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Physiology Activity
Week 10
| Question | Answer |
|---|---|
| A glycoprotein hormone that is secreted to increase oxygen concentration in the tissues is | erythropoietin |
| A disease that develops as a result of the reaction of a mother’s Rh antibodies with her Rh-positive baby is | erythroblastosis fetalis. |
| All of the following are components critical to coagulation except | None; prothrombin, thrombin, fibrinogen, fibrin are all critical to coagulation. |
| In the extrinsic pathway of stage 1 of the clotting mechanism, chemicals released from damaged tissues trigger the cascade of events that ultimately result in the formation of | prothrombin activator |
| The physiological mechanism that dissolves clots is known as | fibrinolysis |
| The molecule that makes up 95% of the dry weight of each red blood cell and is responsible for the red pigment is | hemoglobin |
| Which of the following is not a formed element found in the blood? | plasma |
| The term blood type refers to the type of blood cell | antigen |
| The bulk of the heart wall is the thick, contractile middle layer called the | myocardium |
| The heart has its own special covering, a loose-fitting inextensible sac called the | pericardium |
| The normal ECG is composed of all of the following except a | E wave |
| A type of abnormal heart sound that may signify incomplete closing of the valves is | a heart murmur |
| A graphic record of the heart’s electrical activity is a(n) | ECG |
| From which vessels do myocardial cells receive blood? | coronary arteries |
| Atria are often called _____ because they receive blood from vessels called veins. | receiving chambers |
| 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 |
| The internal iliac artery supplies blood to the | pelvis |
| Which layer of the larger blood vessels is made up of endothelium? | tunica intima |
| During pregnancy, what happens to the oxygenated blood returned from the placenta via the umbilical vein? | It flows into the inferior vena cava. |
| Which types of arteries are also called conducting arteries and include the aorta? | elastic arteries |
| Renal veins drain blood from the | kidneys |
| 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 |
| The _____ drains much of the superficial leg and foot. | great saphenous vein |
| Factors that affect the strength of myocardial contraction are called | inotropic factors |
| Blood viscosity stems mainly from the red blood cells but also partly from the _____ in blood. | protein molecules present |
| The localized pressure gradient needed to maintain blood flow in a tissue is called | perfusion pressure |
| The term used to describe the collection of mechanisms that influence the circulation of blood is: | hemodynamics |
| What functions as an emergency mechanism when hypoxia or hypercapnia endangers the stability of the internal environment? | chemoreceptor reflex |
| _____ shock results from a condition in which infectious agents release toxins into the blood. | septic |
| The difference between systolic pressure and diastolic pressure is called | pulse pressure |
Created by:
Janelleu4771
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