One of the periodontal ligament functions is to provide nutrients through the blood vessels.
Answer the following statement true (T) or false (F)
True
The periodontal ligament contains nerves, blood, and lymph vessels. Its function is to produce cementum, stimulate bone resorption, provide sensation upon pressure to the tooth, and provide nutrients through the blood vessels.
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A male driver was ejected from his vehicle after it rolled several times at a high rate of speed. As you approach the patient you note that he is unresponsive and struggling to breathe. He also has a laceration to the left side of his face and multiple contusions to his legs. After assigning another EMT to take manual in-line spinal stabilization, what should you do?
A) Start positive pressure ventilation. B) Insert an oropharyngeal airway. C) Apply a properly sized cervical collar. D) Open the airway using the jaw-thrust maneuver.
Which is referred to as the pacemaker of the heart?
a. bundle of His b. Purkinje fibers c. AV node d. sinoatrial node