Speculate about the benefit of having the nerve supply of the diaphragm, which is located in the thoracic-lumbar area of the spinal cord, arise from cervical nerves.
What will be an ideal response?
The fact that the phrenic nerve originates so high in the spinal cord reduces the likelihood of spinal damage above the phrenic origin, thereby reducing the possibility that a spinal injury would stop the diaphragm from working.
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A "widow's hump" or "dowager's hump" is an exaggerated thoracic curvature that is technically called ________.
Fill in the blank(s) with the appropriate word(s).
Which is the most common immunoglobulin for allergies?
A) IgA B) IgE C) IgD D) IgG
What prevents bacteria and materials in the large intestine from flowing backward into the ileum of the small intestine?
A) circular folds B) ileocecal valve C) gastroesophageal sphincter D) pyloric sphincter
At the start of gastrulation, a long, thin depression known as the primitive ________ forms on the surface of the epiblast.
A. node B. groove C. furrow D. yolk E. streak