A slight sunburn is an example of a ________ burn.
A. second-degree
B. fourth-degree
C. partial-thickness
D. third-degree
E. first-degree
Answer: E
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All the veins of the systemic circulation eventually drain into the
a) superior vena cava. b) inferior vena cava. c) coronary sinus. d) superior and inferior vena cava. e) superior and inferior vena cava and coronary sinus.
Acetylcholine is a neurotransmitter frequently used in the autonomic nervous system
Indicate whether this statement is true or false.
The respiratory zone of the tracheobronchial tree includes which of the following?
A. Primary bronchi B. Larynx C. Tertiary bronchi D. Alveoli E. Trachea
Too much acetylcholinesterase causes
A. continuous stimulation of the muscle fiber. B. rapid degradation of acetycholine. C. voltage-gated calcium ion channels opening in the presynaptic terminal. D. an increase in sodium uptake by the muscle fiber. E. exocytosis of synaptic vesicles.