisions of autonomic nervous system
Sympathetic (fight or flight) and parasympathetic (relaxation)