When the radius of the airway was decreased, _______.
A. expiratory reserve volume decreased
B. residual volume decreased and expiratory reserve volume decreased
C. vital capacity increased
D. tidal volume increased
E. residual volume decreased
Answer: A. expiratory reserve volume decreased
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Answer the following statements true (T) or false (F)
1. The terms integument, skin, and cutaneous membrane refer to the same structure. 2. Serous membranes are made up of columnar epithelial tissue attached to a basement membrane. 3. Pleurisy and peritonitis are both inflammations of a serous membrane. 4. Mucus membranes are all made of squamous epithelial tissue attached to a basement membrane. 5. The eyelid is an example of a mucocutaneous junction.
A gene can best be defined as ________
A) a segment of DNA that carries the instructions for one polypeptide chain B) a three-base triplet that specifies a particular amino acid C) noncoding segments of DNA up to 100,000 nucleotides long D) an RNA messenger that codes for a particular polypeptide
Waves of muscular contractions that propel the contents of the digestive tract are called
A) segmentation. B) pendular movements. C) peristalsis. D) churning movements. E) mastication.
Smooth muscle fibers in arteries and veins are found in the:
tunica media tunica interna endothelial lining tunica externa none of the choices are correct