What is the messentery?

Mesentery: large fanlike serous fold that connects the GI tract to the abdominal wall

What are the four layers of digestive tract tissue?

Mucosa: innermost layer made up of mucous epithelium, a layer of loose fibrous connective tissue called the lamina propria, and a thin layer of smooth muscle called the muscularis mucosae. Submucosa: submucosa layer of the digestive tube is composed of c

How many permanent teeth does the average human have? What could change this? How many diciduous teeth?

32. The presence/absence of wisdom teeth could drop this number down to 28 or a patient could have had extractions performed. 20

What is the hardest layer of the tooth? Why is it so strong?

Enamel: outer covering of tooth stronger than bone, consists of approximately 97% calcified (inorganic) material and only 3% organic material and water. Enamel develops as an in-terlocking set of rods that forms an incredibly strong coating over the crown

Is the esophagus rounded or collapsed during breathing?

Collapsed: the esophagus is only rounded when occupied with a food bolus.

What is vital capacity?

\max air expire from fully inflated lung. Tidal volume + inspiratory reserve+expiratory reserve

What is dyspnea? orthopnea?

Dyspnea: labored or difficult breathing and is often associated with hypoventilation (decrease in pulmonary ventilation that results in elevated blood levels of carbon dioxide). Orthopnea refers to dyspnea while lying down.

What is a surfactant and why is it needed?

protein and phospholipid secretions of type II cells in the wall of each alveolus. Surfactant reduces surface tension and thus prevents fluid contraction and alveolar collapse. hyaline membrane disease (HMD) can occur in premature infants who often do no

What is elastic recoil?

ability of the thorax and lungs to return to their preinspiration volume

gas’s volume is inversely proportional to its pressure (volume up pressure down). As the size of the thorax increases, the intrapleural (intrathoracic) and alveolar pressure decreases and inspiration occurs.

What is Dalton's law (the law of patial pressures)?

the total pressure exerted by a mixture of gases is the sum of the pressure of each individual gas.

What is anatomical dead space? Phisiological dead space?

Anatomical:air passageways—nose, pharynx, larynx, trachea, and bronchi – that do not take part in gas exchange, about 30% of the TV. Phisological:anatomical dead space+alveolar dead space caused by things like pulmonary embolism blocking lung vessels.

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Christine Kickel

Anatomy week 13

Question	Answer
What is the messentery?	Mesentery: large fanlike serous fold that connects the GI tract to the abdominal wall
What are the four layers of digestive tract tissue?	Mucosa: innermost layer made up of mucous epithelium, a layer of loose fibrous connective tissue called the lamina propria, and a thin layer of smooth muscle called the muscularis mucosae. Submucosa: submucosa layer of the digestive tube is composed of c
How many permanent teeth does the average human have? What could change this? How many diciduous teeth?	32. The presence/absence of wisdom teeth could drop this number down to 28 or a patient could have had extractions performed. 20
What is the hardest layer of the tooth? Why is it so strong?	Enamel: outer covering of tooth stronger than bone, consists of approximately 97% calcified (inorganic) material and only 3% organic material and water. Enamel develops as an in-terlocking set of rods that forms an incredibly strong coating over the crown
Is the esophagus rounded or collapsed during breathing?	Collapsed: the esophagus is only rounded when occupied with a food bolus.
What is vital capacity?	\max air expire from fully inflated lung. Tidal volume + inspiratory reserve+expiratory reserve
What is dyspnea? orthopnea?	Dyspnea: labored or difficult breathing and is often associated with hypoventilation (decrease in pulmonary ventilation that results in elevated blood levels of carbon dioxide). Orthopnea refers to dyspnea while lying down.
What is the pressure of air under standard conditions?	760 mmHg
What is a surfactant and why is it needed?	protein and phospholipid secretions of type II cells in the wall of each alveolus. Surfactant reduces surface tension and thus prevents fluid contraction and alveolar collapse. hyaline membrane disease (HMD) can occur in premature infants who often do no
What is elastic recoil?	ability of the thorax and lungs to return to their preinspiration volume
What is Boyle's law?	gas’s volume is inversely proportional to its pressure (volume up pressure down). As the size of the thorax increases, the intrapleural (intrathoracic) and alveolar pressure decreases and inspiration occurs.
What is Dalton's law (the law of patial pressures)?	the total pressure exerted by a mixture of gases is the sum of the pressure of each individual gas.
What is anatomical dead space? Phisiological dead space?	Anatomical:air passageways—nose, pharynx, larynx, trachea, and bronchi – that do not take part in gas exchange, about 30% of the TV. Phisological:anatomical dead space+alveolar dead space caused by things like pulmonary embolism blocking lung vessels.

Created by: christinek1966

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