Describe how nerve impulses are generated and conducted down an axon. Include the following steps: Opening of Na+ and K+ channels on axon. Opening of Na+ Channels allowing Na+ to enter cell body(soma). Threshold. Neuro-transmitters diffuse across synapse. Stimulus to dendrite. Release of neuro-transmitters from terminals

Often, caries will develop in an area of the tooth that's not readily accessible. which cavity preparation form defines this? a. retention b. resistance c. outline d. convenience

Neelaredoxin is a 15-kda protein that is a gene product common in anaerobic prokaryotes. it has superoxide-scavenging activity, and it is constitutively expressed. in addition, its expression is not further induced during its exposure to o2 or h2o2 (silva, g., et al. 2001. j. bacteriol. 183: 4413–4420). which of the following statements best describes neelaredoxin synthesis? a-neelaredoxin is produced at all times; levels are constant even when exposed to o2 or h2o2.b-neelaredoxin is produced at all times; exposure to o2 or h2o2 increases expression.c-neelaredoxin is produced at all times; exposure to o2 or h2o2 decreases or prevents expression.d-neelaredoxin is only produced when there is exposure to o2 or h2o2.

Did you know that a blue wales tongue weighs more than an elephant?