Three structural types of capillaries are continuous, fenestrated, and ____________.

Which of the following does NOT assist in returning the blood to the heart through the veins?

What is meant by the “pulmonary circulation”? The flow of blood:

When a presence of one hormone enables another hormone to act, we call it

Which of the following does NOT assist in returning the blood to the heart through the veins?

Repetitive contraction and relaxation of heart chambers are called ________ and _______.

What is meant by the “pulmonary circulation”? The flow of blood:

Three structural types of capillaries are continuous, fenestrated, and ____________.

From the right ventricle, blood flows directly into the _____.

When a presence of one hormone enables another hormone to act, we call it