The left ventricular wall of the heart is thicker than the right wall in order to ________.   A accommodate a greater volume of blood   B expand the thoracic cage during diastole   C pump blood with greater pressure   D pump blood through a smaller valve

Q: A major difference between arteries and veins is thata. arteries always carry oxygenated blood;…

A: The circulatory system has blood vessels to carry blood from one place to another throughout the…

Q: The major baroreceptor(s) used to regulate blood pressure is/are located in… Group of answer…

A: Baroreceptors sense the change in blood pressure and transmit information to the brain so that…

Q: The part of the heart that relaxes when filling up with blood before ejection to the pulmonary…

A: Heart is the most important organ that pumps blood. It is divided into four compartments; right and…

Q: When is the blood pressure in the left ventricle greater than the blood pressure in the aorta?   A…

A: Cardiac cycle is a cycle through which atrial contraction ends with  ventricular relaxation. When…

Q: The pressure in the lung/gill capillaries and systemic capillaries are the same A) True of two…

A: Pulmonary circulation is the movement of blood from the heart to the lungs. It carries deoxygenated…

Q: The ascending aorta and pulmonary trunk develop from the embryonic:- a. bulbus cordis only. b.…

A: Ascending aorta refers to the part of the aorta that begins at the upper region of the left…

Q: For questions #10-20, match each term to its definition. _____ . Vein…

A: Heart is defined as the hollow muscular organ which is composed of several layers of cardiac muscles…

Q: The pulse pressure is a measure of a. the number of heartbeats per minute. b. the sum of the…

A: Blood pressure records two measurements: systolic pressure and diastolic pressure wherein systolic…

Q: Which of the following occurs during ventricular diastole? a-The ventricles contract to force blood…

A: During ventricular diastole, the following occur- b- The ventricles relax and refill with blood c-…

Q: During surgery, the right vagus nerve was accidently cut. Explain the effect on the heart rate. a.…

A: It has three components: blood, heart and the blood vessels. Heart is derived from the mesodermal…

Q: In a healthy young adult, what happens to cardiacoutput when heart rate increases above 160 bpm?a.…

A: Cardiac output is also known as heart output. It describes the amount of blood being pumped by the…

Q: Which of the following is NOT one of the functions of the cardiovascular system? a) To exchange…

A: The cardiovascular system or the circulatory system comprises the heart and the network of blood…

Q: In humans, blood returning to the heart from the lungs returns toa. the right ventricle. d. the left…

A: In humans, the route of blood through the pulmonary circuit is as follows: Right ventricle -->…

Q: To get from the right atrium to the right ventricle, blood flows througha. the pulmonary valve.b.…

A: To get from the right atrium to the right ventricle, blood flows through the right AV valve or…

Q: 1. Which phase of Ventricular Filling increases the volume of blood in the ventricles the most?…

A: The heart is a pump that transports blood through a network of arteries. Its function is to send…

Q: Which of the following channels are involved in the action potential in contractile cells of the…

A: An action potential is a sudden, fast, transitory, and propagating shift in the resting membrane…

Q: What does the circled structure do?

A: Heart Mesodermally derived organ, is situated in the thoracic cavity between the lungs, slightly…

Q: The function of structure X is to Select one: a. act as the pacemaker of the heart. b. initiate the…

A: Heart is located in the chest cavity and derived from mesodermal tissue. Heart is surrounded and…

Q: 1. What happens when the pressure in the ventricles becomes lower than the pressure in the atria?…

A: Semilunar valves are valves of the heart and the shape of valves prevents the blood to flow back…

Q: Hearts of mammals are described to have double pump structure. Which choice explains the functional…

A: There are four chambers in the heart of mammals- two auricles and two ventricles.

Q: In humans the wall of the left ventricle is thicker than that of the right ventricle. This…

A: Cardiovascular system The circulatory system is also referred to as the cardiovascular system. It is…

Q: 1- The left ventricular wall of the heart is thicker than the right wall in order to…

A: Introduction :- Near the heart base, the ventricular wall is thickest, and it thins out to 1-2 mm at…

Q: An ectopic pacemaker refers to the condition in which _____.   A the rate at which the SA node…

A: An ectopic pacemaker refers to the condition in which the rate at which the SA node cells undergo…

Q: The normal pacemaker of the heart is the ______.   A sinoatrial node   B left atrium   C…

A: Heart is an important organ that pumps blood. Heart is myogenic in nature meaning it is capable of…

Q: Select the correct one, Which of the following would not increase Cardiac Output? A. increase blood…

