A) AV node detects lower levels of oxygen and sends faster signals to the SA node.
B) brain consciously detects the need for more oxygen and intentionally stimulates the heart.
C) medulla oblongata,through the autonomic system,stimulates or depresses heart rate based on activity and stress.
D) hormone epinephrine inhibits the heartbeat.
E) SA node detects lower levels of oxygen and sends faster signals to the AV node.
Correct Answer
verified
Multiple Choice
A) right atrium.
B) left atrium.
C) right ventricle.
D) left ventricle.
E) pulmonary trunk.
Correct Answer
verified
Multiple Choice
A) Both are attached to arterioles.
B) Both are attached to venules.
C) Both contain three layers in their walls.
D) Both contain valves.
E) Both allow nutrient exchange across their walls.
Correct Answer
verified
Essay
Correct Answer
verified
View Answer
Multiple Choice
A) heme
B) globin
C) iron in the heme
D) iron in the globin
E) the polypeptide
Correct Answer
verified
Multiple Choice
A) fibrinogen.
B) glucose.
C) urea.
D) oxygen.
E) glycogen.
Correct Answer
verified
Multiple Choice
A) pulmonary vein.
B) inferior vena cava.
C) superior vena cava.
D) coronary vessels.
E) hepatic portal vein.
Correct Answer
verified
True/False
Correct Answer
verified
True/False
Correct Answer
verified
Multiple Choice
A) Tissue fluid exits from white blood cells.
B) Tissue fluid exits the capillary at the venous end.
C) Tissue fluid is collected by the lymphatic capillaries.
D) Tissue fluid contains more protein than blood.
E) Tissue fluid forms at the venous end of a capillary.
Correct Answer
verified
Multiple Choice
A) thrombus; cerebral embolism
B) embolus; cerebral embolism
C) thrombus; pulmonary embolism
D) embolus; pulmonary embolism
E) thrombus; stroke
Correct Answer
verified
True/False
Correct Answer
verified
Multiple Choice
A) left atrium.
B) right atrium.
C) aorta.
D) pulmonary vein.
E) pulmonary artery.
Correct Answer
verified
Multiple Choice
A) must attach to and never release oxygen
B) must release oxygen to any other medium despite concentration gradient
C) would bind to iron molecules already bound to other artificial blood units
D) must provide the clotting reaction
E) would bind to oxygen in a high oxygen concentration solution and release oxygen when in a low oxygen concentration solution
Correct Answer
verified
Multiple Choice
A) right atrioventricular valve aortic semilunar valve left atrioventricular valve pulmonary semilunar valve
B) right atrioventricular valve pulmonary semilunar valve left atrioventricular valve aortic semilunar valve
C) left atrioventricular valve pulmonary semilunar valve right atrioventricular valve aortic semilunar valve
D) pulmonary semilunar valve left atrioventricular valve aortic semilunar valve right atrioventricular valve
E) left atrioventricular valve aortic semilunar valve right atrioventricular valve pulmonary semilunar valve
Correct Answer
verified
Multiple Choice
A) calcium.
B) phosphorus.
C) chlorine.
D) iron.
E) sodium.
Correct Answer
verified
Multiple Choice
A) the hepatic portal vein to a hepatic portal artery.
B) the hepatic and renal systems (they would have to be switched) .
C) the pulmonary artery and vein (they would have to be switched) .
D) the coronary artery and vein (they would have to be switched) .
E) the aorta and vena cava.
Correct Answer
verified
True/False
Correct Answer
verified
Multiple Choice
A) coronary vessels that serve the heart.
B) pulmonary system that serves the lungs and where all factors are reversed.
C) hepatic portal system which runs from the capillary bed in the intestine to the capillary bed in the liver via a hepatic portal vein.
D) brain circulation which requires special continuous blood flow.
E) large bones that lack capillaries but are fed by an artery/vein system.
Correct Answer
verified
Multiple Choice
A) atrioventricular valve is not closing properly
B) semilunar valve is not closing properly
C) high blood pressure in the atria
D) ventricles are not contracting properly
E) low blood pressure in the ventricles
Correct Answer
verified
Showing 61 - 80 of 87
Related Exams