Chapter 21 Review Questions

thyroid

The following are examples of Lymphatic structures except:

Right lymphatic duct

Lymph trunks are major lymphatic ducts that empty into the thoracic duct and:

returning interstitial fluid and leaked plasma proteins back to blood

The lymphatic system plays an important role in:

afferent; efferent

Lymph moves from a/an ______________ vessel through a lymph node and back out into the torso through a/an ________________ vessel. 

subclavian veins

The two lymphatic ducts empty into the:

spleen

The lymphatic organ responsible for aged and defective red blood cells from the bloodstream is/are:

True

True or false: The germinal center of lymph nodules produces lymphocytes

True

True or false: The lymphoid tissue located in the pharynx that protects against inhaled or ingested pathogens and foreign substances are called the tonsils. 

moves in a one-way system, ensuring lymph flows only toward heart

The fluid that passes through the lymphatic vessels

lacteals

The specialized lymph capillaries present in intestinal mucosa that absorb digested fat and deliver fatty lymph (chyle) to the blood are

4

Large groups of lymph nodes are found in the:

1. axillary region

2. cervical region

3. inguinal region (groin region)

4. all of the above

5. none of the above

fewer efferent vessels drain it compared to the many afferent vessels flowing into it

Which of the following slow down the flow of lymph in a lymph node?

the large numbers of lymphocytes and macrophages blocking flow

fewer efferent vessels drain it compared to the many afferent vessels flowing into it

the viscous nature of lymph

mini-valves regulating flow through the node

right arm

The thoracic duct collects lymph from all of the following except the

immunity and fluid balance

The lymphatic system's two main functions are to assist in

upper limbs, breasts, and superficial thorax

Subclavian trunks drain lymph from the

Right lumbar trunk - cisterna chyli - thoracic duct - left subclavian vein

Which would be the route taken by lymph traveling from lymphatic vessels in the right leg to the bloodstream?

tissue spaces between cells

Lymphatic capillaries originate in the

lack a basement membrane

Lymphatic capillaries…

lacteal

A lymphatic capillary that picks up dietary lipids in the small intestine is called a(n)

white blood cells that are generated in red bone marrow

B-lymphocytes are…

to the red bone marrow and thymus

The term "primary lymphoid structure" applies

secondary

Although they are not a site of lymphocyte formation, _________blank lymphoid structures provide sites where immune responses are initiated.

medulla

Which part of a thymic lobule contains mature lymphocytes and lacks a blood-thymus barrier?

at puberty

The thymus is at its maximum size

2; in the mediastinum

The thymus contains _________ lobes and is located _________.

Mucosa-associated lymphoid tissue

With respect to the lymphatic system, what do the letters in the acronym MALT stand for?

It serves as a blood reservoir.

Which is not correct regarding the white pulp of the spleen?

lymphoid nodule

Another name for a lymphoid follicle is a

None of the above

Which is not correct regarding lymph nodes?

lymphocytes are proliferating in germinal centers

The term "swollen glands" is usually meant to refer to lymph nodes in which

small intestine

Regions of MALT called aggregated lymphoid nodules (Peyer patches) are found in the

spleen

Which lymphoid organ contains red pulp and white pulp?

Palatoglossal tonsils

Which are not tonsils?

intracellular fluid

What is not a component of lymph?

lymphatic capillary → afferent lymphatic vessel → lymph node → efferent lymphatic vessel → lymphatic trunk → collecting duct → subclavian vein

What are the correct steps in the lymphatic pathway?

thymus

Match the lymphoid organ with its description

site of T-lymphocyte maturation

spleen

Match the lymphoid organ with its description

filters blood; storage of platelets and erythrocytes

lymph node

Match the lymphoid organ with its description

filters lymph

False

True or False: Lymphoid nodules are encapsulated lymphoid organs.

Thymus

Which lymphatic system organ involutes and becomes nonfunctional as aging occurs?

Production of red blood cells

Which of the following is not a function of the lymph node?

T-lymphocytes

Classify the descriptions into the appropriate categories regarding the two major types of lymphocytes.
Formed in red bone marrow, but then migrate as thymocytes to the thymus to mature

B-lymphocytes

Classify the descriptions into the appropriate categories regarding the two major types of lymphocytes.
Complete their maturation in red bone marrow

T-lymphocyte

The thymus functions in ______ maturation.

2

The thymus consists of ____ lobe(s)

immature

The cortex contains _______ lymphocytes protected by the blood-thymus barrier.

mature

The inner medulla contains _______ lymphocytes.