Chemical substances released by neurons are known as:
A. junctions
B. synapses
C. neurotransmitters
D. neurons
c
Rationale: Neurons release chemical substances called neurotransmitters that allow communication from one nerve cell to another.
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Many bones function as levers that change the magnitude and direction of the forces created by the skeletal muscles
Indicate whether the statement is true or false
After reinsertion of a tracheostomy tube (TT), manual ventilation is difficult. What immediate action should be taken?
a. Reattempt insertion. b. Perform a cricothyroidotomy. c. Remove the tube, and insert another tra-cheostomy tube. d. Manually ventilate the patient through the upper airway.
____ is defined as an increased amount of circulating solid blood components.
A. Polycythemia B. Methemoglobinemia C. Congenital hemolytic anemia D. Sickle cell anemia
______________________ is bloody sputum or bleeding arising from the respiratory tract
A. Empyema C. Hypoxia B. Hemoptysis D. Pleuritis