Which of the following statements regarding a "dedicated line" is correct?
A. It is a constantly open line of communication that is under exclusive control of a single user.
B. It is a frequency that is used exclusively by EMTs to communicate with one another in the field.
C. It is a constantly open line of communication that cannot be accessed by outside users.
D. It is a designated frequency on a portable radio that provides direct access to medical control.
Answer: C. It is a constantly open line of communication that cannot be accessed by outside users.
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Indicate whether the statement is true or false
A patient with known arteriosclerosis was outside doing lawn work when he started experiencing chest pain. Upon your arrival, the patient states that he has been resting and took a prescribed nitroglycerin tablet 5 minutes ago. The patient states that the pain is subsiding. You suspect:
A) unstable angina. B) stable angina. C) Prinzmetal's angina. D) myocardial infarction.
The paper moves through an ECG machine at a rate of ____ mm per second
A) 5 B) 10 C) 15 D) 25
Answer the following statement(s) true (T) or false (F)
1. B cells and T cells are two types of antigens involved in humoral immunity. 2. Five elements, including a reservoir host, make up cell-mediated immunity. 3. Direct transmission occurs when the pathogen moves immediately from one host to another and may happen through contact with the infected person or with the discharges of the infected person. 4. A living organism that carries microorganisms from an infected person to another person is known as a vector. The most common carriers are insects such as fleas, flies, mosquitoes, and ticks. 5. Just as the pathogen needs a means of exit from the reservoir host, it also needs a means of entrance into the new host. It can enter a new host through any cavity lined with mucous membrane. 6. Immunity is the condition in which pathogens are absent or controlled.