Mastering A&P2 Chapter 20 Flashcards

Questions and Answers

Which of the following correctly describes the pathway of lymph?

Lymphatic ducts to lymphatic vessels to lymphatic trunks

Lymphatic vessels to lymphatic capillaries to lymphatic ducts

Lymphatic trunks to lymphatic capillaries to lymphatic vessels

Lymphatic capillaries to lymphatic vessels to lymphatic trunks to lymphatic ducts (correct)

Lymph traveling from the left arm would enter the venous circulation via the _______.

thoracic duct

Which of the following is NOT a part of the lymphatic system?

Lymphatic vessels

Thymus

Erythrocytes (correct)

Lymph nodes

Lymph vessels do NOT transport ________.

erythrocytes Signup and view all the answers

When the lymphatic structures of a limb are blocked due to tumors, the result is ________.

severe localized edema distal to the blockage of that limb Signup and view all the answers

Select the correct statement about lymph transport.

Lymph transport depends on the movement of adjacent tissues, such as skeletal muscles. Signup and view all the answers

Lymphatic capillaries are present in ________.

digestive organs Signup and view all the answers

Which of the following is NOT a method that maintains lymph flow?

Capillary smooth muscle contraction Signup and view all the answers

Which of the following is NOT a function of the lymphatic system?

Transporting respiratory gases Signup and view all the answers

From the right leg, lymph moves in which order?

right lumbar trunk, thoracic duct, left subclavian vein Signup and view all the answers

Lymphatic ________ are formed from the union of the largest collecting lymphatic vessels.

trunks Signup and view all the answers

Fats absorbed from the small intestine are transported to the bloodstream via ________.

lacteals Signup and view all the answers

Which of the following would NOT be classified as a lymphoid organ?

Pancreas Signup and view all the answers

The lymphatic capillaries are ________.

more permeable than blood capillaries Signup and view all the answers

Select the correct statement about lymphocytes.

B cells produce plasma cells, which secrete antibodies into the blood. Signup and view all the answers

Select the correct statement about lymphoid tissue.

Lymphoid tissue is predominantly reticular connective tissue. Signup and view all the answers

Which of the following is considered a primary lymphoid organ?

Thymus Signup and view all the answers

Although B and T lymphocytes originate in the bone marrow, T cells mature in the ________.

thymus Signup and view all the answers

Small secondary lymphoid organs, which cluster along lymphatic vessels, are termed ________.

lymph nodes Signup and view all the answers

Lymph leaves a lymph node via ________.

efferent lymphatic vessels Signup and view all the answers

What is a bubo?

an infected lymph node Signup and view all the answers

Large clusters of lymph nodes are NOT found in the ________ region.

Popliteal Signup and view all the answers

Flow of lymph through a lymph node is slowed due to ________.

fewer efferent vessels draining it compared to many afferent vessels feeding it Signup and view all the answers

Antibodies that act against a particular foreign substance are released by ________.

plasma cells Signup and view all the answers

Functions of the spleen include all of those below EXCEPT ________.

Forming crypts that trap bacteria Signup and view all the answers

Which of the following is NOT a function of the spleen?

Producing new erythrocytes in adults Signup and view all the answers

Which of the following statements is FALSE regarding the spleen?

Red pulp is where immune functions take place. Signup and view all the answers

Lymphoid tissue that appears as a swelling of the mucosa in the oral cavity is called a(n) ________.

tonsil Signup and view all the answers

Which of the following structures is NOT considered mucosa-associated lymphoid tissue (MALT)?

Thymus Signup and view all the answers

Peyer's patches are found in the distal portion of the ________.

small intestine Signup and view all the answers

Mucosa-associated lymphoid tissues include all of the following EXCEPT ________.

Islets of Langerhans Signup and view all the answers

The tonsils located at the base of the tongue are the ________.

lingual tonsils Signup and view all the answers

Tonsils have blind-ended structures called ________ that trap bacteria and particulate matter.

tonsillar crypts Signup and view all the answers

Which of the following statements regarding the thymus is FALSE?

It has follicles similar to those in the spleen. Signup and view all the answers

The thymus is most active during ________.

childhood Signup and view all the answers

The thymus is the only lymphoid organ that does NOT ________.

produce B cells Signup and view all the answers

Study Notes

Lymphatic Pathway

Lymph moves from lymphatic capillaries to lymphatic vessels, then to lymphatic trunks, and finally to lymphatic ducts.
Lymph from the left arm enters venous circulation via the thoracic duct.

Components of the Lymphatic System

Erythrocytes are not a part of the lymphatic system.
Lymph vessels do not transport erythrocytes or respiratory gases.

Lymphatic Obstruction

Blockage of lymphatic structures in a limb due to tumors results in severe localized edema distally.

Lymph Transport Mechanisms

Lymph transport relies on the movement of adjacent tissues, such as skeletal muscles.
Capillary smooth muscle contraction is NOT a method maintaining lymph flow.

Lymphatic Capillaries and Organs

Lymphatic capillaries are more permeable than blood capillaries and are present in digestive organs.
Lymphoid organs include the thymus but exclude the pancreas and the spleen regarding specific functions.

Lymphocyte Function

B cells, upon activation, produce plasma cells that secrete antibodies into the bloodstream.
T cells mature in the thymus after originating in the bone marrow.

Lymph Nodes

Small secondary lymphoid organs along lymphatic vessels are known as lymph nodes; they filter lymph.
Lymph leaves a lymph node via efferent lymphatic vessels.
The flow of lymph through lymph nodes is slowed by having fewer efferent vessels compared to afferent vessels.
A bubo refers to an infected lymph node.

Spleen Functions

The spleen does not produce new erythrocytes in adults or form crypts to trap bacteria.
Red pulp is primarily associated with blood filtration, not immune functions.

Mucosa-Associated Lymphoid Tissue (MALT)

Peyer's patches are found in the distal small intestine.
Tonsils, including lingual tonsils, exhibit tonsillar crypts that trap bacteria.
Thymus is not classified as MALT.

Thymus Characteristics

The thymus is inactive post-childhood and does not contain follicles similar to those in the spleen.

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Test your knowledge on the lymphatic system with these flashcards focusing on key concepts from Chapter 20 of Anatomy & Physiology 2. Assess your understanding of lymph pathways, components, and functions to enhance your learning experience in A&P. Perfect for students preparing for exams or quizzes!