Module 2 Chapter 10 Blood (2.4-2.7)

Question 1

What are leukocytes? Function?

Answer 1

white blood cells

• Function as the mobile units of immune defence system in the body

Question 2

There are five different types of circulating leukocytes, which vary in structure, function, and number. These five types can be divided into three types of ______\________\_ and two types of _____\________\_.

Answer 2

There are five different types of circulating leukocytes, which vary in structure, function, and number. These five types can be divided into three types of polymorphonuclear granulocytes and two types of mononuclear agranulocytes.

Question 3

What are polymorphonuclear granulocytes characterized by and what are the three types?

Answer 3

Characterized by numerous nuclei of various shapes and by the presence of intracellular granules.

1. neutrophils,
2. eosinophils, and
3. basophils

Question 4

What are the mononuclear agranulocytes characterized by and what are the two types?

Answer 4

The mononuclear agranulocytes are characterized by a single nucleus and the absence of intracellular granules.

1. monocytes and
2. lymphocytes.

Question 5

Where do leukocytes originate from?

Answer 5

Leukocytes originate from the same population of pluripotent stem cells in the red bone marrow that produce erythrocytes.