38. All blood cells are produced in the A. red bone marrow. B. yellow bone marrow. C. white bone marrow. ____ 39. The heart muscle itself receives its blood supply from the A. coronary artery. B. aorta. C. inferior vena cava.

Q: Mac is 13 and has fallen deeply in love with his first sweetheart.  He feels his heart “skip a beat”…

A: The mammalian heart is a complex structure divided into four different chambers, namely the left…

Q: Within the T-P interval of the EKG... a. The 2nd heart sound is heard b. the semilunar valves are…

A: a. The 2nd heart sound is heard

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A: Neurotransmitter and target receptor combinations in the areas of the heart are as follows: SA…

Q: For questions #10-20, match each term to its definition. _____ . Vein…

A: Heart is defined as the hollow muscular organ which is composed of several layers of cardiac muscles…

Q: When cardiac muscle tissue dies in adults, it is replaced with scar tissue composed of dense…

A: When a person has a heart attack, the lack of oxygen causes part of the tissue to be damaged. The…

Q: why are cardiac muscle cells affected by hyperkalemia? A. All choices below are correct B. Resting…

A: Hyperkalemia is the medical condition which arises from increased levels of Potassium in the blood.…

Q: Which of the following conditions might result in the back flow of blood through a weakened mitral…

A: a. High pressure in the left ventricle, low pressure in the left atrium

Q: This diagram shows a _______ and the green things being released into the space are _____. A.…

A: The branch of biology associated with studying the functions of living organisms’ body can be…

Q: Figure 16.10 Which of the following statements about the circulatory system is false?a. Blood in the…

A: The body tissues get blood via various blood vessels. Two closed systems of tubes are made by them,…

Q: a. Ventricular diastole b. Throughout the cardiac cycle c. Between cardiac cycles  d. Ventricular…

A: Heart It is the main component of the circulatory system. It pumps the blood to various parts of the…

Q: All of the followings are correct, except ---------------------. A. The mean blood pressure…

A: Blood is the fluid that transports oxygen and nutrients to the cells and carries away carbon dioxide…

Q: The innermost serous membrane attached to the heart muscle is called the: a. visceral pericardium.…

A: The serous membrane can be defined as the type of membrane which covers the internal cavity. It is a…

Q: 26. Surgically providing a detour to allow blood to flow around a blocked coronary artery is a A.…

A: A coronary artery Bypass surgery is done when a coronary artery is occluded, and it establishes a…

Q: Which of the following is true about the pacemaker potential in the heart? a. Decreased K+ efflux…

A: The pacemaker potential, also known as the prepotential, is the slow, positive increase in voltage…

Q: which of the following factors will increase the cardiac output? a. decreased heart rateb. increased…

A: The objective of the question is to identify the factors that can increase the cardiac output.…

Q: All of the following are true of the anatomy of the heart except A. The epicardium has a serous…

A: The heart is a muscular organ that pumps oxygenated blood to the aorta, which conveys it to the…

Q: Which of the following is true regarding the conduction of electrical activity in the heart? Choose…

A: The objective of the question is to identify the correct statement about the conduction of…

Q: It is generally accepted that a relatively low diastolic vascular pressure is more important than a…

A: Introduction The pressure of circulating blood against the walls of blood arteries is known as blood…

Q: The only area of the heart that receives innervation from the brain is called the: A.…

A: Cranial nerves are the part of the nervous system that assists in a variety of functions. These…

Q: Which is not true about our heart A. ventricular systole squeezes blood to the lungs and the body B.…

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Q: Blood flows through the vessels references in the above image during:

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Q: Age-related changes in the heart’s electrical conduction system such as fibrosis and loss of…

A: The term "electrical conduction system" describes the network of specific cells and tissues in the…

Q: 30. The outer cell layer of the capillaries is primarily composed of: A. Pericytes B. Vascular…

A: The correct option is C Endothelial cells  The interchange of material between circulation and cells…

Q: A patient has been in a serious car accident and is hemorrhaging. Which of the following changes…

A: The heart is a muscular, mesodermally derived organ. It pumps the blood and circulates it in the…

Q: which of the following is TRUE for a cardiac cycle?    a. it only includes pressure changes that…

A: The cardiac cycle is the mechanism performed by the heart from the commencement of one heartbeat to…

Q: Which of the following is/are true concerning the opening and closing of the cardiac valves? A.…

A: Backward blood flow is prevented by the valves. On each end of the two ventricles are flaps that act…

Q: If somebody was doping on EPO and you analyzed a sample of their blood you would likely find: A.…

A: Blood is a fluid in the body that transports oxygen and nutrients to all tissues in the body to…

Q: a calcium channel blocker or an antagonist drug will produce a. vasoconstriction b. increase in…

A: Introduction: Arterial blood pressure is the pressure of the column of blood present in the arterial…

Q: Select one: a. right atrium b.

A: The heart is divided into two parts, each part containing a atrium and a ventricle. The four…

Q: myocardial infarction? A. White cells are attracted to the site of muscle injury B. Injured fibers…

A: Cardiac Enzymes: Cardiac enzymes are proteins that are released into the bloodstream when the heart…