SEELEY'S ANATOMY+PHYSIOLOGY
12th Edition
ISBN: 9781260172195
Author: VanPutte
Publisher: RENT MCG
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Chapter 29, Problem 12RAC
Summary Introduction
Introduction:
For humans, after fertilization, internal organs begin to develop within 3−8 weeks. Through three means, the germ layers form organs: folds, splits, and condensation.
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Concerning the development of the heart,a. the heart develops from a single tube, which results from the fusionof two tubes.b. the SA node develops in the wall of the sinus venosus.c. the foramen ovale lets blood flow from the right atrium to the leftatrium.d. the bulbus cordis is absorbed into the ventricle.e. All of these are correct.
The ascending aorta and pulmonary trunk develop from the embryonic:- a. bulbus cordis only. b. truncus arteriosus only. c. horns of the sinus venosus. d. conotruncus. e. ventricle
The papillary musclesa. are attached to chordae tendineae.b. are found in the atria.c. contract to close the foramen ovale.d. are attached to the semilunar valves.e. surround the openings of the coronary arteries.
Chapter 29 Solutions
SEELEY'S ANATOMY+PHYSIOLOGY
Ch. 29.1 - Describe the three parts of the prenatal period,...Ch. 29.1 - Distinguish between clinical age and postovulatory...Ch. 29.1 - Prob. 3AYPCh. 29.1 - Prob. 4AYPCh. 29.1 - Prob. 5AYPCh. 29.1 - What events occur during the first week after...Ch. 29.1 - Prob. 7AYPCh. 29.1 - Explain the process of implantation and the...Ch. 29.1 - Prob. 9AYPCh. 29.1 - Prob. 10AYP
Ch. 29.1 - Prob. 11AYPCh. 29.1 - Prob. 12AYPCh. 29.1 - Prob. 13AYPCh. 29.1 - Prob. 14AYPCh. 29.1 - Describe the process involved in forming the face....Ch. 29.1 - Describe the formation of the following major...Ch. 29.1 - Explain the formation of the following endocrine...Ch. 29.1 - Prob. 18AYPCh. 29.1 - Prob. 19AYPCh. 29.1 - Prob. 20AYPCh. 29.1 - Prob. 21AYPCh. 29.1 - Prob. 22AYPCh. 29.2 - Prob. 23AYPCh. 29.2 - Describe the hormonal changes that take place...Ch. 29.3 - What changes occur in the newborn's cardiovascular...Ch. 29.3 - Prob. 26AYPCh. 29.3 - What does the score measure?Ch. 29.3 - What are congenital disorders? What are some...Ch. 29.3 - Prob. 29AYPCh. 29.4 - Which hormones ore involved in preparing the...Ch. 29.4 - Describe the events of milk production and milk...Ch. 29.4 - Prob. 32AYPCh. 29.5 - Prob. 33AYPCh. 29.6 - Prob. 34AYPCh. 29.6 - Prob. 35AYPCh. 29.6 - Prob. 36AYPCh. 29.6 - Prob. 37AYPCh. 29.6 - Prob. 38AYPCh. 29.6 - What role does genetics play in aging?Ch. 29.6 - Prob. 40AYPCh. 29.7 - What is genetics?Ch. 29.7 - Prob. 42AYPCh. 29.7 - What are alleles? If tall (T) plants are dominant...Ch. 29.7 - Prob. 44AYPCh. 29.7 - What are the number and type of chromosomes in the...Ch. 29.7 - Prob. 46AYPCh. 29.7 - Prob. 47AYPCh. 29.7 - Distinguish among complete om nonce, Incomplete...Ch. 29.7 - Prob. 49AYPCh. 29.7 - How are sex-linked traits inherited? Give on...Ch. 29.7 - What is meiosis? How does it differ from mitosis?...Ch. 29.7 - Prob. 52AYPCh. 29.7 - Prob. 53AYPCh. 29.7 - What causes the genetic disorder Down syndrome?Ch. 29 - Prob. 1RACCh. 29 - Given these structure: (1) blastocyst (2) morula...Ch. 29 - Prob. 3RACCh. 29 - Prob. 4RACCh. 29 - Prob. 5RACCh. 29 - Prob. 6RACCh. 29 - Prob. 7RACCh. 29 - Prob. 8RACCh. 29 - Prob. 9RACCh. 29 - Prob. 10RACCh. 29 - Prob. 11RACCh. 29 - Prob. 12RACCh. 29 - Prob. 13RACCh. 29 - Prob. 14RACCh. 29 - Which hormones cause differentiation of sex organs...Ch. 29 - Prob. 16RACCh. 29 - Prob. 17RACCh. 29 - Prob. 18RACCh. 29 - Prob. 19RACCh. 29 - Prob. 20RACCh. 29 - Prob. 21RACCh. 29 - Which of these terms is correctly matched with its...Ch. 29 - Prob. 23RACCh. 29 - Prob. 24RACCh. 29 - Prob. 25RACCh. 29 - Prob. 1CTCh. 29 - A physician tells a woman that she is pregnant and...Ch. 29 - Prob. 3CTCh. 29 - Prob. 4CTCh. 29 - Prob. 5CTCh. 29 - Prob. 6CTCh. 29 - Prob. 7CTCh. 29 - Prob. 8CTCh. 29 - Prob. 9CTCh. 29 - Prob. 10CT
