Formation of Body Cavities

Question 1

How many true and false ribs are there?

Answer 1

7 true

5 false

Question 2

What is contained in the mediastinum?

Answer 2

Heart
Trachea
Oesophagus
Vessels

Question 3

What are the divisons of the mediastinum?

Answer 3

1. superior
2. inferior:
   anterior
   middle
   posterior

Question 4

Where do the lungs begin to form in week 5?

Answer 4

Pericardioperitoneal canals

Question 5

What forms the fibrous pericardium?

Answer 5

Pleuropericardial membranes

Question 6

How do the pericardial and pleural cavities form?

Answer 6

Fusion of pleuropericardial folds

Question 7

Name the 2 types of pleura

Answer 7

Parietal

visceral

Question 8

What are mesenteries?

Answer 8

Double layers that enclose an organ and connect it to body wall

Question 9

Where is ventral mesentery found?

Answer 9

Terimal region of oesophagus
Stomach
Upper part of duodenum

Question 10

What does the ventral mesentery derive from?

Answer 10

Septum transversum

Question 11

What is gastroschisis?

Answer 11

Intestines outside of abdomen through hole

Question 12

What is an omphalocele?

Answer 12

Failure of intestine to return to abdomen

Question 13

What does the diaphragm peripherally attach to?

Answer 13

Xiphoid process
Thoracic wall
Ribs XI and XII
Vertebrae 
Ligaments

Question 14

What penetrates the diaphragm?

Answer 14

oesophagus and inferior vena cava

Question 15

What is a congentital diaphrahmatic hernia?

Answer 15

Abdomenal contents enter chest cos of incomplete formation of diaphragm