A person is found to have a problem clearing mucus from the lungs. What information in the person's health history could explain this problem with mucociliary clearance?
A. Smoking
B. Low sodium diet
C. Sedentary lifestyle
D. High level of exercise
Answer: A
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Freezing of exposed tissues produces the condition of ____________________
Fill in the blank(s) with correct word
Which of the following is not true of the cytoskeleton?
A. It refers to the cellular components of bone. B. It refers to a network of cytoplasmic filaments. C. It is important for cellular movement. D. It helps to determine a cell's shape. E. It includes actin filaments.
The trochlea of the humerus articulates with the ________.
A. radius B. ulna C. scapula D. clavicle
Which of the following does not happen during ventricular systole?
A. The conduction system carries the electrical impulses from the AV node to the Purkinje fibers, the ventricles depolarize and contract together. B. Contraction of the ventricles decreases the volume and increases the pressure inside the ventricles. C. Papillary muscles contract, pulling on the tendinous chords to ensure that the AV valves stay closed and do not swing open towards the atria. D. All of these happen during ventricular systole.