The lymphatic ducts conduct lymph into what? A. Heart B. Aorta C. Superior and inferior vena cavas D. Right and left subclavian veins

Which duct returns lymph from the right arm and right side of the head and neck into the right subclavian vein? A. Right subclavian duct B. Left lymphatic duct C. Thoracic duct D. Right lymphatic duct

Where does the lymphatic system empty into the cardiovascular system?Multiple Choicethe tonsils and thymusaxillary lymph nodes and the spleeninguinal and axillary lymph nodesthe thymus and spleenthe thoracic and right lymphatic duct

In what way are lymphatic vessels unlike veins in the cardiovascular system?Multiple Choiceone-way systemcontain valvestake up excess tissue fluiddependent upon skeletal muscle contractiontransport fluid

16. The thoracic duct in the thorax is located:Between azygos vein and esophagusBetween aorta and azygos veinBetween esophagus and pericardiumNear the mediastinal pleura17. The central organs of immune system:TonsilsLymph nodesBone marrowSpleen18. The lymph capillaries are absent:Spinal cordHeartDermisMuscles19. The goiter is enlargement of:Pituitary glandThyroid glandThymusAdrenal gland20. The Waldeyers lymphatic ring forms by:TonsilsLymph nodesAppendixPayer’s patches21. The thymus is located in:Middle mediastinumSuperior part of neckBehind pericardiumAnterior mediastinum22. Which lymphatic trunks enter into right venous angle?Right and left lumbarSubclavian and jugularAnterior and posterior mediastinalSubclavian and thoracic23. The thyroid gland forms by:Head and bodyLobes and isthmusCortex and medullaReticular tissue24. When the organs of immune system begins to develop:6th week of embryogenesis4th week of embryogenesis24th week of embryogenesis10th week of embryogenesis25. The hormones produceby:Small intestineLiverKidneyEndocrine gland

The left ventricle pushes blood into what vessel(s)?Multiple ChoiceVenae cavaePulmonary trunkAortaPulmonary veins