Which of the following is NOT an area that contains lymph nodes?
A) abdominal cavity
B) cranial cavity
C) thoracic cavity
D) axillary region
Answer: B) cranial cavity
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All of the following occur during exercise except
A) vasodilation occurs at the active skeletal muscles. B) venous return increases. C) both cardiac output and stroke volume increase. D) tissue perfusion to the digestive system decreases. E) angiotensin II is released.
The hematocrit is the percentage of the volume of a blood sample made up of
A. plasma. B. white blood cells. C. red blood cells. D. platelets.
Select the correct statement about immunodeficiency.
A) Severe combined immunodeficiency (SCID) disease is an acquired condition. B) The causative agent in acquired immune deficiency syndrome (AIDS) is a virus that recognizes CD4 proteins. C) Hodgkin's disease is a hereditary immunodeficiency found in children. D) The most common form of immunodeficiency is graft-versus-host (GVH) disease.
The fossa ovalis appears just above the opening of the coronary sinus within the
A. left atrium. B. left ventricle. C. right atrium. D. right ventricle.