When the bladder of an infant is filled with urine, the
a. stretch receptors in the bladder wall are inhibited
b. parasympathetic nerve supplying the bladder is inhibited, allowing the bladder to relax
c. motor neuron supplying the external urethral sphincter is stimulated, causing the sphincter to open
d. motor neuron supplying the external urethral sphincter is inhibited, allowing the sphincter to open
e. parasympathetic nerve supplying the internal urethral sphincter is stimulated, causing the sphincter to close
D
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The space between neurons is called the neuronal space.
Answer the following statement true (T) or false (F)
A spinal nerve carries information from the CNS to effectors as well as information from receptors to the CNS. How could these nerves be classified functionally?
A. Sensory B. Mixed C. Motor
Which scientist experimentally demonstrated that blood circulates through the body?
A. Vesalius B. Galen C. Huang Ti D. Antony van Leeuwenhoek E. William Harvey
The optic disc is known as the blind spot because:
A) only cones populate the optic disc. B) photoreceptors are absent from the optic disc. C) only rods populate the optic disc. D) the fovea centralis prevents light from striking the optic disc.