A man was rushed to the ER when he complained of a constant pain down his left shoulder. The attending doctor said that he might be having a heart attack. How do you think the doctor reached this conclusion?

Q: Why do both ventricles have to have the same volume?

A: The term stroke volume will apply to every of the 2 ventricles of the center, though it always…

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: What are the mechanisms that assist in returning venous blood to the heart?

A: The most important transport liquid in the human body is blood. This is circulated from heart to…

Q: if the impulse is coming inferiorly from the SA node then how do the ventricles contract inferior to…

A: Sino atrial (SA) node is a pacemaker in the heart responsible for generation of action potential.…

Q: Where are the autorhythmic cells located/ List its function?

A: 1. Pacemaker Potential• An Autorhythmic cell has the unique ability to depolarize spontaneously,…

Q: How does the heart avoid exhaustion?

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

Q: how does left side heart failure affect pulmonary blood pressure, cardiac output and systemic blood…

A: The left side of the heart receives the oxygenated blood from the lungs and pumps it to the entire…

Q: How does the heart work?

A: All the cells in the body require oxygen for cellular respiration in order to generate energy and to…

Q: What causes an increase in heart rate?

A: Heart rate/Heart pulse It is the speed of the heart beat measured by the number of pounding of the…

Q: Does a change in body position from supine to standing cause a change in pulse?

A: The hydrostatic pressure exerted against the walls of blood vessels by blood flow is known as Blood…

Q: What effect does sympathetic stimulation have on the heart?

A: The sympathetic nervous system is responsible for stimulating the vasoconstriction of blood vessels.…

Q: What happens when Heart rate Increases?

A: The heart is a well defined that they are been stated to term a muscular organ that is part of the…

Q: How does a stroke differ from a transient ischemic attack? Which of these bears closer resemblance…

A: Body cells need oxygen and nutrient to grow, develop, divide, and function.

Q: How does a blockage in a coronary artery cause a heart attack? What kind of dietary and lifestyle…

A: Coronary arteries are arteries that supply oxygen-rich blood and essential nutrients to the heart…

Q: Of the choices, what does the axillary nerve do?

A: The axillary nerve is the mixed nerve containing motor and sensory branches. It is found inferior to…

Q: Which nerves of the body carry ANS fibers that innervate the SA and AV nodes of the heart? Which of…

A: The sympathetic nervous system of body prepares the body for stressful conditions while the…

Q: How is an AVM different from an aneurysm?

A: Arteriovenous malformation (AVM) in the brain arises due to the tangling of blood vessels which…

Q: Which region of the heart is innervated by the sympathetic division but not by the parasympathetic…

A: Heart is the vital part of the body that help in the circulation of blood, oxygen and nutrients…

Q: From what sources does blood flow into the upper and lower chambers of the heart? What are the…

A: Heart pumps blood through a system of blood vessels, called the circulatory system. The heart is a…

Q: You have to stand in front of the class to give a report. You are nervous, and your heart is…

A: The Electrocardiogram (ECG) is a record of the myocardial electric changes. It is a graphical…

Q: What effect will an increase in parasympathetic activity have on heart rate, force of contraction,…

A: The  Autonomic nervous system (ANS) has two interacting systems: the sympathetic and parasympathetic…

Q: Why might exercising on a very hot day result in fainting?

A: Exercise-related heat exhaustion is a form of heat exhaustion induced by physical activity. It…

Q: Which layer of the heart is affected in endocarditis?

A: The human heart has four chambers within it. These four chambers are the Right and Left atria and…

Q: Into which veins in the neck does all venous blood in the brain drain?

A: BASIC INFORMATION NERVOUS SYSTEM :- It is of two types namely Central nervous system (CNS) and…

Q: What is pain in chest due to heart attack called?

A: A human heart is 4 chambered mascular organ. Its present inside chest and its similar to a fist in…

Q: Fill in the blank:  Parasympathetic nerve fibers that supply the heart make up part of the…

A: According to the body requirements, the heart pumps blood that is variable in volume. During the…

Q: how does bending the body forward affects resting heart rates?

A: This rate can vary marginally with body position changes. Most notably, when you go from leaning…

Q: what is the major anatomy examines changes to the heart as a result of heart disease ?

A: The human heart is made up of 4 chambers: 2 Atria and two ventricles. The four chambers help pump…

Q: What is the significance of atrio-ventricular node and atrio-ventricular bundle in the functioning…

A: Introduction Significance of atrioventricular node and atrioventricular bundle in the functioning of…

Q: Which areas of the brain are supplied by the PCA (posterior cerebral artery)?

A: POSTERIOR CEREBRAL ARTERY:-  The cerebral arteries have three main pairs of arteries:- 1) Anterior…

Q: What kind of catabolism occurs in the heart?

A: The heart pumps blood through a system of blood vessels, called the circulatory system. The heart…

Q: How should a patient with left-sided heart failure bepositioned in a reclining chair or bed for…

A: The human heart has four chambers within it. These four chambers are the Right and Left atria and…

Q: In the emergency room a woman, age 40, is complaining of a sharp pain between her shoulder blades on…

A: A shoulder blade also called a scapula is a triangular-shaped bone that is present at the upper back…

Q: how does the delay of the impulse at the atrioventricular node contrribute to cardiac function?

A: The AV node serves as an electrical relay station, slowing the electrical current sent by the…

Q: Why do ventricles have thicker walls than atria?

A: This question is based on the thickness of ventricles and atria.

Q: How is heart failure different from heart attack?

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

Q: Define the term sinoatrial node?

A: Introduction: The cardiovascular system, also referred to as the circulatory system, is one of the…

Q: How can rheumatic fever affect the functioning of the heart?

A: Rheumatic fever is an acute systemic inflammatory condition. The primary cause of rheumatic fever is…

Q: What effect will an increase in sympathetic activity have on heart rate, force of contraction, and…

A: The heart pumps oxygenated blood to the different parts of the body and carries deoxygenated blood…

Q: why do the ventricles contract inferior to superior?

A: The heart is an organ responsible for pumping blood through the blood vessels into the body by using…

Q: What is the significance of the difference in thickness of the ventricular walls?

A: The ventricle is one of the two large chambers towards the bottom of the heart that collects and…

Q: what is a heart murmur and what is its clinical significance?

A: The normal flow of blood through the valves of the heart makes the sound lub-dub. With a murmur, the…