Chapter 20

Write an explanation with each answer

Courtney, a dental hygiene student, was in Ghana with several ofher classmates. Each summer, the students had an opportunity tocombine study abroad with volunteering at a dental clinic in Accra.On their second day at the clinic, Courtney met Juba, a localfarmer’s daughter. Juba’s right foot and leg below the knee wereextremely swollen, seemingly blown up like a balloon. In contrast,Juba’s left leg had a swelling at all and appeared quite normal.One of the local dentists told Courtney that Juba hadelephantiasis, a type of lymphedema caused by a blockage.

1. With Juba’s condition, what vessels are blocked? A. ArteriesB. Capillaries C. Veins D. Lymphatic vessels

2. Which of the following is NOT a function of the lymphaticsystem? A. Removing excess fluid from the blood B. Absorbing lipidsfrom the small intestines C. Returning fluid from the interstitialareas back to the blood stream D. Filtering lymph to remove foreignorganisms and particulates.

3. What helps circulate the lymph (fluid) through the lymphvessels? A. Ventricular contraction B. Skeletal muscle contractionsC. Exhalation D. Lymphatic vessel contraction

4. Before Juba’s leg became affected by this disorder, the lymphwould have passed first through which nodes? A. Cervical B.Axillary C. Inguinal D. Mediastinal