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

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: you move from a sitting position to a standing position. after 2 minutes of resting in the standing…

A:

Q: In pacemaker cells the movement of __________ into the cell through voltage-gated channels is…

A: The opening of channels that let positive ions flow into the cell can cause depolarization. Flow of…

Q: Which of the following is NOT associated with cardiac muscle contraction?   Contraction requires…

A: Cardiac muscle is one of the three types of vertebrate muscles. It is an involuntary, striated…

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: 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: Heart rate during exercise at 75% maximal oxygen consumption is determined primarily by     the…

A: Heart is the pumping organ in the body. It is responsible for pumping the blood to various parts of…

Q: Now try feeling for a “pulse” from a vein on the back of your forearm, the side opposite where you…

A: Arteries Veins Arteries usually carry the blood which are oxygenated Veins carry the deoxygenated…

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: also contract with the rest of the cells in the heart wall. are special neurons that convey signals…

A: Sinu atrial nodes are specialised myocardial structures located in the right Atrium which causes the…

Q: Let's review the electrical events that occur during a heartbeat. Match each phase of the ECG in the…

A: A. The atria depolarize ( P wave)B. The ventricles repolarize (T wave)C. (Diastolic interval; the…

Q: When heart muscle is suddenly starved of blood so that it dies, this is called ___.     fusiform…

A: Acute myocardial infarction

Q: Which is NOT a factor that increases stroke volume with endurance training.       Reduced cardiac…

A: ANSWER;- Reduced cardiac and arterial stiffness is not a factor that increases stroke volume with…

Q: While your jogging you noticed your heart rate increases , yet your blood pressure stays the same.…

A: Circulatory system- It is a system that is responsible for circulating the blood all over the body…

Q: Let your arm hang limply by your side again until the veins become very visible, then slowly raise…

A: Introduction;- The heart is a muscular organ shaped like a fist, located at the back and slightly…

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: What effect do you think this mutation will have on his heart rate compared tosomeone with a normal…

A: The heart is a four chambered structure that is responsible for pumping the blood into the arteries…

Q: You Measure Mrs Jones pulse as well 54 beats in 30 seconds what would you record her pulse rate?

A: Pulse rate, also known as heart rate, that is number of times your heart beats per minute.  Normal…

Q: Dysrhythmia - Basic A Question 4 of 35 What is the cardiac rhythm? II 3 wh Sinus tachycardia Atrial…

A: Question is related to interpretation of ECG reading.

Q: which part of the brain is affected when heart rate increases during exercise

A: The medulla oblongata is a part of the brainstem, located at the bottom of the brain, where it…

Q: Saved He nich of the following statements is true about the regulation of the heart by the autonomic…

A: Ans. The ture statement is parasympathetic nerves release acetylcholine at cholinergic nerve endings…

Q: Each contraction of cardiac muscle is caused by a signal from the CNS O False O True

A: The circulation of blood (containing nutrients and oxygen) throughout the body is governed by the…

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 /…

Q: A likely effect of parasympathetic input to the heart would be to _____.     Open additional…

A: Introduction:- The parasympathetic nervous system originates from the medullary central sites (the…

Q: The refractory period of A.P. of cardiac muscle fiber is than skeletal muscle. shorter O equal O…

A: The refractory period is the time period during which the organ or cell is unable of repeating an…

Q: Observation 1. What is the Heart Rate? 2. What is the rhythm? Regular or Irregular? 3. How is atrial…

A: Heart rate = 1500 / no of small boxes between two p waves.  In given ECG no of small boxes between…

Q: Norepinephrine is released by the receptors on pacemaker cells to speed the heart rate. nervous…

A: The peripheral nervous system or PNS can be divided into afferent (or sensory neuron) and efferent…

Q: What is the cause of a heart attack?

A: The heart is the most important organ in the body which pumps the blood throughout the body. The…