Clusters of neurons in the medulla oblongata thatregulate blood pressure are known collectively as________.a. baroreceptorsb. angioreceptorsc. the cardiomotor mechanismd. the cardiovascular center

Q: What happens to preload when there is venousconstriction in the veins?a. It increases.b. It…

A: The heart is a muscular organ in most animals. It pumps blood through the blood vessels of the…

Q: The circulatory route from aorta to the venae cavae is the __________ circuit.

A: The heart is the most important organ for the body and made up of several different types of tissues…

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: В A (A)Capillaries (B) LAYERS 42. ARTERIOLES 48. 43. TUNICA INTIMA METAARTERIOLES 44. ARTERIAL 49. .…

A: Hi, Thanks For Your Question.  Answer :  42.  A Is Arterioles 43.B Is Meta ARTERIOLES 44. C Is…

Q: The pressure sensors in the major arteries near the head are called ____ .

A: Blood pressure is the pressure of blood against blood vessels. It is the pressure exerted in the…

Q: Explain the main structural differences between arteries and veins that are responsible for their…

A: Blood pressure is the pressure exerted by the arterial wall or blood vessel when the blood flows…

Q: All arteries in the body contain oxygen-rich blood, with theexception of thea. aorta. c. renal…

A: Answer is b.)  pulmonary arteries.

Q: The finest passages through which electrical signals pass before reaching the ventricular…

A: Introduction: The muscle of heart is composed of small cells through which electrical signals are…

Q: Which of the following is NOT a population of pacemaker cells in the heart? a. papillary muscles b.…

A: D) purkinje fibre system

Q: When a person engages in strenuous, prolonged exercise, a. blood flow to the kidneys is reduced.b.…

A: Exercise is very important for the body. It proves flexibility in the body, improves the postures,…

Q: Under what conditions will the myogenic mechanism slow blood flow into a capillary bed? O rising…

A: Myogenic mechanism refers to the the response of the arteries to the increasing blood pressure. The…

Q: The cardiac conduction system includes all of the following except:- a. the SA node. b. the AV node.…

A: Cardiac conduction system is made up of various muscles which send signals to the cardiac muscles…

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: Blood pressure can be significantly affected by (a) cardiac output (b) peripheral resistance (c)…

A: The wall of the arteries experiences a force that is exerted by the blood, this force is called…

Q: Hypertension is when the pressure of the blood against the walls of the arteries is too high.…

A: Answer:  HYPERTENSION = This is the increase in the pressure of blood throughout the body blood…

Q: A patient who has normal blood pressure (systolic and diastolic) also hashardening of the arteries,…

A: The hardening of the arteries is a disorder known as Arteriosclerosis . It occurs when the blood…

Q: In veins the ______ than in capillaries.   A blood pressure is higher and flow velocity is slower…

A: The Blood vessels are the part of our vascular system that is responsible for transporting blood and…

Q: Blood flow in the coronary circulationa. increases during systole.b.increases during…

A: Coronary circulation is the circulation of blood in the blood vessels which supply blood to the…

Q: Plasma solutes enter the tissue fluid most neasily froma. continuous capillaries.b. fenestrated…

A: Answer is b.) fenestrated capillaries.

Q: During which of the following periods are the large elastic arteries distributing blood to smaller…

A: The cardiac cycle is referred to as one heartbeat that consists of one cycle of contraction and…

Q: Standing for a prolonged period of time can cause ... a. Decline in venous return  b. A drop in…

A: Venous return is the flow of blood from peripheral regions to back to right atrium . Factors which…

Q: The T wave represents: a. Depolarization of the ventricles b. Repolarization of the atria c.…

A: ECG (Electrocardiogram) can be outlined as the graph which represents the electrical activity of the…

Q: An increase in mean arterial pressure can result froma. an increase in peripheral resistance.b. an…

A: Mean arterial pressure is defined as the average arterial pressure in one cardiac cycle, which…

Q: The QRS wave of an ECG is produced by. a. depolarization of the atria. b. repolarization of the…

A: ECG or electrocardiogram is a diagram or graph of the electrical activity of heart that is produced…

Q: Which of the following is/are involved in regulating blood pressure? a. heart b. baroreceptors c.…

A: Blood Pressure can be defined as the pressure exerted by the blood flowing in the blood vessels on…

Q: Concerning ventricular filling, choose the CORRECT statement? O a. Begins during isovolumic…

A: 1)The left ventricle takes blood from the left atrium during diastole, which is then discharged into…

Q: If blood pressure suddenly drops (not more than 10 mmHg) which of these mechanisms will be activated…

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

Q: After passing through the inferior vena cava blood passes through the A coronary sinus B posterior…

A: The cardiovascular system, also known as the circulatory system, is made up of a blood pumping…

Q: Blood flows through the vessels references in the above image during:

A: Heart  It is the main blood pumping organ of the body as it is formed of Cardiac muscles. There are…

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: Which portion of the ECG corresponds torepolarization of the atria?a. P waveb. QRS complexc. T…

A: The cardiac action potential refers to a brief variation in the membrane potential through the cell…

Q: Which of the following is most likely to cause a decrease in blood pressure (BF O a) A decrease in…

A: Increase in blood pressure stimulates parasympathetic nervous system which leads to relaxation of…

Q: During ventricular diastole, pressure in the ventricles falls to ____ mm Hg, while the pressure…

A: Blood pressure is the pressure of circulating blood against the walls of blood vessels. Blood…

Q: All the blood that passes through the aorta, except the blood that flowsinto the coronary vessels,…

A: Resistance is a force that opposes the flow of a blood.

Q: Ashon wakes up at 8am, when the flow rate in an artery supplying the small intestine at rest is 1…

A: The autonomic nervous system of our body is divided into two major parts: the sympathetic and…

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: blood flow in the left coronary artery is less during systole than diastole

A:

Q: The onset of Ventricular diastole is associated with: A. the closing of the aortic valve B. the…

A: Human heart is composed of two auricles (atria) and two ventricles. Cardiac cycle consists of…

Q: Velocity of blood flow is the slowest in a. muscular arteries. b. capillaries. c. veins. d. elastic…

A: The circulatory framework, additionally called the cardiovascular framework or the vascular…

Q: Right and Left Ventricular pressures differ during: A. the entire cardiac cycle B. diastole C.…

A: The human heart is 4 chambered that is there are 2 auricle and 2 ventricle. The Diastole is the…

Q: The heart’s internal pacemaker beats by: a. an internal implant that sends an electrical impulse…

A: The heart is a muscular organ in numerous animals, which siphons blood through the veins of the…

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: Calcium channel blockers are drugs that are given to cause a. an increase in the volume of blood…

A: Introduction: When voltage-gated sodium ion channels open temporarily on a nodal cell, sodium raises…

Q: Low pH, if detected in the aortic arch, will cause the medulla oblongata to activate the

A: Sympathetic nervous system and parasympathetic nervous system are division of autonomic nervous…

Q: Which of these events occurs during (ventricular) systole? A)Only the left ventricle contracts.…

A: Diastole and systole are two phases of the cardiac cycle. Systole occurs when the heart contracts to…

Q: Sympathetic impulses to the smooth muscles in the walls of arteries and arterioles produceA.…

A: “Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: time of ventricular repolarization [Choose ] [Choose] time of atrial repolarization A time of…

A: ECG means electrical activity of heart represented in a graphical form. Electrocardiography is a…