During a heart attack, the blood flow to cardiac muscle tissue is blocked, and cardiac muscle cells in the affected area generally die. Why will cardiac function rarely return to normal after this takes place

Q: Explain the conduction system of the heart. How heart rate is controlled in our body.

A: The conducting system of heart It is made of myocardium that is specialised for initiation and…

Q: Fill in the blank:  Endings of parasympathetic nerve fibers secrete _______________________, which…

A: The cardiovascular system is responsible for circulating the blood throughout the body so that…

Q: Some people have abnormal cords or bridges of myocardium that extend from atrium to ventricle,…

A: The second most common type of coronary arterial abnormality is the Myocardial bridge. It is the…

Q: The ____________ nerves innervate the heart and tend to reduce the heart rate.

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

Q: Fill in the blank:  Excess tissue fluid is returned to the venous circulation by means of…

A: The lymphatic system is a network of tissues and organs that help rid the body of toxins, wastes,…

Q: you have a patient with heart murmer. Her tricuspid valve will not close properly. Explain how this…

A: The murmer is the sound of blood flowing.It may be passing through an abnormal heart valve, or it…

Q: Name the vessels which recieve blood from the heart and state the chambers which pumps into those…

A: Vessels are the component of circulatory system of the body. Their function is transportation of…

Q: Which of these organs is able to tolerate the greatest reduction in blood flow? a. Brain b. Heart…

A: Blood flows in the body consists of the red blood cells, which contain haemoglobin. The haemoglobin…

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: 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: Explain the events in a cardiac cycle.

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

Q: Describe the flow of blood from the heart through all major parts of the body

A: The cardiovascular system includes heart and blood vessels that work together to pump the oxygen…

Q: Why do you think it is important for heart valves to ensure that blood flows in only one direction…

A: Human heart is the Center for regulating blood across the body. It is made up of cardiac Muscles…

Q: Which of the following is a large blood vessel that carries blood away from the heart? A. Vein B.…

A: Heart is a major organ which pumps oxygenated blood to the different parts of the body and recevies…

Q: Describe the path of blood through the cardiac circuits

A: Anatomy and physiology are the branches of biology, anatomy deals with the study of the structure of…

Q: Which of the following best describes the flow of oxygenated blood in the heart? O Pulmonary veins -…

A: Human heart consists of 4 chambers: two upper chambers (right and left atria) and two lower chambers…

Q: The death of cardiac tissue from lack of blood flow is commonly known as a heart attack, but…

A: Every muscle and tissue of our body needs oxygen for its survival, so as your heart muscles. A heart…

Q: Structures in order as it relates to the pathway of blood flow through the heart/body after is…

A: The oxygenated blood from the lungs are sent to the heart via Pulmonary Vein which drains the whole…

Q: ____ carry blood away from the heart and ____ carry blood toward the heart. a. Veins . . . arteries…

A: Step 1 Blood vessels are tubes carrying blood, associated oxygen, nutrients, water, as well as…

Q: Blood in the heart chambers is separated from the myocardium by a thin membrane called the _____.

A: The correct answer is Endocardium .

Q: What changes in cardiac function might you expect after surgical replacement of a defective heart…

A: The mammalian heart is a four chambered muscular organ with valves. The valve between the right…

Q: What activities of heart are controlled by sympathetic system and parasympathetic system.

A: The heart is a muscular organ that is divided into four chambers: Left auricle, right auricle, left…

Q: During the systolic phase of the cardiac cycle, the heart is

A: The cardiovascular system, also referred to as the circulatory system or the system, is an organ…

Q: why a leaking heart valve may cause heart damage over time?

A: Leaky heart valve can affect any of the four heart valves: 1)Aortic valve ( left ventricle and…

Q: In response to a severe hemorrhage, blood pressure lowers, the heart rate increases dramatically,…

A: The human body is made of different organ systems. Each of them is involved in maintaining the…

Q: Why is it important that arteries and veins are lined with muscle tissue? so blood can diffuse out…

A: Arteries are blood vessels that carry oxygen-rich blood from the heart to the tissues and organs.…

Q: When you are cold, your blood vessels contract. However, your heart rate and blood pressure…

A: When the temperature increases or decreases beyond the set point of the body there is a…

Q: Rank the blood vessels from lowest blood pressure to highest blood pressure.

A: Our heart pumps blood to reach all parts of the body from head to toe. To reach everywhere it has to…

Q: What tissue in the heart is responsible for setting the heart rate and stimulating the cardiac…

A: The heart is a muscular pumping organ that pumps the oxygenated blood throughout the body through…

Q: Phase C of the ventricular action potential is due to which of the following? otential (mV)

A: Ca+2 influx

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: Fill in the blank:  The fibers that carry cardiac impulses from the interventricular septum into the…

A: Cardiac impulses originate from the sinoatrial node that causes the contraction of the heart muscles…

Q: The cardiac cycle includes all the events associated with the flow of blood through the heart during…

A: The cardiac cycle consists of a period of relaxation called diastole, during which the heart fills…

Q: Fill in the blank:  Endings of sympathetic nerve fibers secrete _______________________, which…

A: Nervous system coordinates and controls the activities of the animals such as perceptions, behaviors…

Q: Drugs such as nifedipine slow the heart rate. Nifedipine can be described as what type of drug?

A: The heart is a smooth muscle organ that pumps oxygenated blood throughout the body. Deoxygenated…

Q: As the patient’s blood pressure decreased from the loss of blood, neural impulses transmitted from…

A: Blood is a body fluid in humans and other animals. It delivers necessary substances such as oxygen…

Q: A blood vessel with a few smooth muscle fibers and connective tissue, and only a very thin tunica…

A: Blood vessels help in circulating the blood throughout the body. Arteries carry blood away from the…

Q: Role cardioregulatory centers play in regulating heart rate

A: Cardio regulatory center is a part of brain that found in the medulla oblongata. It is responsible…

Q: Describe the spread of the action potential through the heart’s conduction system.

A: A transient shift in voltage (membrane potential) across the cell membrane of heart cells is…

Q: When the SA node fails, the AV node establishes a new intrinsic heart rate. This will result in…

A: The rhythm of the heart is normally determined by a pacemaker site known as the sinoatrial (SA) node…

Q: When you have a blockage of blood flow to the heart, it will likely result in what...?

A: Heart block is an abnormal heart rhythm where the heart beats too slowly,which results in the…

Tissue regeneration & repair

Tissue regeneration involves the restoration of tissue components by regrowth of damaged tissues. In contrast, tissue repair involves patching of injured tissue rather than restoring it. It is the proliferative capacity of the cells that decides the amount of regeneration against the repair that would occur in the tissue. Both regeneration and repair depending on the duration of the injury and response to the inflammation.