Chapter 6 (A)

25問 • 1年前

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Choose the correct statement(s) referring to the digestive system:

Consists of the gastrointestinal tract and accessory organs, It is responsible for the breaking down the large molecules in food into small molecules and for the absorption of small molecules, of water and of minerals in the body

The following statement(s) referring to the digestive system is/are not true:

It is a part of the gastrointestinal tract, The tubular organs which make it up are represented by the salivary glands and the liver, One of its functions is the regulation of blood plasma volume

Which of the anatomical structures below belong to the digestive system?

The oral cavity, the oesophagus, the large bowel, The stomach, the small bowel, the large bowel, The parotid glands, the liver, the pancreas

The following structures are a part of the gastrointestinal tract:

The oral cavity (mouth) and the pharynx – the first segments of the gastrointestinal tract, The oesophagus, situated in the continuation of the pharynx, The large bowel, the terminal segment of the gastrointestinal tract

The tunics of the gastrointestinal tract are:

The external tunic – the serous layer (the visceral layer of the peritoneum), The submucosa, located exterior to the mucosa, The submucosa, which contains blood vessels, lymph vessels and nerves

The smooth muscles in the wall of the gastrointestinal tract play the following roles:

The circular ones reduce its diameter during contraction, The longitudinal ones shorten its length during contraction

The external tunic of the gastrointestinal tract:

Is also called the serosa or serous layer, Is represented by the visceral peritoneum which, together with the parietal one delimit the intraperitoneal cavity, Has a double-stratified extension – the mesentery – which supports most of the abdominal organs

The walls of the gastrointestinal tract consist of the following tunics:

The mucosa – the innermost tunic, which contains enzyme and mucus secreting glands, The submucosa – which contains blood vessels, lymph vessels and nerves, The serosa – which secretes a fluid that lubricates the external surface of the organs and allows them to slide freely

Choose the false statements referring to the external runic of the gastrointestinal tract:

It consists of the parietal peritoneum, continuing with the visceral peritoneum which lines the abdominal cavity, It consists of a double-stratified mesentery, It contains mucus-secreting glands which serve to protect the tissues of the gastrointestinal tract

The visceral peritoneum:

Forms the external tunic of the gastrointestinal tract, Is continuous with the parietal peritoneum, Contains cells that secrete a fluid which lubricates the external surface of the organs, Together with the parietal peritoneum, they form a space called „peritoneal cavity”

The following statements referring to the oral cavity are false:

It communicates anteriorly with the oropharynx and it has no gustatory function, The palate of the oral cavity consists of the hard palate and the soft palate, It mixes food with gastric secretions, and it has a gustatory and a masticatory function

The functions of the oral cavity are as follows:

Ingestion of food, Gustatory function, Mechanical digestion of food, Lubrication of food

Choose the statements which contain two true assertions, both referring to anatomical characteristics of certain structures of the oral cavity:

The canines have a conical shape. The tongue consists of striated muscles, The basic structure of a tooth consists of the crown, the neck and the root. The external surface of a tooth is covered with enamel

In the oral cavity:

Incisors cut large pieces of food, Canines grab and tear food, Premolars and molars cut food into smaller pieces/grind food

In the oral cavity:

The tongue turns food into food bolus with the help of saliva, Teeth carry out the mechanical digestion of food, Food is mixed with salivary secretions

Choose the true statement(s) referring to the teeth:

The milk teeth are 20 in number and they are usually lost by the age of 6, being replaced by permanent teeth, Permanent teeth form 32 pairs and replace deciduous teeth, Teeth consist of incisors, canines, premolars and molars

Choose the correct association referring to the teeth:

Canines – conical shape – grabbing and tearing food, Premolars – flat teeth – cutting into smaller pieces/grinding food, Molars – flat teeth - cutting food into smaller pieces

Dental enamel:

Is one of a tooth’s main components, Is the toughest substance in the body, Mainly consists in calcium salts (major component of hydroxyapatite)

Dental enamel: false statements:

Is covered by the tooth’s crown and covers dentin, It is very hard, but not as hard as dentin, Forms the largest part of the tooth

Dentin:

Is one of the tooth’s main components, Is softer than dental enamel, Surrounds the tooth’s pulp, being located inferior to the enamel

Dentin – false statements:

Mainly consists of hydroxyapatite, having the same hardness as enamel, Contains blood vessels, nerves and the tooth’s connective tissue

Dental pulp:

Is located inside the tooth, in the pulp cavity, Is surrounded by dentin, covered by enamel, Contains blood vessels, nerves and the tooth’s connective tissue

The following statement(s) is/are true about the palate – the structure the forms the roof of the mouth:

It consists of a hard anterior part and a soft back part, The uvula represents a conic projection of the soft palate

Choose the false statements about the pharynx and the oesophagus:

The oesophagus is the first segment which displays the three layers of the gastrointestinal tract, The oesophagus extends to the pyloric sphincter, where the stomach begins

The tonsils:

Consist in a bundle of lymphatic tissue located in the mucosa, Are of three types: palatine, pharyngeal, lingual, Belong to the lymphatic system, Have a role in the body’s defence

Chapter 1 (komplett)

X · 50問 · 1年前

Chapter 1 (komplett)

50問 • 1年前

Chapter 1 (A)