Answered: - Discuss the flow of blood in a human…

- Discuss the flow of blood in a human body. Use the left ventricle as a starting point and ensure to make mention of all major structures in the heart.

Body Structures & Functions Updated

13th Edition

ISBN:9780357191606

Author:Scott

Publisher:Scott

Chapter13: Heart

Section: Chapter Questions

Problem 1L

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Visit this site (http://openstaxcollege.org/l/heartvalve) to observe an echocardiogram of actual heart valves opening and closing. Although much of the heart has been removed from this gif loop so the chordae tendineae are not visible, why is their presence more critical for the atrioventricular valves (tricuspid and mitral) than the semilunar (aortic and pulmonary) valves?
Label the hearts main parts in the diagram below.
A characteristic of blood circulation through or to the heart is that: a. the superior vena cava conveys blood to the head. b. the inferior vena cava conveys blood to the right atrium. c. the pulmonary arteries convey blood from the lungs to theleft atrium. d. the pulmonary veins convey blood into the left ventricle. e. the aorta branches into two coronary arteries that conveyblood from heart muscle.
The ________ layer secretes chemicals that help to regulate ionic environments and strength of contraction and serve as powerful vasoconstrictors. pericardial sac endocardium myocardium epicardium
List the functions of the cardiovascular system.
Which of the following lists the valves in the order through which the blood flows from the vena cava through the heart? tricuspid, pulmonary semilunar, bicuspid, aortic semilunar mitral, pulmonary semilunar, bicuspid, aortic semilunar aortic semilunar, pulmonary semilunar, tricuspid, bicuspid bicuspid, aortic semilunar, tricuspid, pulmonary semilunar
Characteristics of veins and venules are: a. thick walls. b. large muscle mass in the walls. c. a large quantity of elastin in the walls. d. low blood volume compared with arteries. e. one-way valves to prevent backflow of blood.
Match the terms with their descriptions. ____capillary a. filters out pathogens ____lymph node b. cardiac pacemaker ____atrium c. blood vessel with valves ____ventricle d. largest artery ____SA node e. receives blood from veins ____vein f. exchange site ____aorta g. receives blood from atrium
State the main functions of venules and veins. What forces work together in returning venous blood to the heart?
The heartbeat includes: a. the systole when the heart relaxes and fills. b. the diastole when the heart contracts and empties. c. pressure that causes the AV valves to open, filling the ventricles. d. rising pressure in the ventricles to open the AV valves and close the SL valves. e. the lub sound when the SL valves open and the dub sound when the AV valves close.
High blood pressure would be a result of ___________ . a high cardiac output and high peripheral resistance a high cardiac output and low peripheral resistance a low cardiac output and high peripheral resistance a low cardiac output and low peripheral resistance
Figure 40.11 Which of the following statements about the heart is false? The mitral valve separates the left ventricle from the left atrium. Blood travels through the bicuspid valve to the left atrium. Both the aortic and the pulmonary valves are semilunar valves. The mitral valve is an atrioventricular valve.