If an axon has an absolute refractory period of 2 msec, what is the maximum frequency of action potential (AP) production in that neuron?
What will be an ideal response?
X AP/2 msec × 1000 msec/1 sec = 500 APs per second.
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An organism that produces disease is known as a(n) ________
A) Pathogen B) Organelle C) Centriole D) Magnetosome
Answer the following statements true (T) or false (F)
1. The wall of the urinary bladder consists of elastic fibers and voluntary muscles. 2. The trigone is formed by the entry of the two ureters and the exit of the urethra. 3. The trigone is unique in the bladder wall because it is the only part with rugae. 4. The urinary meatus is part of the urethra. 5. The urethra is the tube leading from the bladder to the outside.
When abundant acidic chime fills the duodenum, secretin is released [true fact]. Secretin then causes the stomach to stop sending anymore chime, and directly causes the pancreas to release bicarbonate-rich juice.
a. true b. false
Oxygen (atomic number 8 ) requires how many additional electrons to fill its outer electron shell?
A) 1 B) 2 C) 4 D) 6 E) 8