The ________ is composed of circularly arranged layers of smooth muscle cells.
A. tunica externa
B. tunica media
C. tunica intima
D. tunica interna
E. None of the answers is correct.
Answer: B
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Identify the structure located within the mediastinum
A) pericardial cavity B) small intestine C) lung D) spleen E) stomach
Which of the following lists the steps to wound healing in the correct order?
A. Bleeding and clotting of the wound, wound contracture, granulation tissue fills in the wound's clot, a cut into the dermis B. A cut into the dermis, bleeding and clotting of the wound, granulation tissue fills in the wound's clot, wound contracture C. A cut into the dermis, bleeding and clotting of the wound, wound contracture, granulation tissue fills in the wound's clot D. Wound contracture, a cut into the dermis, bleeding and clotting of the wound, granulation tissue fills in the wound's clot
In the process of digestion, most nutrient absorption takes place in the
A) small intestine. B) stomach. C) large intestine. D) duodenum. E) liver.
The respiratory defense system is important for all of the following reasons except
A) helping filter the air. B) helping warm the air. C) keeping out debris. D) keeping out pathogens. E) providing gas exchange.