NU 110 EXAM QUESTIONS ANSWERED CORRECTLY LATEST UPDATE 2026

NU 110 EXAM QUESTIONS ANSWERED CORRECTLY LATEST UPDATE 2026 Veins - Answers bring blood back to the heart from the body Capallaries - Answers tiny blood vessel where substances are exchanged between the blood and the blood cells and also the blood and the air in the lung tissues Arteries - Answers carry blood away from the heart and back to the body Venules - Answers receive blood from the capallaries and start it on its way back to the heart Aorta - Answers receives freshly oxygenated blood from the left ventricle and then branches into the systemic arteries to carry blood to the tissues pulmonary artery - Answers carries blood low in oxygen from the right ventricle to the lungs Superior and Inferior Vena Cava - Answers The systemic veins that carry blood low in oxygen back toward the heart and flow into the right atrium The pulmonary veins carry what type of blood? - Answers oxygenated What is the longest section of the aorta? - Answers abdominal aorta What part of the aorta extends upward slightly to the right of the left ventricle? - Answers ascending aorta What part of the aorta curves from the right to the left and extends posteriorly? - Answers thoracic aorta What part of the aorta curves from the right to the left and extends also? - Answers Aorta arch What three arteries supply the upper extremities? - Answers brachiephalic right subclavian left subclavian What artieries supply the neck? - Answers right and left common carotid What arteries supply the intestines? - Answers superior and inferior mesenteric arteries What artery supplies the lower extremities? - Answers femoral artery and its branches What is the process of the cellular materials passing through the capillary walls to either be used or eliminated? - Answers Capillary exchange What pressure is defined as the maximum pressure that is present in the arteries after heart muscle contraction? - Answers Systolic What pressure is defined as the lowest pressure measured in the arteries after relaxation of the heart? - Answers Diastolic What is the average pressure of the arteries? - Answers mean arterial pressure (MAP) Mean Arterial Pressure (MAP) can be no lower than? - Answers 60 What is the difference between systolic and diastolic pressures? - Answers pulse pressure What are the negative feedback loop sensors for blood pressure? - Answers baroreceptors In the case of a high blood pressure, the high pressure increases baroreceptor signals and the control center send signals by way of the __________ that then slows the heart rate and dilates the peripheral vessels to ___________ the blood pressure. - Answers parasympathetic decrease If the blood pressure is low, the baroreceptors signal the control center and then the __________ is activated to ________the cardiac output by increasing the ________ and the ____________. - Answers sympathetic increase heart rate stroke volume The long-term regulation of blood pressure involves the control of the body's what? - Answers fluid balance What is the sac that encloses the heart? - Answers pericardium What is the thin, smooth layer of the epithelial cells that line the interior of the heart? - Answers endocardium The heart muscle is what? - Answers myocardium What is the outermost and heaviest layer of the pericardium? - Answers fibrous pericardium What is the chamber of the heart with the thickest wall and pumps blood to all parts of the body? - Answers left ventricle What part of the heart receives the oxygenated blood as it returns from the lungs? - Answers left atrium What part of the heart receives blood returning from the body? - Answers Right Atrium What part of the heart receives blood and pumps it to the lungs? - Answers Right ventricle The heart's valves provide__________ flow of the blood. - Answers one way What is located between the left atrium and the left ventricle? - Answers mitral valve What is the located between the right ventricle and the right atrium? - Answers tricuspid What is located between the left ventricle and the aorta? - Answers aortic valve What is located between the right ventricle and the pulmonary artery? - Answers pulmonary valve The myocardium has its own blood vessels and this system is known as? - Answers coronary circulation The blood send ________ blood to the lungs to be _________. - Answers deoxygenated oxygenated The process of forcing the blood from the atria to the ventricles is called? - Answers atrial systole The process of forcing the blood from the ventricles either to the lungs or the the body is called. - Answers Ventricular systole The heart is stimulated to contract by a wave of __________ that passes through the myocardial cells. - Answers electrical energy The _________ is located in the right atrium and initiates the heartbeat. - Answers SA node (sinoatrial node) The impulse of electricity is sent to the __________ also known as the __________. - Answers arterialventricular node Bundle of HIS From the Bundle of HIS fibers are located in both sides of the intraventricular septum, these are called right and left _____________. - Answers Bundle branches From the Bundle branches the electrical signal is then seperated into the ____________________ and this stimulates the contraction of the ventricles. - Answers Purkinje fibers A safety measure consists of allowing another region of the ___________ system to generate the heartbeat, but it will be slower. - Answers conduction What is the volume of blood that each ventricle pumps in one minute? - Answers cardiac output What is the heart rate less than 60 BPM? - Answers Bradycardia What is the volume of blood ejected from the ventricle with each beat? - Answers stroke volume Cardiac output= - Answers heart rate x stroke volume What increases the heart rate? - Answers sympathetic nerve fibers What decreases or lowers the heart rate? - Answers parasympathetic stimulation The parasympathetic nerve that supplies the heart is the ________ and it slows the heart rate by acting on the ________ and _________ nodes. - Answers vagus SA AV The sympathetic fibers also increase the __________and thus the ____________. - Answers contraction force stroke volume The first heart sound or ________, which is known as _________, is the sound that occurs at the start of ventricular systole. - Answers S1 lub The second heart sound, or _________, which is know as ________, is the sound that occurs at the beginning of ventricular relaxation and is caused by the closure of the semilunar valves. - Answers S2 Dub Breathing through the nose instead of the mouth allows the nasal mucosa to ______and _______ the air. - Answers warm moisten The respiratory system is a series of spaces and passageways that conduct air into and through the ________. - Answers Lungs The larynx connects the ______ with the _______. - Answers pharynx