Which of the following statements about the liver is FALSE?
a. the liver is supplied with both hepatic arteries and veins
b. the inferior mesenteric, splenic, and superior mesenteric veins deliver venous blood to the liver
c. the presence of continuous capillaries in the liver allows new plasma proteins made in the hepatocytes to enter the capillaries
d. all of the listed responses are true; none is false
Ans: c. the presence of continuous capillaries in the liver allows new plasma proteins made in the hepatocytes to enter the capillaries
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Which is the correct path of an electrical excitation from the pacemaker to a cardiocyte in the left ventricle (LV)?
A) Sinoatrial (SA) node ? atrioventricular (AV) node ? Purkinje fibers ? atrioventricular (AV) bundle ? cardiocyte in LV B) Sinoatrial (SA) node ? atrioventricular (AV) node ? atrioventricular (AV) bundle ? Purkinje fibers ? cardiocyte in LV C) Atrioventricular (AV) node ? Purkinje fibers ? atrioventricular (AV) bundle ? sinoatrial (SA) node ? cardiocyte in LV D) Sinoatrial (SA) node ? atrioventricular (AV) bundle ? atrioventricular (AV) node ? Purkinje fibers ? cardiocyte in LV E) Atrioventricular (AV) node ? sinoatrial (SA) node ? atrioventricular (AV) bundle ? Purkinje fibers ? cardiocyte in LV
Four secretory organs that open lateroventrally near the carapace edge of turtles are the ___________________
Fill in the blank(s) with correct word
Systole refers to
A. contraction. B. stimulation. C. relaxation.
Compare negative and positive feedback and explain why negative feedback is important in homeostasis
What will be an ideal response?