Blood
A hematocrit of 56% would be an indication of:
What is polycythemia
The structural components of the circulatory system include:
What are the heart and blood vessels
Which of the blood vessels act as blood reservoirs?
What are veins
Which artery in the arm is used for measuring blood pressure?
What is the brachial artery
Lymph capillaries called lacteals are located in the:
What is the small intestine
Erythropoietin is a hormone:
Released by the kidneys to stimulate RBC formation
The pulmonary arteries carry blood to the:
What are the lungs
A vein that returns blood from the head is:
What is the jugular vein
Which type of blood vessel has the largest cross-sectional area?
What are capillaries
Lymph ducts empty into the circulatory system, draining into the:
What are the subclavian veins
Which types of white blood cells are thought to play a role in the prevention of clotting?
What are basophils
Pericardial fluid can be found between the:
What are the epicardium and the pericardium
Which is a superficial vein of the lower arm?
What is the brachial vein
The pulse in the wrist is felt over which artery?
What is the radial artery
The percentage of the total proteins that leak out of the capillaries into the tissue fluid on a daily basis is:
What is 50%
Under the microscope, erythrocytes appear as:
What are biconcave discs without nuclei
AV valves prevent the backflow of blood into the:
What are the atria
Atherosclerosis is characterized by the deposition of lipids in the tunica:
What is intima
Vasomotor control mechanisms influence:
What is the diameter of arterioles
The thymus is located in the:
What is the mediastinum
What type of formed blood element can carry oxygen?
What are erythrocytes
The correct order of the layers of the heart from deep to superficial are:
What are the endocardium, myocardium, and epicardium
After birth the ductus venosus closes and:
Allows blood to flow to the liver
Peripheral resistance to blood flow comes about because of:
What is friction between the blood cells and the vessel walls
Peyer patches are isolated nodules of lymph tissue found in the:
What is the intestinal wall