Histology 2E

Create an illustration of human lymphatic and immune system diagrams, highlighting organs like the thymus, spleen, and lymph nodes in an educational style.

Histology 2E Quiz

Test your knowledge of the lymphatic and immune systems with our comprehensive Histology 2E quiz. This interactive quiz covers a wide range of topics, including the adaptive immune response, lymphatic organs, and antigen-presenting cells.

Engaging multiple-choice questions
Designed for students and professionals
Enhance your understanding of human biology

29 Questions7 MinutesCreated by LearningCell102

What is true regarding the adaptive immunity?

Its response is very rapid

Includes antigen presenting cells

Includes the action of B-lymphocytes

Is evolutionary older than acquired immunity

It could be because of the exsintence of IgA within saliva or tears

Is because of clonal expansion of B-cells

Is because of action of lysozymes

Which statement regarding the lymphatic system is true?

Penicillar arterioles are typical for the thymus

HEV's are present in lymph nodes

Spleen contains an outer cortex

Secondary lymphatic nodules have a germinal center

Appendix is the so-called tonsil of the digestive tract

Open blood circulation is specific for lymph nodes

Palatine tonsils are covered by pseudostratified epithelium

Which organ of the lymphatic system is unencapsulated?

Thymus

Solitary nodules

Palatine tonsil

Lymph node

Thymus:

Belongs to the central lymphoid organs

Its epithelial cells are antigen-presenting

Its stroma consists of epithelial cells

Blood-thymus barrier in the medulla

What is correct for the lymphatic system?

Open blood circulation is specific for the spleen

HEV's are present in lymph nodes

Lymphatic nodule of lymph node has a central arteriole

Lymphatic nodule of the spleen has a central arteriole

Penicillar arterioles are typical for the spleen

The spleen is the organ of red blood cell degradation

Secondary lymphatic nodules have a germinal center

Antigen-presenting cells:

They process antigens and show them to T-lymphocytes

They have MHC 1 and 2 on their surface

Includes dendritic cells of lymphatic nodules

Includes langerhans cells of skin; dermis

Are part of the mononuclear phagocyte system

Are MHC restricted cells

Are not restricted by MHC

Lymphatic system:

Lymphatic nodule of lymph node has a central arteriole

Open blood circulation is specific for the spleen

HEV's are present in the inner cortex of lymph nodes

Adaptive immunity:

Includes the action of B-lymphocytes

It could be because of the existence of IgA within saliva and tears

Is because of the phagocytic activity of neutrophils

Is because of the action of lysosomes

Includes antigen presenting cells

Is because of clonal expansion of B-lymphocytes

Lymph nodes:

Are distributed along the course of lymphatic vessels

T-lymphocytes are situated in the paracortex

Contains lymphatic sinuses

Becomes larger during inflammation

Germinal center is part of the inner cortex

Lymph vessels enter at the convex side

Has not got any T-helper cells

Plasma cells in medullary cords

What is correct regarding the lymphatic system?

Antibodies are produced by plasma cells

Th-lymphocytes belong to the CD4 positive cells

Closed blood circulation is possible for the spleen

Open blood circulation is specific for the spleen

The spleen:

Is the biggest lymphoid organ

Its stroma is formed by reticular connective tissue

Red pulp is composed of splenic cords and T&B-cells

There are no B-lymphocytes

PALS of white matter contains B-cells

White pulp contains B-lymphocytes, PALS and central artery

PALS of white matter is the thymus dependent zone

It is a central lymphoid organ

Lymphatic organs:

Includes the central and peripheral organs

The bone marrow is the central organ for B-lymphocytes

The germinal center of lymphoid nodules contains mainly B-lymphocytes

Matches: description of the lymphatic organ

Lymph node - cortex with lymphatic nodules

Thymus - reticular epithelial stroma

Spleen - thymus dependent zone is PALS

Lymph node - outer cortex is thymus dependent

Lymph node - inner cortex is thymus dependent

Lymph node - outer cortex is thymus independent

True regarding the lymphatic system:

IgA is a secretory immunoglobulin

APC include dendritic cells

Thymus is the central lymphatic organ for T-lymphocytes

Spleen is covered with simple squamous epithelium

White pulp of spleen is composed of lymphatic nodule

Immunoglobulins

There are five classes in humans; IgG, IgA, IgM, IgE and IgD

IgG is the most abundant in serum

Are manufactured by plasma cells

IgA is a secretory antibody

IgE, IgG and IgD are monomer

IgA is a dimer

IgM is a pentamer

Antigen-presenting cells: APCs

Thymus:

Is a lympho-epithelial organ

Does not have lymphatic nodules but incomplete lobules

Hassals corpuscles are located in its medulla

Hassals corpuscles:

Are found in the medulla of the thymus

Are formed by TECs

Are degenerated epithelial cells

Immune response:

T-lymphocytes are responsible for the cellular mediated immune response

B-lymphocytes are responsible for the humoral mediated immune response

Innate immunity is rapid from start

Adaptive immunity starts slow then rapid

The lymph node:

Is the place of B-cell proliferation

Possesses afferent and efferent lymphatic vessels

Outer cortex contains lymphatic nodule

Outer cortex contains PALS

Are avascular

Lymph vessel enter the concave depression

Lymph vessel enter the convex side

Its stroma is formed by reticular connective tissue

Germinal center is part of its outer cortex

What is true about the thymus?

Has not got any lymphatic nodules

Belongs to the central lymphoid organ

Is medulla contains thymocytes cortex

Filters lymph from antigens

Produces immunoglobulins

Undergo involution during postnatal life

Antigen presenting cells:

Have phagocytic ability

Macrophages are an example of these cells

They only have MHC2 on their surface, not MHC1

Includes dendritic cells of lymphatic nodules

Processes antigens and shows them to T-lymphocytes

Produces only IgA among the immunoglobulins

Are MHC restricted cells as T-lymphocytes

Spleen:

Red pulp is composed of splenic cords and sinusoids

White pulp includes lymphoid nodule, central artery and PALS

Its capsule contains smooth muscle cells

Is divided into a medulla and cortex

Is a central lymphoid organ

Its stroma is formed by epithelial reticular cells

What is true for the lymphoid system?

HEV's are present in the inner cortex of lymph nodes

Secondary lymphatic nodules have a germinal center

The mantle of secondary lymphatic nodules contain mature B-lymphocytes

Tonsils does not have a thymus-dependent zone

Payers patches are situated in the duodenum

Payers patches are situated in the appendix

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Histology 2E

Histology 2E Quiz

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