Pulsations from which artery can be felt at the lower border of the mandible just anterior to the masseter muscle?
A. Superficial temporal
B. Transverse facial
C. External carotid
D. Facial
Answer: D. Facial
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The first bone you identify is long and rather large. It has a rounded head, an elongated neck, and smooth condyles on its distal surface. There also are large bony projections near the neck of this bone. Based on these features, you determine that the bone in question is a
a. humerus. b. radius. c. femur. d. tibia.
Which of the following types of regulation involves binding to the active site?
A) Competitive inhibition B) Allosteric regulation C) Covalent modification D) Both B and C
The lining of the gastrointestinal tract that allows for absorption and secretion is
A. simple columnar epithelium. B. areolar connective tissue. C. keratinized stratified squamous epithelium. D. simple squamous epithelium. E. nonkeratinized stratified squamous epithelium.
Microorganisms removed from incoming air by the mucus of the respiratory tract are ultimately exposed to and destroyed by
A) toxins in the mucus. B) the cilia. C) stomach acids and enzymes. D) a lack of nutrients. E) alveolar macrophages.