Thymus, lobules and spleen

Question 1

Describe the thymus

Answer 1

Soft bi-lobed organ

Shrinks in size during lifetime

Question 2

Where is the thymus located

Answer 2

behind the sternum anterior to aorta

Question 3

What is the thymus replaced with in elderly?

Answer 3

Adipose and connective tissue

Question 4

What is the thymus surrounded by and what does it extend into?

Answer 4

Connective tissue capsule that extends inwards and divides into lobules

Question 5

What do lobules contain?

Answer 5

Lymphocytes-some mature T cells or T lymphocytes-leave thymus to provide immunity

Question 6

What does the thymus secrete?

Answer 6

Hormones called thymuses- influence maturation of T lymphocytes

Question 7

Where is the spleen located?

Answer 7

Upper left abdominal cavity

Question 8

What is the spleen composed of?

Answer 8

White pulp-contains many lymphocytes

Red pulp-contains RBC, macrophages and lymphocytes

Question 9

What does the spleen do?

Answer 9

Filter blood and removes damaged blood cells and bacteria