Which describes the response of the voltage-gated channels when an axon is stimulated to threshold?
A. K+ channels open before the Na+ channels.
B. Na+ channels are activated and then inactivated.
C. K+ channels open at the same time as the Na+ channels.
D. K+ channels are opened when Na+ binds to the channel.
E. K+ influx causes Na+ channels to inactivate.
B
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How are primate teeth specialized?
A) The chewing teeth are often highly specialized, but the front teeth are unspecialized. B) The back teeth are completely absent, allowing for the primate’s distinctive flat face. C) The front teeth are completely absent, allowing for the primate’s distinctive flat face. D) The front teeth are often highly specialized, but the chewing teeth are unspecialized.
The symptom of shin splints is ________
A) Pain in the tibia B) Bruising of the shins C) Swelling in the wrist D) Patellar displacement
A BMI of 27.3 is considered ____.
Select one: A. normal B. overweight C. obese D. anorexic
What would one consequence be if a man suffers an injury to his cremaster muscle?
A. Sterility B. An undescended testis C. A smooth scrotal sac D. Erectile dysfunction