What is the main source of the electrical potentials recorded from the scalp of a human subject? In other words, what are brainwaves /EEG? The natural current found in skin The movements of our eyes The summated activity of nerve cell action potentials and postsynaptic potentials The signals generated by the contraction of muscle fibers that lie under the scalp 2) A hyperpolarization/inhibition would be caused by which of the following? opening of chloride channels closing of chloride channels opening of sodium channels closing of sodium channels
Anatomy and Physiology of Special Sensory Organs
Sensory organs can be labeled as special sensory structures that permit sight, hearing, odor, and flavor. Sensory structures permitting proprioception, touch, thermal, and pain perception can be classified as more advanced sensory organs. The sensory neurons are trained to find out modifications in the external and internal conditions so that a person's body can react to that change. A stimulus is the first signal that is recognized by any sensory receptor of the body. Stimulus is an impulse generated when there is a change in the surroundings of a person. For example, a heated environment will alert the brain through the thermal sensory organs and generate a reflex accordingly.
Sensory Receptors
The human sensory system is one of the most complex and highly evolved structures, which processes a myriad of incoming messages. This well-coordinated system helps an organism or individual to respond to external stimuli, appropriately. The sensory receptors are an important part of the sensory system. These receptors are specialized epidermal cells that respond to external environmental stimuli. These receptors consist of structural and support cells that form the peripheral unit of the receptor and the neural dendrites which receive and detect the external stimuli.
-
What is the main source of the electrical potentials recorded from the scalp of a human subject? In other words, what are brainwaves /EEG?The natural current found in skinThe movements of our eyesThe summated activity of nerve cell action potentials and postsynaptic potentialsThe signals generated by the contraction of muscle fibers that lie under the scalp
2)
-
A hyperpolarization/inhibition would be caused by which of the following?opening of chloride channelsclosing of chloride channelsopening of sodium channelsclosing of sodium channels
-
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
