The esophagus
A. has thin walls of connective tissue.
B. produces two enzymes that digest proteins.
C. has upper and lower sphincters to regulate movement of food.
D. has cartilage in its walls to keep it from collapsing.
E. extends from the fauces to the stomach.
Answer: C
You might also like to view...
If an individual carries two different alleles for the same trait, the individual is ________ for the trait
A) homologous B) homozygous C) heterozygous D) autosomous E) polygenic
The afferent division of the nervous system is also known as the _____ division
A. motor B. cranial C. ganglial D. efferent E. sensory
The area of a myofibril where there are no actin filaments is the
A) H band. B) M line. C) I band. D) Z line. E) A band
Which fluid does lymph most closely resemble?
A. Whole blood B. Blood plasma C. Interstitial fluid D. Intracellular fluid