If a single EPSP depolarizes the initial segment from a resting membrane potential of -70 mV to -65 mV, and threshold is at -60 mV, will an action potential be generated? Explain your answer
A) Yes, because depolarization reached threshold.
B) No, because depolarization did not reach threshold.
C) Yes, because depolarization did not reach threshold.
D) No, because depolarization reached threshold.
E) Yes, because all stimuli to a resting membrane will cause an action potential.
Answer: B
You might also like to view...
Select the correct statement about the physical factors influencing pulmonary ventilation.
A) A decrease in compliance causes an increase in ventilation. B) A lung that is less elastic will require less muscle action to perform adequate ventilation. C) As alveolar surface tension increases, additional muscle action will be required. D) Surfactant helps increase alveolar surface tension.
A person normally has two alleles of a gene because
A) all genes come in only two varieties. B) there isn't enough DNA to accommodate more than this. C) one allele of a gene is carried on each of two homologous chromosomes. D) DNA only comes in two forms.
Which type of skin cancer appears as a scaly reddened papule and tends to grow rapidly and metastasize?
A) Melanoma B) Squamous cell carcinoma C) Basal cell carcinoma D) Adenoma
The ________ pituitary is a neural extension of the hypothalamus
Fill in the blank(s) with the appropriate word(s).