Individual skeletal muscle cells are packed with cylindrical contractile elements about 1 mm in diameter called ____
a. muscle fibers
b. sarcomeres
c. tendons
d. ligaments
e. myofibrils
ANSWER: e
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Which cells secrete mucus?
A) type II alveolar cells B) ciliated cells C) alveolar macrophages D) type I alveolar cells E) goblet cells
Compared to the arteries, speed of blood flow in the capillaries is __________.
a. faster b. slower c. the same
The portion of the immunoglobulin molecule that contains the antigen binding site can be described as all of the following except the
A. Fab fragment B. Fc fragment C. variable region D. light chain E. portion responsible for cross-linking