Immune

Question 1

Where are Peyer’s patches found?

Answer 1

Ileum of small intestine

Question 2

2 ways differences between adult and infant thymus

Answer 2

Adult:

• more fatty
• fewer cells

Question 3

Why are there no germinal centres in thymus

Answer 3

T cell organ (germinal centres are for B cells)

Question 4

Process that causes changes seen from infant to adult thymus

Answer 4

Age involution

Question 5

Where are lymphoid nodules found in a lymph node? What cells do they contain?

Answer 5

In the cortex

B cells

Question 6

This region of the medulla within a thymus has high endothelial venules

Answer 6

Corticomedullary region

Question 7

Which organ and which part of it are Hassall’s corpuscles found

Answer 7

Medulla of thymus

Question 8

4 sinuses of a lymph node

Answer 8

• Subcapsular
• Cortical
• Trabecular
• Medullary

Question 9

Difference between trabeculae and septae?

Answer 9

Septae partially or completely surrounds a structure

Trabeculae merely inserts into the structure

Question 10

• Nucleus off on one side (eccentric)

- Clumps of chromatin around the circumference of nucleus

Answer 10

Plasmacyte

Question 11

________ divides the thymus into incomplete lobules

Answer 11

Septae

Question 12

Structural cells of a lymph node’s subcapsular sinus

Answer 12

Stellate cells

Question 13

3 layers of a lymph node

Answer 13

• Cortex
• Paracortex
• Medulla

Question 14

3 components of lymph node medulla

Answer 14

• medullary cords
• medullary sinuses
• trabeculae

Question 15

Epithelial cells within the thymus cortex form _____________

Answer 15

blood thymus barrier

Question 16

Where are germinal centres found?

Answer 16

Within secondary nodules