Identify the sensory inputs that would stimulate the reticular activating system
a darkened room
a set of silencing headphones
breakfast odors
smelling salts
a ringing fire alarm
_____
a darkened room
_____
a set of silencing headphones
__X__
breakfast odors
__X__
smelling salts
__X__
a ringing fire alarm
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At an excitatory chemical synapse between two neurons,
A. there is increased permeability of the postsynaptic cell to both Na+ and K+. B. a small hyperpolarization of the postsynaptic membrane occurs when the synapse is activated. C. an action potential in the presynaptic neuron always causes an action potential in the postsynaptic neuron. D. excitation occurs because K+ enters the postsynaptic cell. E. action potentials spread through gap junctions between cells.
This imaging method requires the injection of short-lived radioisotopes that have been tagged to substances such as glucose.
-MRI -PET scan -CT scan -sonogram
Which best describes the reticular formation of the brain?
A. It integrates information from all regions of the CNS, and incorporates the mechanisms that regulate sleep and wakefulness. B. It is the primary synaptic relay station for sensory information entering the CNS. C. It is mainly involved in motor coordination and balance. D. It is primarily responsible for visual perception. E. It is the master endocrine gland of the brain.
Which organ system provides support, protection of soft tissue, mineral storage, and blood formation?
A) integumentary B) muscular C) skeletal D) nervous E) endocrine