Which of the following is not characteristic of lymphatic vessels?
They have thin walls
They can contract to propel lymph
They transport lymph to the tissues
They are blind-ended
The Correct Answer is C
A. They have thin walls – Lymphatic vessels have thin walls, similar to veins, which allow for the passage of lymph.
B. They can contract to propel lymph – Lymphatic vessels do have the ability to contract, aided by smooth muscle and valves, which helps propel lymph in the right direction.
C. They transport lymph to the tissues – This statement is incorrect. Lymphatic vessels carry lymph away from the tissues (not to the tissues) and toward lymph nodes and eventually to the bloodstream.
D. They are blind-ended – Lymphatic capillaries are indeed blind-ended, meaning they begin as closed-ended tubes that absorb interstitial fluid from tissues.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. Inguinal nodes are located in the groin area, not the neck.
B. Subclavian nodes are found near the clavicle (collarbone), closer to the chest, not specifically in the neck.
C. Cervical nodes are the correct answer. These lymph nodes are located in the neck and are responsible for filtering lymph from the head and neck region.
D. Palatine tonsil is located in the oropharynx (back of the throat), not in the neck, although it is part of the lymphatic system.
Correct Answer is ["A","D"]
Explanation
A. Transfer through the placenta or breast milk is a form of naturally acquired passive immunity, where antibodies are passed from mother to child without the child's immune system having to produce them.
B. Inflammation is part of the innate immune response and not related to passive immunity.
C. Vaccination with an antigen involves stimulating the body to produce its own immune response, which is active immunity, not passive.
D. Administration of antiserum provides artificially acquired passive immunity, where pre-formed antibodies are given to an individual for immediate protection.
E. Tears and saliva are part of the innate immune system (first line of defense) and are not considered forms of passive immunity.
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