The heart has three layers the outermost of which is called the ___

Q: Which part of the heart is responsible for initiating and maintainingthe rhythmic activity of the…

A: The heart is a muscular organ that pumps blood throughout the body. It is located in the middle…

Q: The second heart sound ("dub") results from vibrations generated by the A. closing of the AV valves…

A: A normal heartbeat consists of two sounds- LUB and DUB. These sounds often occur as pairs in a…

Q: In the sheep's heart, the right atrium is _______ to the right ventricle.

A: Heart.  It is a muscular organ that pump the blood to different part of the body.

Q: One cell-thick vessels are called:         I.   Arteries       II.   Veins      III.   Capillaries…

A: Blood vessels are the components of the circulatory system, which are essential for transporting…

Q: Which blood vessel carries blood back to the heart

A: Blood flow continuously in our body through blood vessels. Blood carries oxygen and nutrients to the…

Q: The ascending aorta and pulmonary trunk develop from the embryonic:- a. bulbus cordis only. b.…

A: Ascending aorta refers to the part of the aorta that begins at the upper region of the left…

Q: Choose the best answer Blood moving from the left atrium to the left ventricle passesthrough which…

A: Heart is the main organ pumping blood. Heart is myogenic meaning it is capable of auto excitation.…

Q: Which of the following is NOT a population of pacemaker cells in the heart? a. papillary muscles b.…

A: D) purkinje fibre system

Q: Sino-atrial node is called the pacemaker of our heart. Why?

A: The SA (sino-atrial) node is a neuron’s specialized bundle that is located in the upper part of…

Q: The Heart is Four -19 amber muscular organ

A: Ans: Yes, The heart is 4 chamber muscular organ.

Q: Which row shows the chambers of the heart, from those with the thickest walls to those with the…

A: The human heart has two atrium which are separated by the interatrial septum from each other. There…

Q: Choose the best answer Which of the following lists the events of the cardiac cycle in thecorrect…

A: The cardiac cycle comprises of the phases of heart activities through a complete heartbeat, that is,…

Q: One of heart characteristics that each cell has ability to conduct impulses to the next cell. (Use…

A: Heart is central pumping part body

Q: uestions. Which structure is labelled "J"? Aorta • Black arrows indicate direction of blood flow…

A:

Q: The lower chambers of the heart that contract to push blood out of the heart are called ___.

A: Heart is a muscular organ that pumps blood throughout the body.

Q: The ___ valves are positioned between the ventricles and blood vessels.

A: Heart valves run in one direction because it prevents the backflow of blood and blood flows in a…

Q: Explain about the following picture, which represents the heart

A: The given picture is a Histology slide of a Cardiac muscle.

Q: The two tubes that eventually fuse to form the heart arereferred to as the ________. a. primitive…

A: Gastrulation refers to the procedure by which cells of the blastula get recognized to produce the…

Q: The upper chambers of the heart that receive blood are called ___.

A: The cardiovascular system of the human body is made up of the heart, blood, and blood vessels that…

Q: The heart layer the lines the chambers is called the ___.

A: Question- The heart layer the lines the chambers is called the ___.

Q: You are a red blood cell on your way to the second metatarsal from the left ventricle of the heart.…

A: "Blood" is a fluid present in humans and animals that aid in transporting essential substances like…

Q: What activities of heart are controlled by sympathetic system and parasympathetic system.

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

Q: The image above shows the change in blood volume in the left ventricle through time. Identify what…

A: Answer: CARDIAC CYCLE = This is the cycle in human system which involves the conversion of…

Q: the upper chambers (rooms) pf the heart are known as

A: The heart is the vital organ of the body, located in the middle and front of the chest and slightly…

Q: Complete the process of the blood flow through the heart by filling in the missing terms in the…

A: The heart is responsible for transporting blood throughout the body. The arteries are responsible…

Q: Aperson needs bypass surgery to avoid a heart attack. Which one of her vessels is most likely to be…

A: A heart attack is a life-threatening condition that requires immediate medical attention. A blood…

Q: The heart is within the

A: The muscular organ called the heart is responsible for transporting blood to the various body…

Q: The upper chambers of the heart are the: A) capillariesB) atriumsC) aortasD) ventricles

A: The organ system is the group of organs that functions together to maintain the biological system of…

Q: Identify the bundle of His O under the left ventricles O between the right and left ventricles of…

A: "The bundle of His" is an important part of the electrical conduction system of the heart. It…

Q: The normal pacemaker of the heart is the ______.   A sinoatrial node   B left atrium   C…

A: Heart is an important organ that pumps blood. Heart is myogenic in nature meaning it is capable of…

Q: MAKE A DRAWING OF THE HEART LABEL ALL THE CORRECT STRUCTURES AND EXPLAIN HOW THE BLOOD FLOWS THROUGH…

A: Blood is the fluid that carries nutrients, respiratory gases, metabolites and other metabolic wastes…

Q: The main pacemaker area of the heart is the: O Bundle branches O AV node SA node Purkinje fibers

A: Given: The heart is a muscular organ which is as big as our fist.It is located between the lungs in…

Q: Concept diagram. Trace the flow of blood through the heart. Fill in the diagram using the terms in…

A: The heart is the major pumping organ and it starts to beat at about 22 days after conception. It has…

Q: are True/False. The louder, sharper, higher-pitched 'dupp' heart sound occurs when tricuspid and…

A: The louder , sharper , higher-pitched 'dupp' heart sound occurs when tricuspid and mitral valve…

Q: Which of the following could increase a person’s risk of a heart attack? Group of answer choices…

A: A heart attack is also known as myocardial infarction. It occurs due to the blockage of blood flow…

Q: Which of the following arrythmias is characterized by extremely fast but coordinated contractions?…

A: Arrhythmia is the condition referring to irregular heartbeats or alterations in the heartbeat. Most…

Q: area of dead myocardial tissue is called.....

A: The cardiac muscle is especially created of 2 forms of cells: cardiomyocytes and fibroblasts.…

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

A:

Q: The atrioventricular valve on the same side of the heart as the origin of the aorta is the _____…

A: ATRIOVENTRICULAR VALVE It is the valve present between atrium and ventricle. It allows the flow of…

Q: Blood flows from the superior vena cava right into the right atrium of the heart. TRUE OR FALSE

A: Superior vena cava brings deoxygenated blood from the upper part of the body.

Q: The apex is at the inferior end of the heart. TRUE OR FALSE

A: The apex is the blunt end present below the ventricles. it is the inferior or bottom part of the…

Q: If the AV node was damaged, the parts of the heart that would fail to contract are (the) O a. right…

A: The cardiovascular system is a network of arteries and veins in which the heart pumps blood. One of…

Q: How important resistance is in heart function? Please give an example.

A: Introduction:  Peripheral vascular resistance (systemic vascular resistance, (SVR) is the resistance…

Q: he names and synonyms for es of the heart.

A: We know that the heart is a muscular pumping organ that pump the originated blood throughout the…

Q: What part of the heart act as a shock absorber

A: The muscular organ that pumps blood via the distribution vessels of the circulatory system is known…

Q: Complete the following statements: The membrane on the surface of the heart is called the…

A: Heart is the muscular organ, whose chief function is to pump and circulate oxygenated blood that…

Q: Why is the left ventricle more muscular than the right ventricle (in heart)? Please write very…

A: Heart is one of the vital organs of the body which is responsible for pumping blood to different…

Q: The heart's pacemaker is the O a. atrioventricular node O b. bicuspid node O c. sinoatrial node O d.…

A: A cardiac pacemaker is a medical device that sends electrical impulses to the heart muscle chambers…