If the cardioinhibitory center of the medulla oblongata were damaged, which division of the autonomic nervous system would be affected, and how would the heart be influenced?

Q: In cardiac autorhythmic pacemaker cells, how does parasympathetic stimulation make it more…

A: The heart shows autorhythmicity which means that the heart itself can initiate the heartbeat.…

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: How does the cerebral arterial circle ensure that the brain has a constant supply of blood?

A: The cerebral arterial circle refers to the ring-like composition of arteries that encircle the…

Q: The heart is subject to lots of autonomic influence! How would sympathetic stimulation affect the…

A: The nervous system can be described as the human body’s control center. All body functions, such as…

Q: In your study of neuron physiology, you learned that depolarization is dependent on the sodium entry…

A: Heart can initiate contractions on its own by SA node (Sinoatrial node). It doesn't need external…

Q: Describe two effects on the heart of sympathetic nervous system stimulation.

A: Introduction: The nervous system is categorized into the peripheral nervous system (PNS) and the…

Q: Explain how vascular resistance and blood flow are regulated by (a) sympathetic adrenergic fibers,…

A: The heart is a muscular organ that pumps blood through the blood vessels of the circulatory system…

Q: The circulatory system, especially the heart, suffers damage if the shock is prolonged? Give reasons…

A: The circulatory system includes the most important organ of the human body,i.e. heart. It consists…

Q: Which part of the brain contains cardiac center ?

A: The cardiac muscle is the central organ of the circulatory system comprising two upper (right and…

Q: Describe the effect if the atria were to contract at thesame time as the ventricles, or if the…

A: The cardiovascular system is an organ system which distributes blood to all the parts of the body…

Q: You are testing a compound as cardioactive drug. You know the compound is an agonist of…

A: The sinoatrial (SA) node is known as the natural pacemaker of the heart, responsible for generating…

Q: How does acetylcholine cause a decrease in heart rate?

A: Acetylcholine is a neurotransmitter of autonomic nervous system of human. It releases from…

Q: What is the function of ventricles?

A: Ventricle is a hollow cavity present in an organ. In Brain, ventricle is a region of choroid plexus…

Q: If you were running late for lab and had to run to get there on time, the sympathetic neurons of…

A: The sympathetic nervous system (or SNS) is involved in the innervation of major organ systems across…

Q: Fewer action potentials travel up the afferent nerves to the medullary cardiovascular center, and…

A: The cardiovascular center is part of the autonomic nervous system and is responsible for controlling…

Q: A patient entered the local emergency room and had an EKG taken. The attending physician stated that…

A: Purkinje Fibers and Heart Rate: The attending physician's observation about a Purkinje…

Q: Explain why the walls of the atria are thinner than those of theventricles, and why the walls of the…

A: The heart of human beings is four-chambered, comprising of two atrial chambers and two ventricular…

Q: Predict the effects of a drug that blocks the sympathetic nervous system on blood pressure and heart…

A: Sympathetic nervous system (SNS) and para sympathetic nervous system are the two main divisions of…

Q: what drives the enhanced sympathetic outflow to most other arterioles, the heart, and the veins and…

A: The sympathetic nervous system (SNS) is part of the autonomic nervous system (ANS), which also…

Q: What is the action of Sympathetic division (arousing) on heart beat functioning when a crisis…

A: Nervous System -- Structurally the nervous system is divided in to two parts ( i ) Central Nervous…

Q: Parasympathetic – Slows heart rate because it increases flow through _____ channels and decreases…

A: The parasympathetic nervous system can be defined as the type of nervous system that conserves the…

Q: Explain cardiopulmonary function in patients with Parkinson's Disease?

A: Parkinson's disease (PD) is a neurological condition that worsens over time and mostly impairs…

Q: How would an ineffective right ventricle affect the pulmonary and systemic circulation?

A: The human heart has four chambers, are left atrium, left ventricle, right atrium, and right…

Q: What is the mucociliary escalator?  What would the consequences be to a person if it were damaged?

A: In the human respiratory system, there are two zones called the respiratory zone where actual…

Q: Roberto is a 78-year-old male who has recently been diagnosed with Class III Congestive Heart…

A: Stiffness of left ventricle is caused by coronary artery clogged with deposits of cholesterol, high…

Q: what is the strucure of left ventricle

A: The left ventricle, located in the lower left portion of the human heart, is responsible for pumping…

Q: Why is your heart rate high after running a short distance, but not as elevated after running a much…

A: Introduction: To maintain blood circulation throughout the body, the heart beats nonstop. Its rate…

Q: Identify the locations of the four ventricles and thestructures that connect them

A: The ventricles are mechanisms that contain and carry cerebrospinal fluid in the cranial cavity. The…

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: What effect does sympathetic stimulation have on stroke volume if thevenous return remains constant?…

A: Most blood vessels, including those in the skin, the digestive tract, and the kidneys, constrict…

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: Which of the following would NOT result from an increase in sympathetic stimulation of the heart?…

A: The heart has muscles that contract rhythmically in order to pump blood throughout the body. The…

Q: Your grandfather was told that his SA node (pacemaker) has stopped functioning. Explain how his…

A: The heart is a muscular organ that pumps blood through the blood vessels of the circulatory system…

Q: answer all questions don't need explanation 1) Multiple answers: Which of the following would cause…

A: MAP is the estimation that explains the typical pulse in an individual's veins during a single…