Mature ________ are the most abundant of the formed elements.
A. platelets
B. erythrocytes
C. neutrophils
D. lymphocytes
Answer: B
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Max returns to his dorm room late at night to find his roommate throwing up. The smell is at first so bad that Max wants to vomit too, but after helping his roommate clean up, the odor seems to fade. Max has experienced
A. a hallucination. B. damage to his sensory receptors. C. sensory adaptation. D. a response to the decreasing concentration of odorant molecules in the room.
Which statement is incorrect?
a. Alveoli are the site of gas exchange in the lungs. b. Pores of Kohn allow air to flow between adjacent bronchioles. c. Alveolar Type II cells secrete pulmonary surfactant. d. Alveoli are very thin and are surrounded by a network of capillaries so that air and blood are separated by a very thin barrier. e. The alveoli are thin-walled, inflatable, grape-like sacs at the end of the bronchioles.
True or False? Sun exposure increases the production of keratin by skin cells, resulting in an orange hue to the skin.
Answer the following statement true (T) or false (F)
A tennis player complains of severe pain in the shoulder when serving or returning an overhead volley. Which of the rotator cuff muscles is probably damaged?
A. infraspinatus B. subscapularis C. supraspinatus D. teres major E. deltoid