Complete the sentence: ions initiate depolarization of cardiac muscle cells and ions are responsible for repolarization. Select one: O a. Na*, K* O b. K, Na* O c. Ca, Na* O d. Ca?, K*

Q: Which of the following is unique to cardiac musclecells?a. Only cardiac muscle contains a…

A: The cardiac muscles show the characteristics of both smooth and striated muscles. The cells of…

Q: In the cardiac cycle tracings below, which statement is CORRECT? Ventricular Pressure 100 Aortic…

A: Introduction:-  cardiac cycle is set if 8 steps which lead to filling if blood in heart snd then…

Q: Place the labels in order, denoting the sequence of events of the cardiac cycle beginning with…

A: Cardiac cycle is the performance of the human heart from the ending of one heartbeat to the…

Q: If a baroreceptor detects low blood pressure, which of the following will result? Group of answer…

A: Monitoring of blood pressure and it's adjustment is done by baroreceptors. Baroreceptors are special…

Q: Consider the equation cardiac output (CO) = stroke volume (SV) X heart rate Which of the following…

A: Afterload is the pressure the heart must work against to eject blood during systole. When…

Q: What two values are needed in order to calculate cardiac output (CO) for a ventricle? a.…

A: Answer is c.)  stroke volume (SV) and heart rate (HR) .

Q: In a blood pressure reading of 120/80, the 120 represents and the 80 represents . (a) diastolic…

A: Introduction: Blood pressure is the pressure exerted by the blood on the walls of the arteries.…

Q: An ECG measures a. changes in electrical potential during the cardiac cycle. b. Ca2+…

A: Introduction: ECG or electrocardiogram is a machine that helps analyse the condition of the heart.…

Q: Between 30 and 80 years of age, the cardiac output decreases by about A. 10 percent B. 20 percent C.…

A: Cardiac output is defined as the quantity of blood pumped out of the heart through the circulatory…

Q: Cardiac output cannot increase indefinitely because (a) available filling time becomes shorter as…

A: The circulatory system is a blood vessels network that delivers blood to body's every part. Blood…

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: 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: This diagram shows a _______ and the green things being released into the space are _____. A.…

A: The branch of biology associated with studying the functions of living organisms’ body can be…

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: Action potentials are spread rapidly between cardiac muscle cells by a. sarcomeres. b. intercalated…

A: An action potential is a way by which a neuron transports electrical signals.

Q: Write the word formula relating cardiac output, heart rate, and stroke volume. Give normal values…

A: Cardiac output (CO) is defined as  amount of blood pumped per minute by each ventricle. Number of…

Q: Describe the properties of the cardiac muscle, including automaticity, excitability, conductivity,…

A: Cardiac muscle or heart muscle is also known as myocardium. It is one of the three kinds of…

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: Define the terms contractility, preload, and afterload, and explain how these factors affect the…

A: Ans: Cardiac output: The heats efficiency is calculated by the volume of blood it pumps to the…

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: Answer question from image

A: Cardiac catheterization is performed to evaluate heart function, the presence of heart disease, and…

Q: Heart beat/rate is controlled by these groups of cells on the heart. a-SA node b-AV node c-nerve…

A: Heart rate is the speed of the heartbeat measured by the number of contractions of the heart per…

Q: Acclimatization at high altitude would include a.increased in contractility of heart and increased…

A: Acclimatization, also known as acclimation or acclimatisation, is the process by which an individual…

Q: A classmate who has been standing still for several hours working on a laboratory experiment…

A: Working on long laboratory experiments can result in fainting and this is very common.

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: Stroke volume is thea. amount of blood pumped by the heart per minute.b. difference between…

A: End-diastolic volume refers to the quantity of blood in the left or right ventricle at the end of…

Q: Below are drawings of three different action potentials. Two of these occur in the heart, and one…

A: An action potential is a term that denotes the change in the resting membrane potential upon stimuli…

Q: Explain the concept of tetany in skeletal muscle. Can cardiac muscle be tetanized? Explain the…

A: Tetanus is a condition of  involuntary contraction of skeletal muscles with increased frequency of…

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: Pulse is a direct measure of(A) blood pressure.(B) stroke volume.(C) cardiac output.(D) heart rate.

A: The pulse of a person is measured by placing one’s finger on the inside wrist of that person. The…

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: What is autorhythmicity? Describe how nodal cells function as autorhythmic cells to serve as the…

A: The cells associated with the function of creating the rhythmic impulses in order to set the pace…

Q: How would the left ventricle of a patient who had had high blood pressure for many years differ from…

A: Answer: Introduction: Left ventricular hypertrophy is expansion and thickening means hypertrophy of…

Q: It is generally accepted that a relatively low diastolic vascular pressure is more important than a…

A: The term blood pressure is used to describe the pressure exerted by the blood on the blood vessel in…

Q: Which of the following stimuli may produce an increase in heart rate? Select one: a. a threatening…

A: The correct answer is (c) a picture of a natural disaster.

Q: Which of the following forms of shock occurs as a result of expansion of the vascular compartment?…

A: A shock is a medical condition caused by a sudden drop in blood flow in the body. It can be caused…

Q: The atrioventricular valve on the same side of the heart as the origin of the aorta is the _____…

A: ATRIOVENTRICULAR VALVE It is the valve present between atrium and ventricle. It allows the flow of…

Q: The blood vessels responsible for variably distributing cardiac output among organs in the body are:…

A: Animal physiology is the systematic study of the supporting features, roles, and processes of…

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: Which of the following characteristics is NOT a property of cardiac muscles? Group of answer choices…

A: Our body consists of three types of muscles Smooth muscles, skeletal muscles, and Cardiac muscles.…

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: What is the consequence of the prolonged plateau of depolarization in ventricular myocytes?   a-it…

A: the consequence of the prolonged plateau of depolarization in ventricular myocytes.

Q: Give answer from image shown.

A: The cardiac physiology is defined as the study of the function of the heart that is healthy and…

Q: You wanted to prepare a fish dish for your grandfather that he loves the dried salted Codfish. But…

A: A fish can be desalted by Boiling the fish in water  and then heating under medium heat for 10…

Q: Discuss the differences between myogenic and neurogenic hearts and explain what the role of…

A: The heart is the main organ for the circulation of blood and transportation of oxygen throughout the…

Q: In the cardiac cycle tracings below, rapid ventricular filling occurs at which point on the figure?…

A: Introduction:- In cardiac cycle rapid ventricular filling occurs in atrial systole when the…

Mitochondrial Mutations

A mitochondrion is a cellular organelle that serves as the site for cellular respiration and energy production (ATP or Adenosine Triphosphate). It is a double-membrane-bound organelle and is only present in eukaryotic cells.