In the United States, what is the most uncommon ABO blood type?

Name the two atrioventricular (AV) valves.

Name the white blood cell pictured below.

What are these mound-like structures to which fibrous cords attach (indicated by the arrow)?

Your patient has Type B+ blood.  Name the type of ABO and Rh antigen(s) present on the surface of your patient’s erythrocytes.

Contraction of the ventricles is specifically referred to as __________.

Identify this bone (indicated by the arrow).

What is the category of membrane that surrounds the heart?

Identify this endocrine gland (indicated by the arrows).

An infant with a VP shunt for hydrocephalus presents with vomiting, high-pitched cry, bulging fontanel, and setting-sun eyes. The parent states the child has also been “sleepier than usual” over the past day. What is the priority nursing interpretation?