Parkinson's disease is the result of
A) inadequate production of GABA by neurons in the basal nuclei.
B) decreased levels of acetylcholine from neurons in the substantia nigra.
C) inadequate production of dopamine by substantia nigra neurons.
D) hyperactivity of the limbic system.
E) weak response of the red nuclei of the midbrain.
Answer: C
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Which of the following nerves is labeled D in the diagram?
a) phrenic nerve b) ulnar nerve c) intercostal nerve d) femoral nerve e) tibial nerve
Tooth ________________________________________ is the hardest substance in the body
Fill in the blank(s) with correct word
Which of the following statements correctly describes the parent cell and daughter cells in mitosis?
A. In mitosis, the parent cell divides to become two different daughter cells. B. In mitosis, the parent cell divides to become one identical daughter cell. C. In mitosis, the parent cell divides to become two identical daughter cells. D. In mitosis, the parent cell divides to become two identical sex cells.
The TMJ (temporomandibular joint) is composed of the convex upper condyle of the mandible, which fits into a concave surface of the temporal bone. The joint allows the mandible to swing uniaxially, producing the up-and-down motion of chewing. The TMJ is classified as a ________ joint.
Fill in the blank(s) with the appropriate word(s).