The __________ muscle aids in the movement of food in the mouth while chewing.
A) auricularis
B) buccinator
C) levator labii superioris
D) orbicularis oris
E) risorius
Ans: B) buccinator
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Blood assists in defending the body against toxins and pathogens by
A) increasing the swelling of injured tissues. B) warming the tissues immediately surrounding injury sites. C) decreasing the pH of injured or infected tissues. D) transporting white blood cells to injury or infection sites. E) All of the answers are correct.
Identify the true statement regarding gas concentrations in the pulmonary system.
A. The oxygen concentration of inspired air is higher than that of alveolar air. B. Blood in the pulmonary veins is high in carbon dioxide. C. Blood in the pulmonary veins is low in oxygen. D. All of the choices are correct.
This figure shows a palmar view of the hand. What muscle does number 1 indicate?
A. Abductor pollicis brevis B. Flexor digiti minimi brevis C. Lumbrical D. Opponens pollicis E. Adductor pollicis
The spinous process extends posteriorly from the union of the
A. transverse processes. B. laminae. C. pedicles. D. superior and inferior articulating processes.