17. The Blood

More than one choice may apply.

Which of the following formed elements are phagocytic?

a. Erythrocytes

b. Neutrophils

c. Monocytes

d. Lymphocytes

What four characteristics of WBCs are important to their response to tissue invasion or injury?

Which kinds of WBCs contribute to the body's nonspecific defenses?

Besides the ability to move by amoeboid motion, what other physiological attributes contribute to the function of white blood cells in the body?

Name the three types of lymphocytes and identify their functions.

If you had a severe infection, would you expect your WBC count to be closest to 5000, 10,000, or 15,000/μl?

What is this condition called?

How do red blood cells differ from white blood cells in both form and function?

How do elements of blood defend against toxins and pathogens in the body?

In the disease mononucleosis ('mono'), the spleen enlarges because of increased numbers of phagocytes and other cells. Common signs and symptoms of this disease include pale complexion, a tired feeling, and a lack of energy sometimes to the point of not being able to get out of bed. What might cause these signs and symptoms?

Match the following leukocytes with the correct definition. 

__Basophil      

__B lymphocyte      

__Neutrophil      

__Monocyte       

__T lymphocyte      

__Eosinophil 

a. Destroys bacteria; directly phagocytoses bacteria

b. Responds to parasitic worm infection and mediates the allergic response

c. Activates all parts of the immune response; directly kills cancer or virally infected cells

d. Secretes inflammatory mediators

e. Agranulocyte that matures into macrophage

f. Agranulocyte that secretes antibodies

Lymphocytes are derived from the _____ cell line, whereas the other leukocytes are derived from the _____ cell line.

A blood sample from your patient shows that she has decreased numbers of neutrophils. Predict the effects of this condition. How would it differ if numbers of T lymphocytes were decreased instead?

Lymphocytes continuously circulate through the body using blood and lymph as their transport vehicles. What is the importance of this recirculation behavior?