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week 10

Heart and Blood

QuestionAnswer
The bulk of the heart wall is the thick, contractile middle layer called the Myocardium.
Which of the following is not a formed element found in the blood? plasma
From which vessels do myocardial cells receive blood? coronary arteries
Mechanical devices that permit the flow of blood in one direction only are called Valves.
Blood from the brachiocephalic vein drains into the head, neck, and upper extremity.
Platelets play an important role in blood clotting.
Neutrophils are highly mobile and phagocytic. They migrate out of blood vessels and into tissue spaces. This process is called diapedesis.
Atria are often called _____ because they receive blood from vessels called veins. receiving chambers
_____ is used to determine the volume percentage of red blood cells in whole blood. Hematocrit
During pregnancy, what happens to the oxygenated blood returned from the placenta via the umbilical vein? It flows into the inferior vena cava.
Which layer of the larger blood vessels is made up of endothelium? tunica intima
All of the following are granulocytes except lymphocytes.
Renal veins drain blood from the Kidneys.
The normal ECG is composed of all of the following except a E wave.
The type of membranous tissue that lines the heart and blood vessels is the endothelium.
The _____ is(are) supplied with blood from the left subclavian artery. head and upper extremities
The term blood type refers to the type of blood cell antigen.
The _____ drains much of the superficial leg and foot. great saphenous vein
The heart valves that are located where the trunk of the pulmonary artery joins the right ventricle and where the aorta joins the left ventricle are called semilunar valves.
During fetal circulation, what opening in the septum, between the right and left atria, directs most of the blood so that it bypasses the fetal lungs? foramen ovale
The normal cardiac impulse that initiates mechanical contraction of the heart arises in the SA node.
Blood flow from the heart through blood vessels to all parts of the body and back to the heart is referred to as _____ circulation. systemic
A graphic record of the heart’s electrical activity is a(n) ECG.
Which sphincters function as regulatory valves that reduce the flow of blood through a network of capillaries when they contract and constrict the arterioles? precapillary sphincters
Erythrocytes begin their maturation sequence in red bone marrow from nucleated cells known as: hematopoietic stem cells.
The internal iliac artery supplies blood to the pelvis.
Microscopic vessels that carry blood from small arteries to small veins are capillaries.
A glycoprotein hormone that is secreted to increase oxygen concentration in the tissues is Erythropoietin.
The four structures that compose the conduction system of the heart are the SA node, AV node, AV bundle, and Purkinje fibers.
The heart has its own special covering, a loose-fitting inextensible sac called the pericardium.
Created by: Sandoval.Sam
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