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FA1 Anatomy 1 > Lecture 9 9/19/23 > Flashcards

Lecture 9 9/19/23 Flashcards

1
Q

What are the three embryonic layers?

A

-ectoderm
-mesoderm
-endoderm

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2
Q

Why is there a ventral portion of the abdominal cavity that “falls out?”

A

to allow for the GI tract to twist and turn to fill the cavity

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3
Q

What tissue type do the body cavities form from?

A

mesoderm

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4
Q

What structures form the diaphragm?

A

-2 pleuroperitoneal folds
-septum transversum

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5
Q

How can an improperly formed diaphragm be distinguished from a diaphragm tear?

A

-improperly formed diaphragm will have a straight, clean edge
-diaphragm tear will have a jagged edge

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6
Q

What are the characteristics of mesothelium?

A

-simple squamous cell layer
-comes from mesoderm
-lines the body cavities
-secretes serous fluid to act as lubrication

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7
Q

What is the role of the anatomic pericardial sack?

A

to protect the heart from friction

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8
Q

Why doesn’t the anatomic pericardial sack close all the way?

A

to allow for an opening for vessels and nerves to exit

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9
Q

How do the anatomic pericardial sack and surgeon’s pericardial sack differ?

A

-anatomic pericardial sack includes just visceral pericardium and parietal pericardium
-surgeon’s pericardial sack also includes pericardial mediastinal pleura and fibrous pericardium

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10
Q

What is the name for the cavity surrounding the heart?

A

pericardial cavity

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11
Q

What is the name for the cavities surrounding the lungs?

A

pleural cavities

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12
Q

What is the name for mesothelium surrounding the lungs?

A

pleura

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13
Q

What is the name for mesothelium surrounding the heart?

A

pericardium

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14
Q

What is the name for pleura up against the lungs?

A

visceral pleura/pulmonary pleura

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15
Q

What is the name for pleura up against the body wall?

A

parietal pleura

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16
Q

What is the name for pericardium up against the heart?

A

-visceral pericardium/epicardium

17
Q

What is the name for the pericardium facing the body?

A

parietal pericardium

18
Q

What are the four divisions of parietal pleura?

A

-costal pleura
-mediastinal pleura
-pericardial mediastinal pleura
-diaphragmatic pleura

19
Q

What are the three cavities within the thoracic cavity?

A

-2 pleural cavities
-pericardial cavity

20
Q

What is the mediastinum?

A

midline partition containing heart, trachea, and esophagus

21
Q

What is the fibrous pericardium?

A

fibrous connective tissue layer connecting the pleura and pericardium and supporting the squamous cell layers

22
Q

What is the relationship between organs and their associated cavities?

A

the organs are surrounded by the cavities but are not in the cavities

FA1 Anatomy 1 (26 decks)

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