Which one is necessary for the activity of respiratory center?
A: afferent signals from the pulmonary stretch receptor.
B: afferent signals from the proprioceptors in the respiratory muscle.
C: certain level of PCO2.
D: certain level of hypoxia.
E: certai level of H+
A: afferent signals from the pulmonary stretch receptor.
B: afferent signals from the proprioceptors in the respiratory muscle.
C: certain level of PCO2.
D: certain level of hypoxia.
E: certai level of H+
举一反三
- Which of the following can occur when PaCO2 is higher than the normal level? A: Primary metabolic acidosis B: Compensated metabolic alkalosis C: Primary respiratory acidosis D: Primary respiratory alkalosis E: Compensated respiratory alkalosis
- 2、To build core competence, a business should work from such aspects as（） A: strategic level B: organizational level C: technological level D: customer level
- Which description is correct about the deep tendon organ? A: parallel to the extrafugal fiber B: is a sensory receptor for muscle length C: protect the muscle from injury during contraction. D: in series with intrafusal fiber E: sensory signal is transmitted by II afferent nerve fiber
- Which description is correct about the deep tendon organ? A: paralle to the extrafugal fiber B: in series with intrafusal fiber C: is a sensory receptor for muscle length D: sensory signal is transmitted by II afferent nerve fiber E: protect the muscle from injury during contraction.
- Which one is not the characteristics of epidemiology ? A: Population level B: Start from the distribution C: Treatment only D: Comparision E: Prevention