Human Thorax Anatomy and Embryology Quiz

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How many pleural cavities are present in the thorax?

Four

Two (correct)

One

Three

What is the main function of the thorax?

Excretion

Digestion

Respiration (correct)

Circulation

What structures does the thoracic wall consist of?

Lymphatic vessels

Endocrine glands

Skeletal elements and muscles (correct)

Blood vessels and nerves

How many thoracic vertebrae are there posteriorly?

12 Signup and view all the answers

What is the superior thoracic aperture formed by?

T1, medial margin of rib I, manubrium of the sternum Signup and view all the answers

What forms the inferior thoracic aperture?

Body of T12, rib XII, xiphoid process Signup and view all the answers

Which of the following is part of the thoracic wall's skeletal framework?

Sternum Signup and view all the answers

How many sites for articulations with ribs are there in the thoracic wall?

2 Signup and view all the answers

What is the main function of the thorax in relation to the heart and lungs?

To protect Signup and view all the answers

What is the function of the thorax as a conduit?

For passing air Signup and view all the answers

What is the main role of the thorax in biomechanics?

To facilitate respiration Signup and view all the answers

What is the superior margin of the manubrium in the same horizontal plane as?

The intervertebral disc between TII and TIII Signup and view all the answers

Which muscle is the most powerful and important during inspiration?

Diaphragm Signup and view all the answers

Which ribs articulate directly with the sternum?

True ribs Signup and view all the answers

Which ribs lack an anterior connection with other ribs or with the sternum?

Ribs XI and XII Signup and view all the answers

Which muscle depresses the ribs?

Transversus thoracis muscles Signup and view all the answers

Which joint is not synovial but a fibrocartilaginous joint?

Sternocostal joints Signup and view all the answers

Which muscle participates in the decrease of thoracic dimension during exhalation?

Internal intercostals Signup and view all the answers

Which thoracic vertebrae lacks inferior costal facets and articulates only with its own ribs?

TX Signup and view all the answers

Which muscle is found in each intercostal space and is responsible for expiration?

Internal intercostals Signup and view all the answers

Which muscle is innervated by the phrenic nerve and is attached peripherally to the xiphoid process?

Diaphragm Signup and view all the answers

Human Thorax Anatomy and Embryology Quiz

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