The brachiocephalic veins are formed by the
a: Internal jugular veins
b: Right sigmoid sinus
c: Left sigmoid sinus
d: Subclavian veins
e: Traight sinus
A. a, b, e
B. a, c, d
C. b, c, e
D. a, d
E. b, d, e
D
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An end plate potential is an event that involves a gain of
A. positive charge along the inside of the cell membrane, as potassium rapidly enters. B. positive charge along the inside of the cell membrane, as sodium rapidly enters. C. negative charge along the inside of the cell membrane, as potassium rapidly enters. D. negative charge along the inside of the cell membrane, as sodium rapidly enters.
Match the type of membrane transport with the appropriate characteristic: Secondary active transport.
A)Driven indirectly by energy stored in concentration gradients of ions B)Random motion of a substance resulting in movement from an area of high to lower concentration C)Movement of a substance that utilizes a carrier; energy comes directly from hydrolysis of ATP D)A passive process utilizing a protein carrier or channel
What sequence of RNA would pair with the DNA sequence TAC-GCG?
A. CGC-GTA B. ATG-CAC C. UTG-CGC D. AUG-CGC
When repolarization of a neuron is complete, the
A. neuron dies. B. neuron regenerates. C. cell no longer has a potential difference across its membrane. D. original polarity of the neuron is restored. E. neuron is no longer excitable.