Which layer functions by secreting a lubricating fluid?
a) Serosa
b) Submucosa
c) Muscularis
d) Mucosa
e) MALT
a
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The C shape of the tracheal cartilages is important because
A) large masses of food can move through the esophagus. B) large masses of air can pass through the trachea and thus the bronchi. C) it facilitates turning of the head. D) the bronchi are also C-shaped. E) it permits the trachea to pinch shut prior to sneezing.
Which gender shows the coccyx pointed inferiorly?
a) Females b) Males c) Both genders d) The coccyx does not point inferiorly in either gender
The portion of the hair below the surface of the skin is the
A. medulla. B. shaft. C. cuticle. D. root. E. hair bulb.
What is the major difference between lymph and tissue fluid (interstitial fluid)?
A. Tissue fluid contains more white blood cells than lymph. B. Lymph is found only in lymphatic organs like lymph nodes; tissue fluid is found in the lymphatic vessels. C. Lymph contains plasma proteins; tissue fluid does not. D. Their location: lymph is in lymphatic vessels, tissue fluid is in the tissues, between tissue cells.