correct statement about gap junctions:

Q: Which ion movement causes depolarization in the contractile cells of the heart? Ca++ leaving the…

A: The human heart is a muscular blood pumping organ made up of electrically excitable cardiac muscle…

Q: Identify and describe the size, shape, and location of the heart and the path of blood through the…

A: The cardiovascular system is one of the 11 major body organ systems that is concerned with the…

Q: Which one of the following is a matching pair?  A Pulsation of the radial artery - values in…

A: Heart is the muscular organ in most animals that is involved in pumping blood through blood vessels.…

Q: Can the intraventricular septum prevents the electrical activity from stimulating the heart in a…

A: The intraventricular septum is present between two ventricles of the heart, generally preventing…

Q: Which of the following statements is correct? Group of answer choices Veins carry blood away from…

A: Veins  Veins are blood vessels that carry blood towards the heart. Stenotic heart valve Valve that…

Q: The conductance of which ion results in phase 2 characteristics in a ventricular myocyte action…

A: The non-pacemaker cardiac action potentials include the atrial and ventricular myocytes and Purkinje…

Q: . ECG depicts the depolarization and repolarization processes of a cardiac cycle. In the ECG of a…

A: The electrocardiogram (ECG) is the total amount of the action potentials of millions of…

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: When Ca2+ is released from troponin in the sarcomere, what is happening at the level of the heart?…

A: Calcium plays a vital role in muscle contraction. It interacts with protein actin and myosin. The…

Q: Which statement about activation of heart muscle cells is TRUE?   A when a person is resting only a…

A: The electrical conduction system of the heart transmits signals generated usually by the sinoatrial…

Q: in the heart's pacemaker cells, the timing of the heart rate is determined by the diffusion of…

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

Q: Chordae tendineae: Group of answer choices hold the AV valves in place. contract when the heart…

A: The papillary muscles of the heart are connected to the mitral and tricuspid valves cusps by thin…

Q: leukocytes

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Q: Drugs inhibiting sodium channels would most likely affect which of the following phases of the…

A: Ventricular action potential occurs when sodium ion channels open that causes depolarization. This…

Q: The heart beats without extrinsic stimulation from the autonomic nervoussystem. True or False

A: The autonomic nervous system can be defined as the type of nervous system which controls the body…

Q: Automaticity of the heart is the result of: Group of answer choices K+ leaking into the cell. Na+…

A: Automaticity of the heart is the result of:The answer is: more than one of the above.The Heart's…

Q: The pressure in the veins sufficiently high to drive the flow of blood into the heart is callec O…

A: The heart is a fist-sized organ that pumps the blood throughout the body. It is the primary organ of…

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: the skeleton of heart is composed of * O prominent loose connective tissue prominent loose regular…

A: Heart is a chief pumping structure in the circulatory system which composed of cardiac muscles . It…

Q: he left ventricle:   Question 21 options:   Has thinner muscular walls than does the right…

A: Our heart is a muscular organ that is like a fist in its size and is located just behind with…

Q: Where is the pacemaker of the heart located? What is it called? Trace the path of electrical…

A: The heart is a muscular organ located between the lungs slightly to the left. It functions in…

Q: An increase in heart rate leads to a increase in arterial pressure leads to a in end diastolic…

A: The heart is the central organ of the cardiovascular system of the body. It is a myogenic organ that…

Q: Which part of the heart is responsible for the muscular contractions that pump blood through it?…

A: Heart is a muscular organ present in thoracic cavity which helps in blood flow through out the body.

Q: Which of the following occurs during ventricular diastole? Blood returns to the heart Blood is…

A: We know that the Cardiac cycle is a repetitive cycle where a heart performs its functions. This…

Q: The volume of blood ejected from the left ventricle in each beat is ventricle. A greater than B…

A: The heart is a highly muscularized, involuntary organ of the body. It has four chambers consisting…

Q: Compared to the right ventricle, the left ventricle has all the following characteristics, except…

A: The human heart consists of four chambers, two atrium and two ventricles.  The blood flows into the…

Q: All of the followings are correct about the myogenic pacemaker except, --------------------- They…

A: The cardiovascular system is a principal organ system of the human body concerned with the transport…

Q: How does the muscle layer of the heart get oxygenated red blood cells to supply its need for oxygen…

A:

Q: A heartbeat starts when autorhythmic cells in the 1 [ Select ] (located in the right atrium) create…

A: When blood is circulated through heart to the body, action potentials propagate through the heart,…

Q: Describe the cardiac cycle of relaxation and contraction, and explain what causes each of the two…

A: The heart is a muscular organ that pumps blood to the body. The heart pumps the oxygenated blood to…

Q: During a heart attack, the blood flow to cardiac muscle tissue is blocked, and cardiac muscle cells…

A: The heart is a major organ in the circulatory system whose function is to pump blood throughout the…

Q: The heart’s pacemaker is called the (complete term)_________. The pacemaker is composed of…

A: The cardiovascular system consists of the heart, the blood vessels, and most importantly, the blood.…

Q: Which ONE of the following statements is TRUE? OA Cardiac myocyte contraction results primarily from…

A: Given here are some statements . Following I will be discussing which among them is correct and…

Q: An increase in end-diastolic volume always causes an increase in stroke volume in a normal heart…

A: Stroke volume It is the amount of blood that is forced out from the ventricle per cardiac cycle. It…

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: lar systole begins ventricular relaxation

A: Cardiac cycle : It is the sequence of events that occur from beginning of one heartbeat to the…

Q: Decreasing vascular decreasing cardiac will decrease blood pressure. or Dilation; contractions…

A: Blood is the primary transport fluid of the human body. It transports several important factors like…

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: A drug is found to partially inactivate fast sodium channels. Mow would this drug change the action…

A: Given: To find a drug that partially inactivate fast sodium channels. How it change the action…

Q: Which of these will increase the heart rate? O sympathetic stimulation of SA node O parasympathetic…

A: The heart has an autorhythmicity trait that allows it to beat without being controlled by the…

Q: When during the cardiac cycle do ventricles contain their maximal amount of blood? At the end of…

A: Cardiac cycle is referred to as the time period between the contraction of atria and the relaxation…

Q: Valves between which structures of the heart shown in the figure control the direction of the…

A: The heart is located in the centre of the chest, just to the left of centre, about the size of a…

Q: Describe one cardiac cycle, beginning with both atriaand ventricles relaxed

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

Q: The entry of calcium into a ventricular muscle cell helps to maintain depolarization of the membrane…

A: A well-working conduction system generates a depolarization wave, which causes the atria and…

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…