Cerebral Hemispheres
Primary motor cortex
What is the frontal lobe?
What are the two main divisions of the nervous system?
Central Nervous System (CNS) and Peripheral Nervous System (PNS)
What part of the neuron receives incoming signals?
Dendrites
This type of brain matter contains neuron cell bodies and appears grayish in imaging.
What is gray matter?
What is CN XIII?
"First cortical location for processing of auditory signals"
What is the primary auditory cortex?
What structures make up the CNS?
Brain and spinal cord
What part of the neuron carries signals away from the cell body?
Axon
The fatty substance that gives white matter its color and increases signal speed.
What is myelin?
This nerve controls facial expression, aiding in speech production.
What is CN VII
This area is said "to have a central role in the planning and organization of motor behavior"
What is Broca's area?
What are the three divisions of the PNS?
Somatic, autonomic, and enteric nervous systems
What is the insulating layer around the axon called?
Myelin sheath
The organized mapping of body parts onto the cortex is called this.
What is somatotopic organization?
This nerve allows you to see by carrying visual information to the brain.
What is CN II?
Primary visual cortex
What is the occipital lobe?
Which division of the autonomic nervous system is responsible for “fight or flight”?
Sympathetic nervous system
What are the steps of a reflex arc in order ?
Stimulus → receptor → sensory neuron → interneuron → motor neuron → effector
These are clusters of neuron cell bodies located outside the CNS.
What are ganglia?
What is CN X?
"Left hemisphere section receives input from the body's right side"
What is the primary somatosensory cortex?
Which division is known as the “second brain” and controls digestion?
Enteric nervous system
What is the difference between afferent and efferent tracts?
Afferent = sensory (ascending), Efferent = motor (descending)
This term describes sensory information traveling toward the CNS.
What is afferent?
This nerve controls jaw muscles, opening and closing the mouth.
What is CN V?