Describe how the four chambers of the fish heart function and the principal limitation of this design.

Q: Draw a well labelled diagram of heart and state some functions of heart.

A: A heart is a hollow and muscular organ, which is located under the breastbone in the chest cavity.…

Q: Explain why an incompetent valve reduces the efficiencyof the heart contraction.

A: The organ of the mesodermal origin-the heart is primarily accountable for blood pumping. Repeated…

Q: Estimate the ejection fraction of the failing heart at a typical normal end-diastolic volume?

A: Ejection fraction estimation - It is the measurement of the amount of blood pump from left ventricle…

Q: Describe the spread of excitation from the SA node through the restof the heart?

A: In the mammalian heart, the heartbeat originated from the cardiac muscles. The heartbeat originated…

Q: Summarize the effects of the autonomic nervous system on the heart.

A: The functioning of heart is controlled by Autonomic nervous system in many ways

Q: Relate the timing of heart sounds to the ECG waves and pressure changes during systole and diastole.

A: ECG stands for Electrocardiogram. It is the graphical representation of the conduction system and…

Q: Describe the pressure changes in the atria and ventriclesduring a cardiac cycle.

A: The heart is an organ found in animals which is specialised to pump blood in the body. The heart is…

Q: Give biological reason for the following: the wall of the ventricle is thicker than that of auricle.

A: Heart is the main organ of circulatory system of the body. It is made up of four chambers. Chambers…

Q: Describe the pathway of electrical conduction of the heart, starting with the SA node. How does…

A: In the heart, the contraction of the heart muscle is promoted by the electrical conduction system…

Q: What is the advantage of four chambered of heart?

A: The heart is a muscular organ in most animals, which pumps blood through the blood vessels of the…

Q: 24.5. Describe using diagrams as appropriate the cardiac cycle.

A: Circulatory system is crucial for normal functioning of body tissues and  vital organs for survival…

Q: Discuss how the SA and AV nodes control the contractionsof the heart muscle, as well as how these…

A: A network of specialized muscle cells is present in the walls of the heart. These muscle cells are…

Q: Describe two mechanisms by which the cardiac output of an animal’s heart can be adjusted and…

A: In animals, Cardiac output can be increases by the more blood flow in ventricle and forcefully…

Q: How many chambered heart does fish have?

A: Circulatory system is the system, that helps in the circulation of substances through body fluids.…

Q: Describe the Flank-Starling law in the heart.

A:

Q: Describe the mechanisms that increase the cardiac output during exercise and that increase the rate…

A: When a person is exercising there are various circulatory changes that occur in his/her body. The…

Q: Describe the anatomy of movement of the wave of cell depolarization throughout the heart during the…

A: The cardiac cycle:It is comprised of a whole relaxation and contraction of both the atrium and…

Q: explain the cardiac cycle and how electrical impulses are conducted through the human heart?

A: The heart is a muscular organ and is about the size of a fist. It is located behind the breast bone.…

Q: Relate the opening and closing of specific heart valves in each phase of the cardiac cycle to…

A: The highly coordinated sequence of electrical, mechanical, and vascular events constitutes the…

Q: Describe the structure of the heart of a mammal

A: The heart is a hollow muscular organ that pumps the blood through the circulatory system by rhythmic…

Q: Study the diagram below to identify the pressure relationships which are present during VENTRICULAR…

A: During first part of ejection ventricular pressure rises blood is intensively ejected to the…

Q: Trace the flow of blood through a mammalian heart, naming the four chambers and their valves, and…

A: The heart is the most important organ in the body. It is made up of several different types of…

Q: Explain why the SA node normally paces the heart.

A: In human heart, small groups of specialised neuromuscular cells are present within the myocardium.…

Q: Create a flow diagram for this cardiovascular system that has these elements in correct order • Vena…

A: Introduction  The circulatory system (cardiovascular system) transports oxygen-rich blood from the…

Q: 221 Name the valves that separate the atria from the ventricles 23) Where are the semilunar valves…

A: Introduction The heart is a muscular organ the size of a fist that is found directly behind and…

Q: Explain the Frank-Starling law of the heart

A: The heart receives the blood through atrial chambers and it pumps down to the ventricles and thereby…

Q: Describe the actions of the frog heart chambers during a cardiac cycle.

A: The heart is a muscular pumping organ that passes deoxygenated blood to the pulmonary organ and…

Q: Describe the structure of pigeon's heart?

A: The birds have a high rate of metabolism and well regulated body temperature. They have an efficient…

Q: How many chambers doesthe fish heart have?

A: The system which is primarily meant for the circulation of substances through body fluids is called…

Q: Predict the pressure changes that occur in the aorta, the left ventricle,and the left atrium after…

A: The heart is a smooth muscle organ that plays a major role in the circulation of blood. Human heart…

Q: Explain the pathway of the conductions system in the Heart?don't copy from google

A: The cardiovascular system of the humans consists of organs like heart and blood vessels. The primary…

Q: Describe the position and attachments of the parietal pericardium of the heart of the fetal pig.

A: Pericardium or the pericardial sac is the double-walled sac that encloses the heart and the roots of…

Q: Label the internal structures of the frog's heart.

A: Amphibian such as frogs has three chambered heart with 2 auricles and 1 ventricle.

Q: A heart ventricle partially divided by an incomplete septum is found in frogs snakes birds and…

A:

Q: Y Identify structure X. Explain the function of structure Y. Explain how the structure of the heart…

A: Since you have posted a question with multiple sub-parts, we will solve the first three sub-parts…

Q: Why does heart rate and contraction force change relative to resting values when the frog's heart…

A: The heart of the frog has three chambers, one ventricle, and two atria. Because there is only a…

Q: draw and label parts of the human heart

A: Human heart is a pumping organ of the body that circulates the blood through the body. It has the…

Q: Blood returning to the mammalian heart in a pulmonary veindrains first into the(A) left atrium.(B)…

A: The mammalian heart is a four-chambered muscular organ, which pumps blood to the body. The heart is…

Q: Describe two advantages of a 4-chambered heart.

A: In higher level organisms the heart is made up of 4 chambers.

Q: Compare and contrast the structure and function of the two types of heart valves.

A: Introduction:  Heart valves- These are flap( leaflet) like structures which prevent backflow of…

Q: Explain the mechanism of the contractions of the heart and how it is regulated?

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

Q: Do fishes present an openor closed circulatory system?How many chambers does afish heart have? How…

A: Introduction: Fish belongs to  Pisces class of Phylum Chordata. It has a skin with scales covering…

Q: pumping chambe

A: Mammalian heart is made up of two atria and two ventricles. Left Atria receive oxygenated blood from…