An action potential
A) lasts for 1-2 minutes.
B) propagates along the actin myofilaments.
C) is all or none.
D) is always below threshold.
Ans: C) is all or none.
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In reptiles and birds, the evolution of the _____________ removed the dependence on water and allowed complete transition to life on land
Fill in the blank with the correct word.
The medical term for producing or containing pus is:
A) purulent B) furuncle C) gangrene D) diffuse
The ________ ligament is a sheet of mesentery that attaches the liver to the anterior abdominal wall.
Fill in the blank(s) with the appropriate word(s).
Which of the following is not true of the respiratory irritant receptors?
A. Stimulation of these receptors can lead to coughing or sneezing. B. Sensory impulses from the irritant receptors are transported by the vagus nerve. C. Sensory impulses from the irritant receptors are transported to the dorsal respiratory group. D. Stimulation of the respiratory irritant receptors results in dilations in the bronchial tree. E. All of these are true of the respiratory irritant receptors.