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This question has two pictures for comparison: one without highlights (left) and one with the lumen of a chamber highlighted (right). Identify the specific highlighted chamber. Don’t forget to include right or left.

Identify the specific vessel indicated by the white arrow. The vessel is shown at a distance, close up without highlighting, and close up with highlighting.

Identify the specific blood vessel indicated by the black arrow on this posterior view of the sheep heart.

Be sure to include right or left. Identify the vessel at the tip of the arrow.

Identify the part of the vessel at the tip of the arrow.

This question has two pictures for comparison: one without highlights (left) and one with a valve highlighted (right). Identify the specific valve.

Which type of fiber of the extracellular matrix is thinner, branched and delicate; it is predominant in loose connective tissue and provides the framework of some organs such as the liver, spleen, lymph nodes and bone marrow? 

Where is the THINNEST skin found on a dog?

An atom that has 13 protons, 13 neutrons, and 10 electrons is called what?

Which of the following is the best definition of a holocrine gland?