Foundations of the Nervous System
Peripheral nervous system
-70mV
The lobe responsible for motor planning, personality, logical reasoning, and home to the precentral gyrus
What is the frontal lobe
This sensory receptor for hearing is located in the cochlear duct
What is the Spiral organ or Organ of Corti
Cell bodies of this division are located in the lateral horns of T1-L1/L2
What is the Sympathetic/thoracolumbar division
The somatic motor system has this type of effector
What is skeletal muscle
A sudden influx of sodium across the neuron's plasma membrane large enough to surpass the threshold, results in this
What is depolarization
This lobe processes visual sensory information
What is the occipital lobe
What is the dorsal root ganglion
Cell bodies of this division are located in the brainstem and sacral region of the spinal cord
What is the parasympathetic nervous system
This star-shaped glial cell supports neurons and helps form the blood-brain barrier
What is an astrocyte
Voltage gated sodium channels are CLOSED and voltage gated potassium channels are OPEN during this phase of an action potential
What is repolarization
The structure helps maintain balance and coordination, learning complex tasks, and fine motor coordination
What is the cerebellum
Upper motor neurons travel from the motor cortex to synapse with this type of neuron in the spinal cord
What is a lower motor neuron
What is contraction (flexors); relaxation (extensors)
A presynaptic neuron, neurotransmitters, synaptic cleft, and a postsynaptic neuron form this type of synapse
What is a chemical synapse
This active transport mechanism is active to maintain resting membrane potential
What is the sodium potassium pump
This structure contains several cranial nerve nuclei that process functions necessary for survival
What is the neuromuscular junction
All preganglionic sympathetic and parasympathetic neurons are ___ and release the NT _____
What is cholinergic; acetylcholine
What is the autonomic nervous system
What are sodium and potassium
This structure helps remember day-to-day tasks, dates such as birthdays and anniversaries, and converts short term memories into long ones
What is the hippocampus
The cranial nerve that is responsible for cutaneous sensation to the face and motor to the muscles of mastication
What is the trigeminal nerve
What is a reflex arc