Asymmetric chest wall movement is characterized by:
A) chest rise that is minimally visible.
B) one side of the chest moving less than the other.
C) alternating movement of the chest and abdomen.
D) a part of the chest wall that bulges during exhalation
Answer: B) one side of the chest moving less than the other.
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Select the correct statement about the neural mechanisms of respiratory control.
A) The pons is thought to be instrumental in the smooth transition from inspiration to expiration. B) The dorsal respiratory group neurons depolarize in a rhythmic way to establish the pattern of breathing. C) The pontine respirator group (PRG) continuously stimulates the medulla to provide inspiratory drive. D) The ventral respiratory group is contained within the pons.
A strong acid is one that _____ and an example is _____
A) gives off less H+; H3PO4 B) ionizes less completely; H2SO4 C) ionizes more completely; H2CO3 D) ionizes more completely; HC1
All smooth muscle is myogenic
Indicate whether the statement is true or false
When repolarization of a neuron is complete, the
A. neuron dies. B. neuron regenerates. C. cell no longer has a potential difference across its membrane. D. original polarity of the neuron is restored. E. neuron is no longer excitable.