A: We know that, The amount of blood pumped by the ventricles in 1 minute is measured in terms of…

Q: Blood leaves the right ventricle through the ______.   A pulmonary trunk   B right atrium   C…

A: The human heart is situated in the middle of the thoracic cavity in a space called the mediastinum.…

Q: A heart murmur would be detected in the pathological situation in which blood was flowing from the…

A: Heart murmurs are defined as the blowing or whooshing sound which is heard during a heartbeat caused…

Q: he inferior vena cava brings blood from the lower regions of the body and empties into the…

A: the inferior vena cava is the largest vein and it carries deoxygenated blood from the lower body…

Q: Blood pressure sounds heard when listening to the brachial artery are caused by _______.   A…

A: Stethoscope is used to hear the sound of blood pressure. These sounds will not be heard through…

Q: Nursing When comparing Ist, 2nd and 3rd degree heart block: a. Which has the same contraction rate…

A: In heart blocks, the main problem arises because the contraction from the SA node reaches either…

Q: What occurs during the atrial reflex? a. Atria slow their filling rate. b. There is a decrease in…

A: Answer is d.) an increase in heart rate occurs in response to an increase in blood volume within the…

Q: Which statement is true? A. All arteries carry oxygen-rich blood. B. All veins carry oxygen-rich…

A: The heart pumps blood and circulates it throughout all the body parts for their functioning. The…

Q: Heart failure occurs when   a. the cardiac output is 15 liters per minute when you are watching…

A: A heart failure means that the heart muscle doesn't actually  pump as much blood as per  body…

Q: In a normal heartbeat the atria contract ______.   A at exactly the same time as the ventricles   B…

A: Rhythmic pulsation of the heart as a result of an action potential is known as the heartbeat. The…

Q: Even though it is trivial that Beta Blockers might have negative inotropic effect on the heart, but…

A: Beta-blockers act on the Beta 1 receptors which are located in the heart and it slows down the…

Q: Match the following:   ?  Myocardium  ? Parietal Pericardium   ? Endocardium  ?    Visceral…

A: Step 1 The heart is a hollow, fibromuscular conical pyramidal mesodermal organ that lies obliquely…

Q: Which of the choices below best describes the systemic circulation of blood? a. The flow of blood…

A: The circulatory system is one of the most essential systems in the body. The function of the…

Q: An increase in mean blood pressure may be due to? a) an increase in heart rate b) an increase in…

A: During blood flow, blood exerts a force on the blood-carrying vessels. We know the pressure is the…

Q: During the cardiac cycle, when would you expect to hear the second heart sound? O a) After ejection…

A: The timeframe that starts with compression of the atria and closures with ventricular unwinding is…

Q: If the AV node was damaged, the parts of the heart that would fail to contract are (the) O a. right…

A: The cardiovascular system is a network of arteries and veins in which the heart pumps blood. One of…

Q: a) Referring to the Figure , which part of the heart's electrical conduction is known as the…

A: A pacemaker is a little gadget that is put under the skin in your chest to help control your pulse.…

Q: (a) (b) The part of the illustration in the middle (b) shows O Pressure at which you would hear the…

A: This illustration shows the process of measuring arterial blood pressure using sphygmomanometer and…

Q: One difference between the semilunar valves and the atrioventricular valves is that only the…

A: The valves that are found between the atria and ventricles are termed as atrioventricular valves,…

Q: In the pause between the 2nd sound (dub) of one beat and the 1st sound (lub) of the following beat…

A: The heart has two major sounds which are referred to as lub and dub. The first sound of the heart is…

Q: Which of the following would not increase Cardiac Output? A. increase blood epinephrine…

A: The amount of blood pumped by the ventricles in 1 minute is measured in terms of cardiac output…

Q: In a healthy heart, which of the following statements is TRUE? A) Depolarization of the…

A: Answer- Option C. It's description has been mentioned in next step that is as follows-:

Q: Double-loop circulatory systems are found in adult amphibians, reptiles, birds, and mammals.…

A: The double-circulatory system passes the blood twice through the heart, per circuit. The…

Q: f the sinoatrial node stopped generating action potentials the heart would _____.   A stop beating…

A: The heartbeat starts with an impulse generated by the sinoatrial node (SA node) also known as the…

Dissection

Dissection is the process of cutting up the tissue of a dead or live animal or plant, to do anatomical studies and surgical treatments. The purpose of dissection is to learn more about the overall structure of organs and organ systems and thereby understand the physiology of the organism.