Anatomy & Physiology
1st Edition
ISBN: 9781938168130
Author: Kelly A. Young, James A. Wise, Peter DeSaix, Dean H. Kruse, Brandon Poe, Eddie Johnson, Jody E. Johnson, Oksana Korol, J. Gordon Betts, Mark Womble
Publisher: OpenStax College
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Textbook Question
Chapter 19, Problem 23RQ
Of the three germ layers that give rise to all adult tissues and organs, which gives rise to the heart?
- ectoderm
- endoderm
- mesoderm
- placenta
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Chapter 19 Solutions
Anatomy & Physiology
Ch. 19 - Visit this site...Ch. 19 - Which of the following is not important in...Ch. 19 - Which valve separates the left atrium from the...Ch. 19 - Which of the following lists the valves in the...Ch. 19 - Which chamber initially receives blood from the...Ch. 19 - The ________ layer secretes chemicals that help to...Ch. 19 - The myocardium would be the thickest in the...Ch. 19 - In which septum is it normal to find openings in...Ch. 19 - Which of the following is unique to cardiac muscle...Ch. 19 - The influx of which ion accounts for the plateau...
Ch. 19 - Which portion of the ECG corresponds to...Ch. 19 - Which component of the heart conduction system...Ch. 19 - The cardiac cycle consists of a distinct...Ch. 19 - Most blood enters the ventricle during ________....Ch. 19 - The first heart sound represents which portion of...Ch. 19 - Ventricular relaxation immediately follows...Ch. 19 - The force the heart must overcome to pump blood is...Ch. 19 - The cardiovascular centers are located in which...Ch. 19 - In a healthy young adult, what happens to cardiac...Ch. 19 - What happens to preload when there is venous...Ch. 19 - Which of the following is a positive inotrope? Na+...Ch. 19 - The earliest organ to form and begin function...Ch. 19 - Of the three germ layers that give rise to all...Ch. 19 - The two tubes that eventually fuse to form the...Ch. 19 - Which primitive area of the heart will give rise...Ch. 19 - The pulmonary trunk and aorta are derived from...Ch. 19 - Describe how the valves keep the blood moving in...Ch. 19 - Why is the pressure in the pulmonary circulation...Ch. 19 - Why is the plateau phase so critical to cardiac...Ch. 19 - How does the delay of the impulse at the...Ch. 19 - How do gap junctions and intercalated disks aid...Ch. 19 - Why do the cardiac muscles cells demonstrate...Ch. 19 - Describe one cardiac cycle, beginning with both...Ch. 19 - Why does increasing EDV increase contractility?Ch. 19 - Why is afterload important to cardiac function?Ch. 19 - Why is it so important for the human heart to...Ch. 19 - Describe how the major pumping chambers, the...
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- Blood islands are ________. clusters of blood-filtering cells in the placenta masses of pluripotent stem cells scattered throughout the fetal hone marrow vascular tubes that give rise to the embryonic tubular heart masses of developing blood vessels and formed elements scattered throughout the embryonic discarrow_forwardThe __________ arteries are the blood vessels of the heart, responsible for nutrient and O2 transport to the heart muscles. A part of the endocrine system, the __________ is responsible for producing T-cells in addition to producing hormones involved in controlling metabolism. The ________ diverts oxygen-poor blood away from fetal lungs, helping it to be delivered to the placental border for exchange with the maternal blood supply.arrow_forwardThe mesoderm eventually turns into which of the following substances? O connective tissue gut lining O skin, nervous tissue O bone O A and Darrow_forward
- Draw a schematic diagram of the fetal circulation indication the route of blood flow from the placenta, vice-versa.arrow_forwardA newborn was delivered through normal spontaneous vaginal delivery (NSVD). After the umbilical cord was cut, the number of arteries and vein was checked. You are aware that umbilical vein carries O oxygen and nutrients from the fetus to the placenta O oxygen and nutrients from the placenta to the fetus O metabolic wastes and carbon dioxide from the fetus to the placenta O blood from the navel into the inferior vena cava O metabolic wastes and carbon dioxide from the placenta to the fetus 5 7 8 9. 10 11 12 13 14arrow_forwardWhat anatomical part of the fetus is the best part to hear the fetal heart rate (FHR)? The popliteal The back of the fetus Brachial artery The apical pulse located in the heartarrow_forward
- Examine the diagram of fetal circulation again. Why is the umbilical vein red? Why aren’t the pulmonary veins red like they would be in adult circulation? What is the function of the ductus venosus?arrow_forwardWhich of these statements is correct?a. Fetal circulation, like adult circulation, takes blood equally to apulmonary circuit and a systemic circuit.b. Fetal circulation shunts blood away from the lungs but makesfull use of the systemic circuit.c. Fetal circulation includes an exchange of substances betweenfetal blood and maternal blood at the placenta.d. Unlike adult circulation, fetal blood always carries oxygen-richblood and therefore has no need for the pulmonary circuit.e. Both b and c are correct.arrow_forwardAside from the nervous system, which other organs system develops out of the ectodermarrow_forward
- label the Arrows in the following diagram, which represent the Adult Equivalents of Vascular Structures in the Fetus.arrow_forwardWhat is/are major tissue that develops from ectoderm (select all correct answers)? O Nervous system O Epidermis of skin O Digestive lining Muscles Blood vesselsarrow_forwardThe cell formed after fertisation is called: I. Foetus II. Zygote III. Embryo IV. None of thesearrow_forward
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