Lesson 11.1 Crossword


1.second largest vein in the body that returns deoxygenated blood to the right atrium of the heart from the upper half of the body
6.the period of relaxation in the heart when the chambers are filling with blood
7.the middle layer of the heart, which makes up about 2/3 of the heart muscle
8.the outermost layer of the heart and the innermost layer of the pericardial sac
9.largest vein in the human body that returns deoxygenated blood to the right atrium of the heart from body regions below the diaphragm
12.one of the small muscular bundles attached at one end to the chordae tendineae and at the other to the innermost or endocardial wall of the ventricles; maintains tension on the chordae tendineae as the ventricle contracts
13.the valve that closes the orifice between the left atrium and left ventricle of the heart; bicuspid valve
14.thick wall that divides the two ventricles in the heart


2.the innermost layer of the heart, which lines the interior of the heart chambers and covers the valves of the heart
3.the semilunar valve between the left ventricle and the aorta that prevents blood from flowing back into the left ventricle
4.the amount of blood pumped from the heart per minute
5.widening of the blood vessels, which increases blood flow
10.a large arterial trunk that arises from the base of the left ventricle and channels blood from the heart into other arteries throughout the body
11.a period of contraction when the chambers are pumping blood out of the heart

G-W Learning