Order the contraction of the heart involving the nodes starting with blood entering the right atrium and left atrium.     Sinoatrial node signals contraction to surrounding tissues   Left atrium contracts and Atrioventricular

Q: Rupinder is 70 years old and he has a medical history of Heart Failure. This developed after he…

A: The heart is made up of three layers: the pericardium, the myocardium, and the endocardium. Heart…

Q: RIGHT ATRIUM is letter _ CIRCUMFLEX ARTERY is letter _ LEFT CORONARY ARTERY is letter _ APEX OF…

A: Heart is a mesodermally derived organ that helps in the circulation of blood in the human body. It…

Q: An individual s venous return to the heart at this moment contains much less oxygen than it did…

A: Less oxygen in the venous blood means that oxygen has been extracted and is being used in the…

Q: Which an appropriate direction of blood flow in the heart * O Blood from pulmonary veins flows to…

A: Heart is defined as the type of muscular organ that is located behind and slightly left to the…

Q: Part A - Why do arteries have many more elastic fibers than veins? O They have less pressure during…

A: Why do arteries have many more elastic fibers than veins:

Q: Heart Anatomy The human heart has _# chambers. The top chambers TYPE are called and the bottom are…

A: To answer the blanks that are missed. The paragraph talks about heart anatomy.

Q: The heart would develop normally; the ECM composition does not affect cardiomyocyte differentiation…

A: In the myocardium, Extracellular matrix (ECM) is remodeled in association with many cardiovascular…

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: 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: Phase 1 Phase 2 Phase 3 Phase 0 Phase 4

A: Action potential is a brief change in voltage across the cell membrane in a the heart cells. This…

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: Which side of the heart do you think must pump harder under normal conditions?    Group of answer…

A: The heart is the organ that is central to the cardiovascular system of the body. The heart is…

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

A: The human circulatory system is responsible for the circulation of blood through the body. It is…

Q: 1. Decreasing heart rate is under the control of what nervous division? 2. What is the resting heart…

A: Acetylcholine released by the parasympathetic nervous system is responsible for the reduced heart…

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: 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: Fill in the chart Drug Classification Effect on Heart Rate Epinephrine     Acetylcholine…

A: Cardiac drugs are the drugs that used to improve  or treat the disorders associated  with…

Q: T/F question Sphincter muscles are a ring of muscle around a tubular organ. Muscle fibers are made…

A: The digestive system consists of oesophagus which helps in bringing food into the stomach through an…

Q: 1. Decreasing heart rate is under the control of what nervous division?

A: Hi! Thank you for the questions. As you have posted multiple questions, I will be answering the…

Q: Do it

A: Cardiac muscarinic antagonists are the agent that inhibits the function of the muscarinic receptors.…

Q: Which properties of the electrocardiogram are not true? O A. The P-Wave corresponds to excitation of…

A: Circulatory system is a type of body system which involves circulation of body fluids,…

Q: In 1st degree heart block there is Progressively prolonged PRI followed by QRS drop O PRI > 0.20 in…

A: Heart block is a medical emergency where the heart beats at a slower or irregular rate. A…

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: 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: If you cut all autonomic nerve in elevation to the heart  muscle in a person at rest the heart would

A: Heart rate, also known as pulse, is the number of times your heart beats per minute. A normal heart…

Q: Valve #23 is a ______ valve based on its structure and based on which blood vessel is bring the…

A: Blood goes passes through a valve prior to leaving each chamber of the heart. The valves stop the…

Q: If an individual with Type B+ requires a blood transfusion, list out the specific blood types that…

A: Blood transfusion is a blood transfer process in which an individual donates blood to the recipient…

Q: The picture above shows what on the ECG?

A: The picture above shown is ECG of Sinus rythm.

Q: What are funny channels in the heart? Pacemaker Na channels that open upon membrane depolarization O…

A: Pacemakers- Electrical impulses generated by the heart muscle that causes the heart to beat…

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: Hypertension increases afterload for the heart which in turn   a-decreases Stroke Volume b-increases…

A: Afterload is the pressure that the heart muscles need to work against to eject the blood…

Q: Which of the following is false? A Actin and myosin are major components of the skeletal muscle…

A: Muscle system is made up of soft tissues that produces tension which results in the generation of…

Q: You are conducting an exercise test, and the ability to read the ECG progressively gets worse. By…

A: Ask a coworker for help. The test is stopped only when the diagnostic criteria have been reached or…

Q: Action potential of the heart it occurs when the cell reaches a point of stimulation, the sodium…

A: The human heart is responsible for generation of action potential (myogenic) that is the reason for…

Q: The function of the right and left bundle branches is to _____.   A rapidly transmit action…

A: The atrioventricular bundle (bundle of His) is a continuation of the specialized tissue of the AV…

Q: In the heart, lub - dub refer to, in order, the O closing of all valves simultaneously O closing of…

A: The cardiac cycle explains the cardiac event that occurs during the contraction and relaxation of…

Q: Can you figure out which valve would this (black arrow) be? (Hint: Follow the direction of blood)…

A: The heart of mammals generally consists of four valves that are mitral valve, tricuspid valve, and,…

Q: Can you help me with questions 21 and 22

A: Hormones are chemical messengers that bind to their specific receptors that are distantly located.…

Q: These These blood vessels are the [ Select ] arteries and the coronary

A: The arteries, arterioles, veins, venules and capillaries are the blood vessels forming the…

Q: correct statement about gap junctions:

A: The cardiac muscle tissue forms the walls of the chambers of the heart. Intercalated discs are…

Q: Why does blood keep flowing through the vascular system even during diastole? Valves in veins…

A: Blood is a circulating biological fluid that contains plasma and blood cells. Erythrocytes (red…

Q: Please answer fast Xena is chewing some plant to get some energy. Some of the plants where Xena…

A: There are four types of nodal tissues found in our heart which are responsible for generating action…

Q: Why is nitroglycerin given as a treatment for myocardial infarction? What does it do? Nitroglycerin…

A: Myocardial infection or heart attack is a blockage of blood flow to the heart muscle. It occurs when…

Q: Which of the following channels are involved in the action potential in contractile cells of the…

A: Autorhythmic cells generate action potential which transfer down to the contractile cells of the…

Q: An electrocardiogram (ECG) measures the ____.   A difference in electrical potential between two…

A: An electrocardiogram or ECG is a simple non-invasive test conducted on the patient to check his /…