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Exam 10: Lymphatic System

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Question 1

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The lymph nodes of the head are located in either a superficial or a deep position relative to the surrounding tissue. All nodes of the head drain either the right or left tissue, structures, or organs in each region.

A) Both statements are true.
B) Both statements are false.
C) The first statement is true; the second is false.
D) The first statement is false; the second is true.

E) B) and C)
F) None of the above

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Question 2

Multiple Choice

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Tonsils are masses of lymphoid tissue located in the oral cavity and pharynx. Like lymph nodes, tonsils are located along lymphatic vessels.

A) Both statements are true.
B) Both statements are false.
C) The first statement is true; the second is false.
D) The first statement is false; the second is true.

E) B) and C)
F) None of the above

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Question 3

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Unlike capillaries, lymphatic vessels have valves similar to many veins. These valves ensure a one-way flow of lymph through the lymphatic vessel.

The retroauricular, anterior auricular, and superficial parotid nodes drain the external ear, lacrimal gland, and adjacent regions of the scalp and face. All of these nodes empty into the submandibular lymph nodes.

The thoracic duct is MUCH smaller than the right lymphatic duct BECAUSE it drains the lymph from the entire lower half of the body (both the right and left sides) .

The occipital lymph nodes can be palpated during the extraoral examination by asking the patient to tilt his or her head to the left and then to the right with the chin upward BECAUSE the occipital lymph nodes empty into the inferior deep cervical nodes of the neck.

Which of the following lymph nodes can be effectively palpated during an extraoral examination by having the patient turn his or her head to the side?

From the following list of lymph nodes, select those that are categorized as facial lymph nodes.

Which of the following signs or symptoms listed below CANNOT be used to describe a lymph node involved in cancer?

Which of the following terms BEST describes the process in lymph nodes when a patient has a disease process active in a region, such as cancer or infection, by increasing in size and changing the consistency of the lymphoid tissue?

The lymphatics of the right side of the head and the neck converge by way of the right jugular trunk. These lymphatics then join the lymphatics from the right arm and thorax to form the thoracic duct.

The retroauricular lymph nodes are also known by which of the following terms?

From the following list of descriptions, select those for tonsillar tissue.

In healthy patients, lymph nodes are usually small, soft, and free or mobile in the surrounding tissue. Therefore lymph nodes normally can be easily visualized or palpable during an extraoral examination of a healthy patient.

Lymph from a particular tissue region drains into a secondary node, regional node, or master node. Secondary nodes, in turn, drain into a primary node or central node.

What is the term used to denote the spread of cancer from the original or primary site of the tumor to another secondary site?

The dental professional needs to remember that the lymph nodes NEVER drain other structures of the head and neck but only the teeth and associated structures. A patient may need a referral when lymph nodes are palpable due to a disease process.

From the following list of descriptions, select those for the jugulo-omohyoid lymph node.

The submandibular lymph nodes are located at the inferior border of the ramus of the mandible, just superficial to the submandibular salivary gland and within the submandibular fascial space. These nodes drain the cheeks, upper lip, body of the tongue, anterior hard palate, as well as the mandibular incisors and maxillary third molars.

A dental professional needs to check carefully for any palpable nodes of the head and neck during an extraoral examination BECAUSE the palpable lymph nodes may help determine where a disease process is active.