Which statement is TRUE?
A. The lateral swellings form the anterior 2/3 of the tongue, with the sensory innervation from CN V (GVA) and VII (SVA; taste).
B. The posterior 1/3 of the tongue (arches 2-4) innervated by CN VIII (sensory; both somatic and taste) and X (SVA and GVA).
C. Pharyngeal Arch I forms the copula.
D. Pharyngeal Arches II-IV form the tuberculum impar.
E. Pharyngeal Arches III and IV form the two lateral and one medial swelling.
Answer: A. The lateral swellings form the anterior 2/3 of the tongue, with the sensory innervation from CN V (GVA) and VII (SVA; taste).
You might also like to view...
When you are jogging, your muscles are using more oxygen and releasing more carbon dioxide into the blood than when you are at home on the couch. Which of the following would occur during your jog?
A) Blood pH would become more basic. B) The concentration of bicarbonate ions (HCO3-) in the blood would decrease. C) The medullary respiratory center would detect rising carbon dioxide levels. D) The volume of the dead air space would decrease.
Many songbirds breed in North America in the spring and summer and then migrate to Central and South America in the fall. They spend the winter in these warmer areas, where they feed and prepare for the spring migration north and another breeding season
Two hypothetical species of sparrow, A and B, overwinter together in mixed flocks in Costa Rica. In spring, species A goes to the east coast of North America, and species B goes to the west coast. What can you say about the isolating mechanisms of these two species? A) They must have strong postzygotic isolating mechanisms to spend winter in such close proximity. B) They must have strong prezygotic isolating mechanisms to spend winter in such close proximity. C) Their winter habitat has no bearing on their degree of reproductive isolation. D) Reinforcement must be occurring when they winter together.
Electron microscopes differ from light microscopes in that
A. electrons replace light. B. electromagnets replace glass lenses. C. resolution is higher. D. magnification is higher. E. All of the choices are correct.
The causative agent of cholera in humans is a member of the genus ________.
A. Vibrio B. Shigella C. Escherichia D. Enterobacter