We are constantly bombarded by a variety of stimuli inside and outside of our bodies. Why are we not overwhelmed by sensory information?
A) We do not have receptors for most stimuli.
B) Stimuli are blocked from the receptors by our immune systems.
C) Most stimuli are external to our bodies and we have very few exteroceptors on the outside of the body.
D) A particular receptor type can have different sensitivities to different stimuli.
E) A very tiny percentage of incoming sensory information is received by the cerebral cortex.
E
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The ________ is the layer of the heart wall composed of cardiac muscle tissue.
Fill in the blank(s) with the appropriate word(s).
The boundary of the retina is called the ________.
Fill in the blank(s) with the appropriate word(s).
The ribs articulate with the
A) spinous processes of the vertebrae. B) transverse processes of the vertebrae. C) laminae of the vertebrae. D) pedicles of the vertebrae. E) vertebral foramen.
Where is the greatest concentration of cones located?
A. In the macula lutea B. In the optic disc C. In the fovea centralis D. In the posterior retina E. In the optic nerve