? Which one is true For few seconds the blood supplies CO2 to cells and picks up 02. For few mints the blood supplies 02 to cells and picks up CO2. For few seconds the blood supplies 02 to cells and picks up CO2. The blood is pumped by contraction of the heart muscle None From left ventricle at pressure of 125 mmHg and finally into very fine meshwork. From right ventricle at pressure of 125 mmHg and finally into very fine

? Which one is true For few seconds the blood supplies CO2 to cells and picks up 02. For few mints the blood supplies 02 to cells and picks up CO2. For few seconds the blood supplies 02 to cells and picks up CO2. The blood is pumped by contraction of the heart muscle None From left ventricle at pressure of 125 mmHg and finally into very fine meshwork. From right ventricle at pressure of 125 mmHg and finally into very fine

Human Biology (MindTap Course List)

11th Edition

ISBN:9781305112100

Author:Cecie Starr, Beverly McMillan

Publisher:Cecie Starr, Beverly McMillan

Chapter7: Circulation: The Heart And Blood Vessels

Section: Chapter Questions

Problem 3SQ

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Similar questions

Assume your heart rate is 70 beats per minute (bpm), and eachminute your heart pumps 5.25 l of blood to your body. Based onyour age to the nearest day, about how many times has your heartbeat so far, and what volume of blood has it pumped?
The human circulatory system isclosed—that is, the blood pumped out of the left ventricle of the heartinto the arteries is constrained to a series of continuous, branching vesselsas it passes through the capillaries and then into the veins as it returnsto the heart. The blood in each of the heart’s four chambers comesbriefly to rest before it is ejected by contraction of the heart muscle. The velocity of blood in the aorta can be measured directly with ultrasound techniques. A typical graph of blood velocity versus time during a single heartbeat is shown in Fig. . Which statement is the best interpretation of this graph? (a) The blood flow changes direction at about 0.25 s; (b) the speed of the blood flow begins to decrease at about 0.10 s; (c) the acceleration of the blood is greatest in magnitude at about 0.25 s; (d) the acceleration of the blood is greatest in magnitude at about 0.10 s.
Which of the following is unique to cardiac musclecells?a. Only cardiac muscle contains a sarcoplasmicreticulum.b. Only cardiac muscle has gap junctions.c. Only cardiac muscle is capable ofautorhythmicityd. Only cardiac muscle has a high concentration ofmitochondria.
Which component of the heart conduction systemwould have the slowest rate of firing?a. atrioventricular nodeb. atrioventricular bundlec. bundle branchesd. Purkinje fibers
The advantage of having a heart with two atria is that a) oxygenated and deoxygenated blood are separatedb) blood is pumped directly from heart to tissuesc) blood can be slowed down before going to tissuesd) the body can support a higher blood pressuree) there are two muscular regions for pumping
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?
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.
Watch this video (http://openstaxcollege.org/l/dynamicfluid) to see an explanation of the dynamics of fluid in the bodys compartments. What happens in tissues when capillary blood pressure is less than osmotic pressure?
Listen to this CDC podcast (http://openstaxcollege.org/l/CDCpodcast) to learn about hypertension, often described as a silent killer. What steps can you take to reduce your risk of a heart attack or stroke?
If cardiac output is 16L/min during jogging, and 25% of total blood flow is being diverted to skeletal muscle, how much blood is being delivered to skeletal muscle in L/min? a. 2 b. 5 c. 6 d. 1 e. 4 f. 3
If oxygen consumption rate increases 8x, how much do you think the cardiac output will increase?
In the figure below on the left, label the P, QRS and T waves. Describe what is happening in the heart in the P wave: Relate the P wave to the cardiac cycle:o Is the heart in systole or diastole?o Is the pressure high or low?o Where is blood flowing? Which valves are open? closed? o Which muscle fibers are contracting, if any?