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- While the semilunar valves are open during a normal cardiac cycle, thepressure in the left ventricle isa. higher than the pressure in the aorta.b. lower than the pressure in the aorta.c. the same as the pressure in the left atrium.d. lower than the pressure in the left atrium.arrow_forwardWhich of the following statement/s is/are not true regarding phases of cardiac cycle? A. Atrial systole is followed by ventricular systole. B. When the ventricles are in systole, the atria are in diastole. C. The atria continually receive blood from the veins. D. As pressure within the atria increases, the mitral valve is opened. E. All statements are true.arrow_forwardThe “lubb” sound (first heart sound) is caused by thea. closing of the AV valves.b. closing of the semilunar valves.c. blood rushing out of the ventricles.d. filling of the ventricles.e. ventricular contraction.arrow_forward
- The systemic circulation ends at the: A.right atrium B. right ventricle C. left atrium D. left ventricle The period of ejection: A. begins with the first heart sound and ends with the opening of the AV-valve. B. begins with the second heart sound and ends with the closing of the AV-valve. C. begins with the second heart sound and ends with the opening of the Aortic-valve. D. begins with the opening of the Aortic-valve and ends with the second heart sound. The arterial p02 is relatively low in an individual suffering from congestive heart failur because: A. hemoglobin is mis-shapen and can't bind adequate 02 B. pulmonary ventilation is compromised by the decrease in arterial pCO2 bronchoconstriction increases the total amount of air in the alveoli 02 has difficulty diffusing through the fluid trapped in the lung tissue he volume of blood ejected by the heart per minute is termed: stroke volume cardiac output end diastolic volume end systolic volume ght and Left Ventricular Pressures are…arrow_forwardentricular contraction begins at the Select one: a. AV bundle. b. apex of the heart. c. top of the ventricles. d. superior portion of the interventricular septum. e. base of the heart.arrow_forwardDuring the ventricular ejection phase of the normal human cardiac cycle, one option is correct: a. ejection takes less time than filling, in a resting human. b. the left ventricle diameter increases and the ventricle elongates from base to apex. c. papillary muscles close the atrioventricular valves. d. the chordae tendineae are relaxed. e. the apex beat is best felt in the anterior axillary line, fifth intercostal space.arrow_forward
- Blood flows neither into nor out of the ventricles duringa. the period of isovolumetric contraction.b. the period of isovolumetric relaxation.c. diastole.d. systole.e. Both a and b are correct.arrow_forwardWhich primitive area of the heart will give rise to theright ventricle?a. bulbus cordisb. primitive ventriclec. sinus venosusd. truncus arteriosusarrow_forwardConduction of a neural signal through the walls of the ventricles of the heart is accomplished along: A. Interatrial Fibers B. The sinoatrial node C. The AV bundle D. The purkinje fibersarrow_forward
- Which of the following statements is true about the SA (sinoatrial) node? a. The action potential created by the pacemaker cells of the SA node directly stimulates the contractile cells of both the atria and ventricles. b. The rate of spontaneous depolarization of nodal cells is the fastest in the SA node. c. Pacemaker cells in the SA node form a pathway between the SA and AV nodes. d. The pacemaker cells, which establish the heart rate, are located only in the SA node.arrow_forwardWhen the ventricles contract, all of the following occur excepta. closing of the AV valves.b. blood ejecting into the pulmonary trunk and aorta.c. closing of the semilunar valves.d. opening of the semilunar valves.arrow_forwardJust after the dicrotic notch on the aortic pressure curvea. the pressure in the aorta is greater than the pressure in the left ventricle.b. the pressure in the left ventricle is greater than the pressure in the aorta.c. the pressure in the left atrium is greater than the pressure in the leftventricle.d. the pressure in the left atrium is greater than the pressure in the aorta.e. blood pressure in the aorta is 0 mm Hg.arrow_forward
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