When the mitral valve closes, it prevents the backflow of blood from the
a. left atrium into the left ventricle.
b. left ventricle into the left atrium.
c. right atrium into the right ventricle.
d. left ventricle into the aorta.
e. right ventricle into the pulmonary trunk.
Answer: b. left ventricle into the left atrium.
You might also like to view...
A sign that could be an indication of diabetes is breath that smells like ________.
A. fruit-flavored chewing gum B. clay or starchy paste C. sweat D. maple
Bone is considered part of the skeletal system, but ligaments are not.
Answer the following statement true (T) or false (F)
The bones of the wrist are called tarsals
a. True b. False Indicate whether the statement is true or false
Most people retain adequate kidney function in old age. Why?
A. Decreased activity in old age leads to a decrease in production of toxins. B. Glomeruli grow new blood vessels through life. C. Nephrons use blood more efficiently. D. Older people drink less fluid and therefore have less need to produce urine. E. A loss of nephrons does not radically impair function because there are so many to begin with.