Why, in physiological terms, does systolic blood pressure increase from rest to exercise and why would diastolic blood pressure remain relatively constant from rest to exercise? Discuss the roles of the nervous system, endocrine, and baroreceptors

Q: In what ways are autorhythmic fibers similar to and diff erent from contractile fibers?

A: Heart is a four chambered cardiovascular organ pumping blood throughout the body. The auricles and…

Q: What is the process of counter current exchange mechanism as established by the vasa recta? Where in…

A: It is a series of blood vessels, i.e. tiny capillaries that surround Loop of Henle.  It forms a…

Q: Which of the following characteristics imparts autorhythmic cells with the ability to function…

A: Autorhythmic cells are those cells which are excited by self. These cells generates action potential…

Q: In cardiac autorhythmic pacemaker cells, how does parasympathetic stimulation make it more…

A: The heart shows autorhythmicity which means that the heart itself can initiate the heartbeat.…

Q: activities demand more body movements? Explain. Give 2 systems that are directly affected whenever…

A: * when we exercise we feel increasing in breathing and hear beat too. * we require more oxygen when…

Q: In what respect does blood clotting represent a negativefeedback loop? What part of it is a positive…

A: When the output of any process is reduced or changed, it is called a negative feedback mechanism.…

Q: A cardiologist observed an cntargc4 QRS wave in the ECU of a patient. What does it indicate?

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

Q: How do variables such as length and diameter of a tube and viscosity of a liquid (blood) affect the…

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

Q: Why is it possible for acetylcholine to actually cause an increase in stroke volume, even though…

A: Acetylcholine is one of the most vital neurotransmitter in the human body, that is seen in both the…

Q: What is the physiological function of pulse rate in response to persons active activities?

A: the measurement of heart rate or the number of heart beats is called pulse rate. when a person…

Q: 51. A 38-year-old woman has a blood pressure of 120/72 mm Hg while supine and 118/78 mm Hg while…

A: Introduction: In human beings, the circulating blood is subjected to gravity. It controls the fluid…

Q: As a result of heart failure, compensatory mechanisms become activated and ultimately lead to…

A: Correct response to this particular question will be, a reduction in both heart rate and blood…

Q: During exercise, arterial blood pressure changes very little. How￾ever, cardiac output may double…

A: Exercise means Regular or related practice of a  bodily organ. Or physical effort for the sake of…

Q: Briefly describe the events of excitation-contraction coupling in cardiac muscle cells.

A: Cardiac muscles are also called myocardium, which is a type of muscle in the body that is…

Q: Diagram electrical conduction of the heart and discuss each component (SA node, AV node, etc).

A: Dear student, we are authorized to answer one question at a time. since you have not mentioned which…

Q: A patient is displaying an abnormally low increase in stroke volume in response to exercise. Put…

A: let's delve deeper into each of these cellular mechanisms:Impaired Contractility of…

Q: Match the pieces of the negative feedback arc that regulated the increase in stroke volume seen…

A: Answer given in step 2. Thank you.

Q: If you were running late for lab and had to run to get there on time, the sympathetic neurons of…

A: The sympathetic nervous system (or SNS) is involved in the innervation of major organ systems across…

Q: Why is the cardiac action potential propagated more slowly in an AV node cell then in an atrial or…

A: Impulse conduction occurs by the depolarization that results into action potential. It is initiated…

Q: Briefly explain the arrangement of vasa recta for  counter current mechanism?

A: Introduction: The capillary network supplying blood to the renal medulla and is highly permeable to…

Q: splanchnic, cutaneous, and skeletal muscle vascular beds during sustained exercise (distance

A: The amount of blood pumped by the left ventricle in a minute is called as the cardiac output. It's…

Q: How does the excitation-contraction coupling in skeletal muscles and in cardiac muscles differ?

A: Introduction: The excitation/ depolarization of the muscle fiber results in developing action…

Q: Describe the physiology behind the change in blood pressure and heart rate change after exercise

A: The blood pressure is the pressure that is applied on the walls of the arteries. The pressure is…

Q: If branch A is twice the length of branch B, what is true regarding the resistance in branch A…

A: The Poiseuille's law states that the flow of fluid is related to various factors including length…

Q: Upon the sensing of a slowing of NaCl flow in the ascending loop of Henle/DCT, what primary action…

A: The distal convoluted tubule is a structure in the Kidney nephron between the Henle's collecting…

Q: Assume that one ventricle of a child’s heart has an EDV of 90 mL, an ESV of 60 mL, and a cardiac…

A: Cardiac output: is the product of heart rate multiplied by the stroke volume. The stroke volume…

Q: Why is the rate of cardiac muscle relaxation faster when a positive inotropic agent is present?

A: Inotropic agents refer to those substances that either increase or decrease the force of contraction…

Q: Make a list of the different physiological equations: Mean Arterial Blood Pressure (MAP) = Oxygen…

A: An oxygen transport was being used to study the blood flow autoregulation effects as well as the…

Q: During rhythmic, moderately intense aerobic exercise, there is a redistribution of blood flow…

A: ANSWER;- a) beta-2 receptors cause dilation and increased blood flow to the exercising muscle.

Q: Make a list of the different physiological equations: 1. Fick equation for oxygen diffusion = 2.…

A: We can say that Physiology is an important division of the biological sciences that closely studies…

Q: Parasympathetic stimulation also increases the delay between atrial and ventricular contractions.…

A: In physiology, the parasympathetic nervous system is responsible for the stimulation of…

Q: If all plasma membrane Ca21 channels in contractile cardiac muscle cells were blocked with a drug,…

A: A heart muscle cell is similar to a large house with several doors and rooms. Ion channels are…

Q: The role of the bundle of his, bundle branches, and purkinje fibers is to Help conduct the…

A: Bundle of his, bundle branches and purkinje fibres are all conducting fibres found in the heart.…

Q: Write the equation that defines the contributions of the three determinants of resistance?

A: The movement of blood through a vessel, tissue, or organ which is generally expressed in terms of…

Q: Unlike skeletal muscle, cardiac muscle doesn’t undergo tetany. Explain how this is achieved and why…

A: Cardiac muscle or myocardium is the muscle that forms the heart tissue. These are striated and…

Q: Briefly describe how RAAS and ADH affect blood pressure

A: The pressure that the circulating blood exerts against the walls of the blood vessels is referred to…

Q: Considering the Starling forces (not cardiac Frank-Starling law) affecting fluid movement in a…

A: Starling hypothesis says that, fluid movement due to filtration on the wall of a capillary is depend…