What is formed when two or more different elements combine by sharing electrons?
a. proton
b. chemical
c. ion
d. compound
d
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Which of these substances is listed as having a "very high" dependence potential?
A. Alcohol has moderate B. Marijuana has moderate to low C. LSD has very low D. Crack cocaine
Membrane potential
a. refers to a separation of charges across the membrane or to a difference in the relative number of + and - charges in the ECF and ICF. b. is measured in units of millivolts with the sign always designating the charge on the outside. c. is less at the equilibrium potential for K+ than at resting membrane potential. d. cannot be measured easily. e. all of these answers.
The contraction of the arrector pili
A. does not affect the position of the hair relative to the epidermis. B. pulls the follicle into a more oblique angle in relation to the skin surface C. pulls the follicle into a more perpendicular position in relation to the skin surface
The sural region is ________ to the crural region
A) superior (proximal) B) inferior (distal) C) anterior D) posterior