Lymphatic System

Small organs associated with lymphatic vessels are termed:

cisterna chyli.
axillary nodes.
lymph follicles.
lymph nodes.

D) lymph nodes

Which of the following would not be classified as a lymphatic structure?

spleen
tonsils
pancreas
Peyer’s patches of the intestine

C) pancreas

The distal portion of the small intestine contains clumps of lymph follicles called:

rugae.
villi.
Peyer’s patches.
islets of Langerhans.

C) Peyer’s patches

Both lymph and venous blood flow are heavily dependent on:

contraction of the vessels themselves.
two-way valves.
the pumping action of the heart.
skeletal muscle contractions and differences in thoracic pressures due to respiratory movement.

D) skeletal muscle contractions and differences in thoracic pressures due to respiratory movement.

The thymus is most active during:

childhood.
middle age.
old age.
fetal development.

A) childhood

Which lymphatic structure drains lymph from the right upper limb and the right side of the head and thorax?

lumbar trunk
cisterna chyli
right lymphatic duct
thoracic duct

C) right lymphatic duct

What effect does age have on the size of the thymus?

The size of the thymus decreases continuously from birth to death.
The thymus is not affected by age.
The size of the thymus increases continuously from birth to death.
The thymus initially increases in size and then decreases in size from adolescence through old age.

D) The thymus initially increases in size and then decreases in size from adolescence through old age

The lymphatic capillaries are:

equally permeable to blood capillaries.
completely impermeable.
less permeable than blood capillaries.
more permeable than blood capillaries.

D) more permeable than blood capillaries

Antibodies that act against a particular foreign substance are released by:

plasma cells.
lymph nodes.
medullary cords.
T lymphocytes.

A) plasma cells

Lymph leaves a lymph node via:

efferent lymphatic vessels.
the subscapular sinus.
the cortical sinus.
afferent lymphatic vessels.

A) efferent lymphatic vessels

By secreting hormones, the thymus causes what cells to become immunocompetent?
:
basophils
lymphocytes
monocytes
macrophages

B) lymphocytes

Functions of the spleen include all of those below except:

storage of iron.
crypts that trap bacteria.
storage of blood platelets.
removal of old or defective blood cells from the blood.

B) crypts that trap bacteria

When the lymphatics are blocked due to tumors, the result is:

increased pressure in the lymphatics proximal to the blockage.
severe localized edema distal to the blockage.
shrinkage of tissues distal to the blockage due to inadequate delivery of lymph.
abnormally high lymph drainage from the distal region.

B) severe localized edema distal to the blockage

Select the correct statement about lymph transport.

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

A) lymph transport depends on the movement of adjacent tissues, such as skeletal muscles

Select the correct statement about lymphocytes.

T cells are the precursors of B cells.
The two main types are T cells and macrophages.
T cells are the only form of lymphocyte found in lymphoid tissue.
B cells produce plasma cells, which secrete antibodies into the blood.

D) B cells produce plasma cells, which secrete antibodies into the blood

Select the correct statement about lymphoid tissue.

Lymphoid macrophages secrete antibodies into the blood.
Lymphoid tissue is predominantly reticular connective tissue.
Once a lymphocyte enters the lymphoid tissue, it resides there permanently.
T lymphocytes act by ingesting foreign substances.

B) lymphoid tissue is predominantly reticular connective tissue

A ring of lymphoid tissue that appears as a swelling of the mucosa in the oral cavity is called a(n):

tonsil.
appendix.
Peyer’s patch.
thymus.

A) tonsil

Which is not a mucosa-associated lymphatic tissue?

tonsil
appendix
Peyer’s patch
thymus

D) thymus

Peyer’s patches are found in the:

small intestine.
spleen.
stomach.
large intestine.

A) small intestine

Lymph collecting or pooling from the lower extremities would first pool in the ________ before moving on up.

cisterna chyli
inguinal nodes
azygos
thoracic duct

A) cisterna chyli

What is a bubo?

an infected Peyer’s patch
a lobe of the spleen
a wall in a lymph node
an infected lymph node

D) an infected lymph node

What is the function of a Hassall’s corpuscle?

It has no known significant function.
It increases the surface area of the thymic cortex.
It forms the blood-thymus barrier.
It assists in the production of lymphocytes.

A) it has no known significant function

Particularly large clusters of lymph nodes occur in all of the following locations except the:

inguinal region.
cervical region.
lower extremities.
axillary region.

C) lower extremities

Digestive tract-associated lymphatic tissue includes all of the following except:

lingual tonsils.
palatine tonsils.
islets of Langerhans.
Peyer’s patches.

C) islets of Langerhans

Functions of the lymphatic system include:

transport of red blood cells to the blood vascular system.
transport of excess tissue fluid to the blood vascular system.
maintenance of blood pressure in the venous circulation.
excretion of excess dietary fat.

B) transport of excess tissue fluid to the blood vascular system

The tonsils located at the base of the tongue are the:

palatine tonsils.
lingual tonsils.
Peyer’s tonsils.
pharyngeal tonsils.

B) lingual tonsils

Which of the following is not a normal component of lymph?

ions
red blood cells
water
plasma proteins

B) red blood cells

A sentinel node is:

the first node at the junction of all the lumbar trunks.
the first node to receive lymph from an area suspected to be cancerous.
a lymph node found in the intestinal lamina propria.
a small node in the spleen.

B) the first node to receive lymph from an area suspected to be cancerous.