Discuss why the C-shaped rings of cartilage in the submucosa of the trachea are appropriate to their function
What will be an ideal response?
The C-shaped rings of cartilage are rigid enough to provide support to the trachea and keep it open (patent). These rings are also flexible enough to provide for changes in diameter of the trachea. Since the rings do not enclose the posterior surface of the trachea, the esophagus is capable of expanding into the posterior trachea during swallowing.
You might also like to view...
One example of a multiaxial joint is the __________ joint.
A. proximal radioulnar B. metatarsophalangeal C. humeroulnar D. humeroscapular E. atlantoaxial
Factors in preventing (or delaying) osteoporosis include ________.
A) drinking fluoridated water B) decreasing weight-bearing exercise C) increasing dietary vitamin C D) decreasing exposure to the sun
Which statement does not apply to macrophages?
a. They participate in inflammation. b. They process and present antigens to lymphocytes. c. They secrete antibodies. d. They secrete interleukin 1. e. They participate in immune surveillance against cancer.
Amino acids and glucose are both absorbed by secondary active transport by the small intestinal epithelial cells
Indicate whether the statement is true or false