Which statement describes slow depolarization?
A) Allows dehydrated sodium ions to enter the negatively charged axoplasm causing the threshold for firing threshold
B) Allows release of the sodium ions from the receptor sites in the ion channels allowing negative ions to enter the axoplasm
C) Occurs until the axoplasm has depolarized 15 to 20 mV to reach -50 to -55 mV, which is the firing threshold
D) Occurs until the calcium ions rebind with the receptor sites to reach firing threshold at -50 to -55 mV
C
You might also like to view...
Children exhibit great bursts of energy followed by sudden profound fatigue because:
a. they lose interest in their current activity. b. they have attention deficit disorder. c. they need to take a nap. d. they have fewer energy reserves than adults.
Puncture wounds have a high risk of:
A) internal bleeding. B) shock. C) infection. D) cavitation.
________________ energy is created when electricity is transformed into mechanical energy to high-frequency vibration and friction
A. Ultrasonic C. Cold thermal B. Laser D. Electromagnetic
A urethral or ureteral catheter that is left in place is a(n) ________ catheter
A. inguinal C. reverse B. indwelling D. permanent