White Blood Cells Flashcards Preview

Anatomy and Physiology > White Blood Cells > Flashcards

Flashcards in White Blood Cells Deck (19):
1

What shape are WBCs in circulation?

Spherical

2

When do WBCs become active?

Once they enter tissue

3

Which WBCs are granulocytes?

Eosinophils, basophils, neutrophils

4

Which WBCs are mononuclear (agranulocytic)?

Monocytes, lymphocytes

5

What is the most abundant WBC in the dog, cat, and horse?

Neutrophil

6

What is the most abundant WBC in the bovine, sheep, pig, and chicken?

Lymphocyte

7

Where do WBCs (Except lymphocytes) mature and what is needed for their maturation?

In the bone marrow, need cytokines

8

Where do lymphocytes mature?

In the lymphatic system, after they are generated in the bone marrow and transported to the lymphatic system

9

At which stage of granulopoiesis is a cell committed to a specific WBC?

Myelocyte

10

How long is a neutrophil in the bone marrow, the blood, and the target tissue?

6 days in bone marrow, 7-14 days in blood, 4 days in target tissue

11

What is the name given to the method of entry of neutrophils into the target tissue via squeezing between endothelial cells?

Diapedesis

12

Name three important features of neutrophils.

They are the first responders to invading organisms, they release chemoattractants for other WBCs, and they increase the permeability of vessel walls

13

How long is an eosinophil in the bone marrow, the blood, and the target tissue?

2-6 days in bone marrow, 1-24 hours in blood, 2-14 days in target tissue

14

Name three functions of eosinophils.

Phagocytose antigen-antibody complexes, deactivate histamines and prevent histamine/serotonin release, and fight parasitic infections (Such as helminths) by bursting on the parasite

15

What do basophils contain and what do the contents do?

Contain histamine, heparin, serotonin, and they cause vasodilation and anticoagulation

16

What is the largest WBC?

Monocyte

17

Where can monocytes be stored?

Bone marrow and spleen

18

What is the lifespan of a monocyte?

Days to weeks

19

Are lymphocytes limited to just one mechanism of action?

No, can have specific mechanisms of action such as antibody production or directly dealing with infection