_____ – proteins that can cause a rise in body temperature

Which lymphatic organ’s major job is to destroy worn-out red blood cells and return some of the products to the liver:

What gas is moving in this direction? (2 X’s)  

Immunoglobulins that are single molecules and are mainly responsible for resistance against viruses, bacteria, and bacterial toxins are

The bronchioles are the smallest of the conducting passageways in the lungs.

The process by which dissolved gases are exchanged between the blood and interstitial fluid is

The nasal cavity is separated from the oral cavity by:

Injured cells release chemicals such as histamine and kinins that dilate vessels, attract phagocytes and activate pain receptors.

Antigen presentation is essential for the activation of clonal selection of T cells.

Expiration occurs when the thoracic and intrapulmonary volumes decrease and the intrapulmonary pressure increases.