HISTO FINALS LYMPHOID SYSTEM

This lymphoid organ is the site of lymph fluid filtration.

• Spleen

• Tonsils

• Lymph nodes

• Thymus gland

The following statements are true of the inflammatory response, EXCEPT:

• It is innate, immediate, and usually localized.

• Cardinal signs include tumor, rubor, calor, dolor, and function laesa.

• It is antigen specific.

• The involved cells are neutrophils and macrophages.

Aside from the bone marrow, this tissue also produces lymphocytes and is considered a primary lymphoid organ. Which statement below is not true of this lymphoid organ?

• The capsule consists of dense irregular connective tissue.

• In the cortex of its lobules is where self-antigen presentation to the differentiating lymphocytes happens.

• T-lymphoccytes maturation is its primary function.

• During adulthood this organ involutes and most of its lymphoid tissue is replaced by adipose tissue

Primary lymphoid organs: (Select 2)

• Bone Marrow

• Thymus

• Lymph nodes

• Spleen

Secondary lymphoid organs: (Select 2)

• Bone Marrow

• Thymus

• Lymph nodes

• Spleen

The site for B cell maturation.

• Thymus

• Bone Marrow

• Lymph nodes

• Spleen

Thymus is a flat bilobed organ situated below the heart and above the thyroid gland.

• TRUE

• FALSE

Answer explanation

Thymus is a flat, bilobed organ situated ABOVE the heart and BELOW the thyroid gland.

Thymus becomes bigger with age.

• TRUE

• FALSE

Answer explanation

Thymus increases in size until it reaches its peak development during adolescence and becomes SMALLER with age.

This is where the T-cell matures.

• Bone Marrow

• Thymus

• Lymph nodes

• Spleen

Pre-T cells from the bone marrow migrate to the medulla of thymus to undergo maturation.

• TRUE

• FALSE

Answer explanation

Pre-T cells from the bone marrow migrate to the CORTEX of thymus to undergo maturation.