20. Which of the following is the most (largest) muscular chamber in a bird's heart or a mammal heart? a. right atrium b. left atrium c. right ventricle d. left ventricle e. all are equality muscular 21. Materials are exchanged between the blood and the surrounding tissues in the a. arteries b. veins d. all of the choices e. none of the choices c. capillaries 22. Oxygenated blood leaves the human heart via the a. pulmonary vein b. pulmonary artery d. aorta e. respiratory circuit С. yena caya

Q: Describe how the heart as a muscle does its job of pumping blood. What happens if the cardiac muscle…

A: The heart is primarily composed of cardiac muscle tissue, which contracts rhythmically to pump blood…

Q: What is true of capillaries? A. They have very thick walls. B. They carry deoxygenated blood to the…

A: Body system ( organ system ) is a system which comprises of various organs. Human body comprises of…

Q: 3.During the recycling of components following the normal destruction of erythrocytes, globin is…

A: We know that Hemoglobin is a metalloprotein molecule present in red blood cells. Hemoglobin serves…

Q: 3. Most human cells exist within what are called "tissue- beds"; within a tissue bed, the…

A: The human circulatory system is responsible for the circulation of blood through the body. It is…

Q: 13. What is the function of the atrioventricular node? A. Pass electrical impulses from the atria…

A: The circulation in the heart is accompanied by a series of steps that includes a number of processes…

Q: typical circulatory system consists of   a. a fluid and a series of conduits only.   b. a…

A: Circulatory system is a system in which the nutrients and other materials are circulated throughout…

Q: 18. Which of the following is defined by a normal heart rhythm? A. Atrioventricular node B. Mitral…

A: This cardiac signalling mechanism normally operates smoothly in a healthy heart, resulting in a…

Q: 32. The simplest type of nervous response is A. effector action. B. a stimulus. C. reflex. ____ 33.…

A: A stimulus causes the production of an impulse that is transmitted to the center via the sensory…

Q: 1. What happens when the pressure in the ventricles becomes lower than the pressure in the atria?…

A: Semilunar valves are valves of the heart and the shape of valves prevents the blood to flow back…

Q: 2. What type of blood vessel returns blood to the heart? O A. Artery B. Vein O c. Capillary O D.…

A: ANSWER;- B) Vein Explain;- Veins (in blue) are the blood that returns blood to the heart. Profound…

Q: 7. If your instructor asked you to explain why the myocardium is thicker in the left ventricle than…

A: Heart is the major organ of the cardiovascular system. It is the mesodermally derived organ and it…

Q: 1. The receives oxygen-depleted blood and empties it into the whereas oxygenated blood from the…

A: The heart is a largely muscularized or involuntary (uncontrolled) bodily organ. It has four chambers…

Q: 17. Which is the INCORRECT match between vessel and description?   A. Capillaries; largest total…

A: Venules; blood velocity lower than that of capillaries

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: In a non-innervated heart Preload will increase:     A. Peripheral resistance.   B. Aortic…

A: NON INNERVATED HEART : non innervated heart means when heart is deficient of sympathetic and para…

Q: What vessels carry deoxygenated blood away from the heart? A. Pulmonary artery only B. Coronary…

A: Veins carry deoxygenated blood to the heart and located close to the skin. Arteries carry oxygen…

Q: 5. W hich structure is present in the right ventricle of the sheep's heart, but not in the left…

A: The question asks the structure located in the right ventricle but not in the left ventricle of the…

Q: True or False. Write T if the statement is TRUE. If not, w place the underlined word to make the…

A: I. 1. True. The dome shaped muscle that expands and contracts on breathing is diaphragm. 2. FAlse.…

Q: 25. Blood Volume affects blood pressure because it directly increases:   A.Total Peripheral…

A: The homeostatic mechanisms regulate cardiovascular activity to ensure adequate blood flow,…

Q: Blood flow from the heart through blood vessels to all parts of the body and back to the heart is…

A: Circulation:- The term refers to circulating something. In this question, circulation refers to…

Q: Heart failure occurs when   a. the cardiac output is 15 liters per minute when you are watching…

A: A heart failure means that the heart muscle doesn't actually  pump as much blood as per  body…

Q: Please compare and contrast the anatomy of the heart in a) most reptiles (turtles, snakes, lizards)…

A: Difference between Avian heart and Reptilian heart. S. No. Differential characters Bird's Heart…

Q: 5. Most of the exchange of gases and nutrients between blood and tissues occurs in the __level. A.…

A: The circulatory system is responsible for transporting blood throughout the body. It deliver…

Q: 2. )  when you taking blood pressure one collapes the brachial artery and then reduces presure in…

A: Introduction:- The cardiovascular system is the system responsible for delivering blood to different…

Q: Which of the following is a predicted outcome in a mammal heart that entirely lacks valves?   A.…

A: The circulatory system is one of the most essential systems in the body. The function of the…

Q: 6. ventricles Contraction begins at the __of the heart and squeezes blood from there to the __ A.…

A: The heart beating is accompanied by the pumping of the oxygen and nutrients rich blood to the body.…

Q: 1. You should be able to distinguish two heart sounds.  The first sound is when the ventricle begins…

A: “They are not subparts of a question. Since you have asked multiple questions, we will solve the…

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…

Q: 9. Right and Left Ventricular Pressures are the identical during:   A. the period of ejection B. the…

A: The duration between the start of one heartbeat and the start of next heartbeat is called single…

Q: 0. Segment representing the time heart muscle is electrically silent 18. Waveform representing total…

A: The human heart is an organ that pumps blood through the circulatory system's veins, giving oxygen…