Although extremely painful, injuries to the ________ spine are typically neurologically insignificant.
A) lumbar
B) coccygeal
C) thoracic
D) cervical
Answer: B) coccygeal
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If a person has been fully immunized as a child, there is no need for vaccines during adulthood.?
Indicate whether the statement is true or false
The bacterium that causes tetanus produces a toxin that affects the central nervous system and skeletal muscles, producing powerful tetanic contractions of the skeletal muscles. The toxin probably acts by
A) Increasing the amount of acetylcholinesterase in the synapse. B) Making the cells less permeable to sodium ions. C) Increasing the amount of potassium ion in the intercellular fluid. D) Making the cell membranes more permeable to calcium ion. E) Competing with acetylcholine for receptors at the motor end plate.
In males and females, the process of arousal is under the control of
A) the parasympathetic nervous system. B) the sympathetic nervous system. C) both the parasympathetic and sympathetic nervous systems. D) the central and sympathetic nervous systems. E) the central nervous system only.
A skydiver's parachute fails to deploy. After some struggle, his reserve chute deploys in time to save his life. However, his landing is harder than normal, and he feels his knee slightly hyperextend. He shakes it off and goes about his normal routine. Later that day, he begins experiencing knee pain. Two days later, he notices that his knee "pops" when he crouches and soon discovers he has dislocated his femur on the knee. What muscle was likely injured initially?
A. Soleus B. Popliteus C. Sartorius D. Quadriceps femoris E. Tensor fasciae latae