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XI. Read and translate the text using a dictionary.

Structure and Functions of Teeth

Humans have four types of teeth, each with a specific size, shape and function. Adult humans have eight incisors located at the front of the mouth. Next to incisors are canines (cuspids) named so for their resemblance to the pointing fangs of dogs. the upper canines are sometimes called eyeteeth. next to canines are bicuspids or premolars, flat teeth with pronounced cusps. After bicuspids come molars with the most vigorous chewing function. There are three sets of molars in each jaw referred to as the first, second and third molars. the third molars are often called wisdom teeth. They developed thousands of years ago when human diets consisted of mostly raw and unprocessed food that required extra chewing and grinding power. Today wisdom teeth are not needed for chewing.

So the functions of the teeth are obvious: to chew food and to mix it with saliva, to aid speech and to maintain the position of the jaws, The teeth ate the part of the digestive system.

XII. Make up five questions to the text Structure and Functions of Teeth. Lesson 6

Грамматика: словообразование, причастия

The Maxilla

I. Read and give Russian equivalents to the following words and word combinations of the Latin-Greek origin:

portion [‘pLSqn], median [‘mJdjqn], occupy [‘OkjupQi], frontal [‘frAntl], zygomatic [zQi’goumqtik], orbit [‘Lbit], pyramid [‘pirqmid], orient [‘Lriqnt], vertical [‘vWtikql], nasal [‘neizql], apex [‘eipqks], lateral [‘lqetqrql], depression [dip’reSqn], region [‘rJGqn], perforate [‘pWfqreit]

II. Learn the following words:

to knit - соединять

except [ik’sept] - кроме

process [‘prouses] - отросток

to extend [iks’tqnd] - простираться, расширяться

zygoma [zQi’goumq] - скуловая кость

palatine [‘pqelqtQin] - небный

to embed [im’bed] - вставлять, внедрять

socket - впадина, углубление

to correspond [kOres’pOnd] - соответствовать

nares [‘nRrqs] - ноздри

hollow - полый

cheek - щека

to exhibit [ig’zibit] - показывать,проявлять

protruded - выступать, выдаваться

depression - впадина, углубление

fossa [‘fOsq] - ямка, впадина

foramen [fO’reimqn] - отверстие, канал

boundary [‘bQundqri] - граница

ridge [riG] - гребень, край

bulging [‘bAlGiN] - выпуклость, вздутие

tuberosity [,tjHbq’rOsiti] - бугристость, бугорок, узелок

antrum [‘qentrqm] - полость, пазуха

to perforate [‘pWfqreit] - просверливать

hole - дыра, отверстие, углубление

floor - дно, нижняя часть

fissure [‘fiSq] - трещина, щель, борозда

III. Read the words, define the parts of speech and translate them:

portion, closely, movable, namely, frontal, occupy, oriented, facial, protruded, depression, entrance, forming, tuberosity, fissure, extending

IV. Choose the correct form of the Participle I or II an translate the word combinations.

1. a balancing / balanced diet

2. an interesting / interested book

3. an injuring / injured jaw

4. a breaking / broken tooth

5. a crying / cried baby

6. the covering / covered mucosa

7. disappointing / disappointed results

8. a disappointing / disappointed patient

9. calling / called canine fossa

10. a developing / developed ridge

V. Translate the following word combinations:

подвижная нижняя челюсть, кости верхней челюсти, срединная линия лица, лобный отросток, скуловой отросток височной кости, небный отросток, форма дуги, соответствовать форме корней зубов, носовая полость, поверхность лица, нижняя выступающая граница, впадина над клыком, внутриглазничный канал (отверстие), выпуклость, называемая бугорком

VI. Read the sentences and translate them paying attention to the functions of the participle I and II.

1. Having good knowledge of English he could easily read articles in English and American medical journals in the original.

2. While taking a course of practical training medical students act as doctor’s assistants.

3. Having acquired the knowledge of the structure and functions of the human body medical students can learn how to recognize diseases.

4. Having finished our work we could go home.

5. The dentist working at that chair is treating a patient with pulpitis.

6. The lips are covered with the mucous membrane.

7. There is a depression above the canine and first premolar teeth called the canine fossa.

8. The superior maxillary bones being knit together along the median line of the face are of a very irregular form.

9. The oral cavity is separated from the nasal cavity by the hard palate.

10. Being perforated by small holes the posterior surface transmits nerves and blood vessels to the molar teeth.

11. When their teeth are erupting babies can be irritable.

12. Being the central part of the superior maxillae the body has four surfaces.

13. There is a well-developed ridge between the zygomatic fossa and the facial surface.