The primary motor cortex
1.is activated by the readiness potential.
2.functions independently to control the movement of skeletal muscles.
3.is located on the post-central gyrus.
4.on each side of the brain controls the muscles on the ipsilateral side of the body.
5.All of these are correct.
1
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The ductus venosus is a fetal vessel that transports blood from the umbilical vein to the
A. inferior vena cava. B. superior vena cava. C. aorta. D. umbilical artery.
Where does growth in length occur?
A) 1 B) 2 C) 3 D) 4 E) 5
While playing softball, Sid pulls his hamstring muscle. As a result of the injury, he has difficulty extending and medially rotating his thigh. Which muscle(s) of the hamstring group did he probably injure?
The percentage of whole blood occupied by red blood cells is the
A) specific gravity. B) hematocrit. C) viscosity. D) pH. E) differential cell count.