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Thymus - lecture

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Questions and Answers

Where is the thymus located?

In the abdomen

In the chest (correct)

In the head

In the legs

At what age does the thymus begin to deteriorate?

After birth

After puberty (correct)

After age 50

After age 60

What is the weight of the thymus in a person over 50 years old?

40 grams

30 grams

20 grams

Less than 15 grams (correct)

How many thymic lobes is the thymus divided into?

Two Signup and view all the answers

What is the function of the reticular epithelial cells in the cortex of the thymus?

To maintain blood-thymus barrier Signup and view all the answers

What is the function of thymic hormones?

To stimulate stem cell divisions and T cell differentiation Signup and view all the answers

What is the structure of each thymic lobule?

Dense outer cortex and pale central medulla Signup and view all the answers

What type of lymphocytes divide in the cortex of the thymus?

T lymphocytes Signup and view all the answers

Where do mature T cells leave the thymus from?

Medulla Signup and view all the answers

What is the weight of the thymus in newborn infants and young children?

30-40 grams Signup and view all the answers

What is the function of T lymphocytes?

To destroy infected cells Signup and view all the answers

What is the function of cytokines?

To regulate immune responses Signup and view all the answers

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