What structure in the fetus allows blood to directly flow from the right atrium to the left atrium?
A) Ductus venosus
B) Ductus arteriosus
C) Foramen ovale
D) Foramen rotundum
Answer: C
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Answer the following statements true (T) or false (F)
1. Cardiac veins empty into the superior vena cava, which drains into the right atrium. 2. One function of arteries is to serve as blood reservoirs. 3. In the capillaries, glucose and carbon dioxide move in opposite directions. 4. A heart that is beating weakly will cause a drop in the central venous pressure. 5. Normal average diastolic pressure is about 120 mm Hg.
Fibrocartilage discs that divide the joint into two compartments are called
A) tendons. B) ligaments. C) bursae. D) menisci.
Thick skin can be found on the
A) back. B) palms. C) legs. D) arms. E) chest.
The epiglottis ________.
A. prevents food and liquid from entering the pharynx B. assists in the production of sound C. prevents food and liquid from entering the larynx D. prevents food and liquid from entering the nasal cavity