
Concept explainers
Which of the following includes only structures enclosed within the mediastinum?
(a) lungs, esophagus, heart
(b) heart, trachea, lungs
(c) esophagus, trachea, thymus
(d) pharynx, thymus, major vessels

Introduction:
The mediastinum refers to the middle section of the thoracic cavity. This region is surrounded by the loose connective tissue and it consists of a group of structures inside the thorax.
Answer to Problem 11RFT
Correct answer:
The mediastinum is present inside the thorax and it is covered on the right and left side by pleurae. It involves a number of organs.
Explanation of Solution
Explanation for the correct answer:
Option (c) is given as esophagus, trachea, and thymus. Mediastinum region comprises organs like the heart and its vessels, esophagus, phrenic, cardiac nerves, lymph nodes, thymus, thoracic duct, and cardiac nerves. Hence, option (c) is correct.
Explanation for incorrect answers:
Option (a) is given as lungs, esophagus, and heart. The lymph nodes of the central chest are included. It consists of all the organs except the lungs. So, it is an incorrect answer.
Option (b) is given heart, trachea, and lungs. All the organs are included in the mediastinum except for the lungs. So, it is an incorrect answer.
Option (d) is given as pharynx, thymus, and major vessels. Mediastinum starts is the middle section of the body and pharynx lies above it. So, it is an incorrect answer.
Hence, options (a), (b), and (d) are incorrect.
Therefore, it can be concluded that mediastinum does not include lungs and consists of all the other organs present in the middle section.
Want to see more full solutions like this?
Chapter 1 Solutions
Human Anatomy (9th Edition)
- can you help? I think its B but not surearrow_forwardSkip to main content close Homework Help is Here – Start Your Trial Now! arrow_forward search SEARCH ASK Human Anatomy & Physiology (11th Edition)BUY Human Anatomy & Physiology (11th Edition) 11th Edition ISBN: 9780134580999 Author: Elaine N. Marieb, Katja N. Hoehn Publisher: PEARSON 1 The Human Body: An Orientation expand_moreChapter 1 : The Human Body: An Orientation Chapter Questions expand_moreSection: Chapter Questions Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,... format_list_bulletedProblem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,... See similar textbooks Bartleby Related Questions Icon Related questions Bartleby Expand Icon bartleby Concept explainers bartleby Question Draw a replication bubble with two replication forks.blue lines are DNA single strands and red lines are RNA single strands.indicate all 3' and 5’ ends on all DNA single…arrow_forwardProvide an answerarrow_forward
- Question 4 1 pts Which of the following would be most helpful for demonstrating alternative splicing for a new organism? ○ its proteome and its transcriptome only its transcriptome only its genome its proteome and its genomearrow_forwardIf the metabolic scenario stated with 100 mM of a sucrose solution, how much ATP would be made then during fermentation?arrow_forwardWhat is agricuarrow_forward
- When using the concept of "a calorie in is equal to a calorie out" how important is the quality of the calories?arrow_forwardWhat did the Cre-lox system used in the Kikuchi et al. 2010 heart regeneration experiment allow researchers to investigate? What was the purpose of the cmlc2 promoter? What is CreER and why was it used in this experiment? If constitutively active Cre was driven by the cmlc2 promoter, rather than an inducible CreER system, what color would you expect new cardiomyocytes in the regenerated area to be no matter what? Why?arrow_forwardWhat kind of organ size regulation is occurring when you graft multiple organs into a mouse and the graft weight stays the same?arrow_forward
- What is the concept "calories consumed must equal calories burned" in regrads to nutrition?arrow_forwardYou intend to insert patched dominant negative DNA into the left half of the neural tube of a chick. 1) Which side of the neural tube would you put the positive electrode to ensure that the DNA ends up on the left side? 2) What would be the internal (within the embryo) control for this experiment? 3) How can you be sure that the electroporation method itself is not impacting the embryo? 4) What would you do to ensure that the electroporation is working? How can you tell?arrow_forwardDescribe a method to document the diffusion path and gradient of Sonic Hedgehog through the chicken embryo. If modifying the protein, what is one thing you have to consider in regards to maintaining the protein’s function?arrow_forward
- Cardiopulmonary Anatomy & PhysiologyBiologyISBN:9781337794909Author:Des Jardins, Terry.Publisher:Cengage Learning,
- Biology: The Dynamic Science (MindTap Course List)BiologyISBN:9781305389892Author:Peter J. Russell, Paul E. Hertz, Beverly McMillanPublisher:Cengage LearningComprehensive Medical Assisting: Administrative a...NursingISBN:9781305964792Author:Wilburta Q. Lindh, Carol D. Tamparo, Barbara M. Dahl, Julie Morris, Cindy CorreaPublisher:Cengage Learning


