Lymphatic Test Bank

Functions of the lymphatic system include ________. A) transport of excess tissue fluid to the blood vascular system B) transport of red blood cells to the blood vascular system C) maintenance of blood pressure in the venous circulation D) excretion of excess dietary fat

A

Protein-containing fluid within lymphatic vessels

Lymph

Antibodies that act against a particular foreign substance are released by ________. A) T lymphocytes B) plasma cells C) lymph nodes D) medullary cords

B

Both lymph and venous blood flow are heavily dependent on ________. A) the pumping action of the heart B) skeletal muscle contractions and differences in thoracic pressures due to respiratory movement C) contraction of the vessels themselves D) two-way valves

B

By secreting hormones, the thymus causes what cells to become immunocompetent? A) basophils B) lymphocytes C) macrophages D) monocytes

B

Functions of the spleen include all of those below except ________. A) removal of old or defective blood cells from the blood B) crypts that trap bacteria C) storage of blood platelets D) storage of iron

B

Digestive tract-associated lymphatic tissue includes all of the following except ________. A) Peyer's patches B) palatine tonsils C) lingual tonsils D) islets of Langerhans

D

Highly specialized lymph capillaries called _____ are present in the villi of the intestinal mucosa.

lacteals

The thoracic duct of the lymphatic system empties in to the _______.

left subclavian vein

Small organs intimately associated with lymphatic vessels

lymph nodes

Hassall's corpuscles are always found in the lighter-colored ______ regions of the thymus.

medullary

Stores blood platelets

spleen

largest lymphatic organ

spleen

Receives lymph from most of the body

thoracic duct

Of the organs in the lymphatic system, only the _______ becomes less important as you get older.

thymus

The _____ are the simplest lymphoid organs and are found at the entrance to the pharynx.

tonsils

Lymphatic ______ are formed from the union of the largest collecting vessels.

trunks

The ______ pulp of the spleen forms cuffs around the central arteries.

white

T/F: Lymphatic capillaries are permeable to proteins.

True

Which is not a mucosa-associated lymphatic tissue? A) tonsil B) thymus C) Peyer's patch D) appendix

B

T/F: Lymphocytes reside temporarily in lymphoid tissue, then move to other parts of the body.

True

T/F: Lymphoid tissue is mainly reticular connective tissue.

True

A ring of lymphoid tissue that appears as a swelling of the mucosa in the oral cavity is called a(n) ________. A) tonsil B) thymus C) Peyer's patch D) appendix

A

Lymph leaves a lymph node via ________. A) efferent lymphatic vessels B) afferent lymphatic vessels C) the cortical sinus D) the subscapular sinus

A

The lymphatic capillaries are ________. A) more permeable than blood capillaries B) less permeable than blood capillaries C) equally permeable to blood capillaries D) completely impermeable

A

The tonsils located at the base of the tongue are the ________. A) lingual tonsils B) palatine tonsils C) pharyngeal tonsils D) Peyer's tonsils

A

Which of the following would not be classified as a lymphatic structure? A) pancreas B) spleen C) tonsils D) Peyer's patches of the intestine

A

Peyer's patches are found in the ________. A) stomach B) small intestine C) large intestine D) spleen

B

Select the correct statement about lymphocytes. A) The two main types are T cells and macrophages. B) B cells produce plasma cells, which secrete antibodies into the blood. C) T cells are the precursors of B cells. D) T cells are the only form of lymphocyte found in lymphoid tissue.

B

Small organs associated with lymphatic vessels are termed ________. A) lymph follicles B) lymph nodes C) axillary nodes D) cisterna chyli

B

The distal portion of the small intestine contains clumps of lymph follicles called ________. A) islets of Langerhans B) Peyer's patches C) rugae D) villi

B

The thymus is most active during ________. A) fetal development B) childhood C) middle age D) old age

B

When the lymphatics are blocked due to tumors, the result is ________. A) shrinkage of tissues distal to the blockage due to inadequate delivery of lymph B) severe localized edema distal to the blockage C) increased pressure in the lymphatics proximal to the blockage D) abnormally high lymph drainage from the distal region

B

Lymph collecting or pooling from the lower extremities would first pool in the ________ before moving on up. A) thoracic duct B) inguinal nodes C) cisterna chyli D) azygos

C

Select the correct statement about lymphoid tissue. A) Once a lymphocyte enters the lymphoid tissue, it resides there permanently. B) Lymphoid macrophages secrete antibodies into the blood. C) Lymphoid tissue is predominantly reticular connective tissue. D) T lymphocytes act by ingesting foreign substances.

C

Which lymphatic structure drains lymph from the right upper limb and the right side of the head and thorax? A) lumbar trunk B) thoracic duct C) right lymphatic duct D) cisterna chyli

C

Which of the following is not a normal component of lymph? A) water B) plasma proteins C) red blood cells D) ions

C

Particularly large clusters of lymph nodes occur in all of the following locations except the ________. A) inguinal region B) cervical region C) axillary region D) lower extremities

D

Select the correct statement about lymph transport. A) Under normal conditions, lymph vessels are very high-pressure conduits. B) Lymph transport is faster than that occurring in veins. C) Lymph transport is only necessary when illness causes tissue swelling. D) Lymph transport depends on the movement of adjacent tissues, such as skeletal muscles.

D

The thymus is the only lymphoid organ that does not: A) have lymphocytes B) produce hormones C) have a cortex and medulla D) directly fight antigens

D

What effect does age have on the size of the thymus? A) The size of the thymus increases continuously from birth to death. B) The size of the thymus decreases continuously from birth to death. C) The thymus is not affected by age. D) The thymus initially increases in size and then decreases in size from adolescence through old age.

D

What is a bubo? A) a wall in a lymph node B) a lobe of the spleen C) an infected Peyer's patch D) an infected lymph node

D

T/F: Lymph always flows away from the heart.

False

T/F: Peyer's patches are clusters of lymphoid tissue found primarily in the large intestine.

False

T/F: The cisterna chyli collects lymph from the lumbar trunks draining the upper limbs and from the intestinal trunk draining the digestive organs.

False

T/F: The largest lymphatic vessels are called lacteals.

False

T/F: The thymus lacks T cells.

False

The appendix, tonsils, and Peyer's patches are examples of _______.

MALT

Isolated clusters of lymph follicles found in the wall of the small intestine

Peyer's patches

Part of MALT

Peyer's patches

T/F The lymphatics function to absorb the excess protein-containing interstitial fluid and return it to the bloodstream.

True

T/F: About 3 liters of fluid are lost to the tissue spaces every 24 hours and are returned to the bloodstream as lymph.

True

T/F: An infected lymph gland is called a bubo.

True

T/F: Because lymph vessels are very low-pressure conduits, movements of adjacent tissues are important in propelling lymph through the lymphatics.

True

T/F: Chyle is delivered to the blood via the lymphatic system.

True

T/F: Digested fats are absorbed from the intestine by the lymph capillaries.

True

T/F: If even a small part of the spleen is left in a ten-year-old child, it will most likely regenerate itself.

True

Lymph nodes have more ______ lymphatic vessels than ________ lymphatic vessels.

afferent; efferent

Tonsils have blind-ended structures called _______.

crypts