Lymphocytes that attack foreign cells or body cells infected with viruses are ________ cells.

Hormonal actions on cells include those that affect

TSH plays a key role in the ________ of thyroid hormones.

Figure 18-1 Pituitary Hormones and Their TargetsUse Figure 18-1 to answer the following questions:Identify the hormone labeled “13.”

The following is a list of vessels and structures that are associated with the heart. What is the correct order for the flow of blood entering from the systemic circulation? 1. right atrium2. left atrium3. right ventricle4. left ventricle5. venae cavae6. aorta7. pulmonary trunk8. pulmonary veins

The lymphatic system is composed of all of the following, except

Figure 18-1 Pituitary Hormones and Their TargetsUse Figure 18-1 to answer the following questions:Identify the hormone labeled “13.”

The hormone related to appetite control is

Immunoglobulins that are primarily found in glandular secretions are

The “red pulp” of the spleen contains large numbers of