Chapter 4 - The Lymphoid Organs

Question 1

1. Origin of thymus gland

Answer 1

THIRD AND FOURTH PHARYNGEAL POUCHES

Question 2

2. Part of the thymus containing matured T cells

Answer 2

MEDULLA

Question 3

3. Percentage of surviving lymphocytes eventually leaving the thymus

Answer 3

5-10%

Question 4

4. Type of lymphocytes with greater population at approximate in the spleen

Answer 4

B LYMPHOCYTES (50%)

Question 5

5. Passage that transports lymphocytes to the vena cava (carries blood to the right side of the heart)

Answer 5

THORACIC DUCT

Question 6

6. Upon antigenic stimulation, these structures in the cortical region of the lymph nodes form germinal centers

Answer 6

LYMPHOID FOLLICLES

Question 7

7. Region in the lymph nodes that contains T cells and macrophages

Answer 7

PARACORTICAL AND PERIFOLLICULAR REGION