If a person exhibits spasticity when attempting to move voluntary muscles, and has tremors in the muscles when not attempting to move, what might be the cause of this condition?
What will be an ideal response?
The condition described is Parkinson's syndrome and is caused by damaged ascending tracts or dopamine-producing neurons. Loss of the inhibition produced by the dopamine causes the excitatory neurons to
become increasingly active, which produces the symptoms of the disease.
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Ankle extension is also called
A) dorsiflexion. B) inversion. C) eversion. D) plantar flexion. E) protraction.
Two deep muscles that produce eversion as well as plantar flexion of the foot are the ________.
Fill in the blank(s) with the appropriate word(s).
The segments of the nephron distal to the renal corpuscle are responsible for __________.
secretion of waste materials reabsorption of over 90 percent of water from the tubule reabsorption of useful organic substrates All of the listed responses are correct.
The brain is located in the ________ body cavities
A) dorsal and vertebral B) vertebral and cranial C) ventral and dorsal D) dorsal and cranial