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BIO 220 Final Exam 2
Question | Answer |
---|---|
Types of arteries | Elastic/Conducting (aorta), Muscular/Distributing (deliver blood to body organs), Arterioles (serve at tissue level) |
Know the conditions which can be expected with polycythemia | Enlarged spleen, blood clots, blood doping |
Explain why the erythrocyte count increases after a while when an individual goes from a low to a high altitude | At higher altitude, less oxygen so body makes more RBCs to maximize oxygen use |
Know correct development sequence of an RBC | Hemocytoblast-->Proerythroblast-->erythroblast-->Normoblast-->Reticulocyte-->Erythrocyte |
Natural anticoagulant found in basophils is______ | Heparin |
The immediate response to blood vessel injury is _______ | Vascular spasms |
Know the regulatory functions of blood | Normal pH, carrying hormones, temp regulation |
Know the protective functions of blood | Clot formation, prevents infections |
Blood volume restorers include | Ringer's solution, normal saline, electrolyte solution |
A lack of intrinsic factor, leading to a deficiency of vitamin B12 and large pale cells called macrocytes, is characteristic of ________anemia | Pernicious |
Leukocytes are different from RBCs in that they have ___________ | Nucleus |
Which organ in the body regulates erythrocyte production? | Kidneys |
The special type of hemoglobin present in fetal red blood cells is ________ | Fetal hemoglobin |
Normal range of hemoglobin _______ | 35-45 |
Name the normal plasma proteins | Albumin, Immunoglobulins (alpha, beta, gamma), fibrinoen |
Thromboembolic disorders are characterize by ________ | Embolus formation |
Know the location of followings: Epicardium, Myocardium, Endocardium | Epicardium (outermost layer), myocardium (middle layer), endocardium (innermost layer) |
Know the path of electricity through the heart | SA node --> AV node --> AV bundle --> Purkinje fibers |
Valve located between RV and Pulmonary trunk, prevents backflow | Pulmonary valves |
Valve located between RV and aorta, prevents backflow | Aortic valve (semilunar) |
Located between LA and LV, prevents backflow | Mitral (bicuspid) valve |
Located between RA and RV, prevents backflow | Tricuspid valve |
Normal heart sounds are caused by _________ | Closing of heart valves |
The semilunar valves are ______ when ventricles are in diastole. | Closed |
Explain why the left ventricular wall of the heart is thicker than the right wall | Left side of heart pushes blood farther distance through body |
Damage to the ________ is referred to as heart block | AV node |
The P wave of a normal electrocardiogram indicates _______ | Atrial depolarization |
The _____ carry blood to capillaries in the myocardium | Coronary arteries |
Length of the absolute refractory period in cardiac muscle cells is longer than the same skeletal muscle cells to _______ | Prevents titanic contractions (could stop the heart) |
What happens to the heart rate if the vagal nerves to the heart were cut? | HR increases by 25 bpm |
Which blood vessels receive blood during ventricular systole? | Pulmonary trunk and aorta |
Isovolumetric contraction refers to the short period of time during which ventricles are ________ | Closed |
Arterial pressure in the pulmonary circulation is _____ than in the systemic circulation | Lower |
The three main factors influencing blood pressure are | Cardiac output, peripheral resistance, blood volume |
The chemicals which help regulate blood pressure are | ADH and ANP |
Which tunic of an artery contains endothelium? | Tunica intima |
Permitting the exchange of nutrients and gases between the blood and tissue cells is the primary function of ________ | Capillaries |
The circulatory route that runs from the digestive tract to the liver is called | Hepatic portal circulation |
The arteries that are also called distributing arteries are the _______ | Muscular arteries |
This process provides a long-term response to changes in blood pressure | Renal regulation |
Which tunic of an artery is most responsible for maintaining blood pressure and continuous blood circulation? | Tunica media |
The arteries that directly feed into the capillary beds are called _______ | Arterioles |
Modified capillaries of liver that are lined with phagocytes are called ________ | Sinusoids |
Factors that aid venous return include | Activities of skeletal muscles, pressure changes in thorax, venous valves |
A thrombus in the first branch of the arch of the aorta would affect the flow of blood to the ________ | Right side of head and neck, upper right arm |
The baroreceptors in the carotid sinus and aortic arch are sensitive to_______ | Changes in arterial pressure |
Receives lymph from most of body | Thoracic duct |
Cleaning organ of blood | Spleen |
AKA interstitial fluid | Lymph |
Filter lymph fluid | Lymph nodes |
Patches in small intestine, provide immune function | Peyer's Patches |
The function of type II pneumocytes is to _______ | Produce and secrete surfactant |
The patency of the trachea is due to _______ | Cartilage rings |
Intrapulmonary pressure is the _______ | Pressure within the lungs |
The relationship between the pressure and volume of gases is given by _____law | Boyle's |
The pressure of a gas mixture is the sum of the partial pressures of the individual components of the gas mixture | Dalton's Law |
Surfactant helps to prevent the alveoli from collapsing by ________ | Reducing surface tension |