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4. A says a word. B must say a second word that connects with the first in some way. Then c offers a third word to connect with b’s word, and so on round the circle.

5. Rearrange these series of words to form sentences.

1. irregularly skull shaped flat the collection is of and bones.

2. is the cranium into two divided parts: and the face the skull.

3. which and its enclose the bones, the brain ten in number mem­branes, are .

4. as a skull is not the solid whole.

5. breed the shape of in according dogs the skull and proportions its differ to the.

6.Read the text and translate Russian words into English.

1. Череп – это собрание плоских костей и костей беспорядочной формы.

2. Череп – это собрание плоских костей и костей беспорядочной формы, которые защищают лицо и мозг.

3. Череп – это собрание плоских костей и костей беспорядочной формы, которые защищают лицо и мозг, а также поддерживает органы жевания.

4. Череп – это собрание плоских костей и костей беспорядочной формы, которые защищают лицо и мозг, а также поддерживает органы жевания, держит глаза в их впадинах.

5. Череп – это собрание плоских костей и костей беспорядочной формы, которые защищают лицо и мозг, а также поддерживает органы жевания, держит глаза в их впадинах, но различается в зависимости вида и породы животного.

The skeleton

1. Read, translate the text and write out words you think them to be important.

The skeleton is composed of a varying number of bones in the different animals; and it varies even among individuals of the same species and breed. These variations are due to age in some cases, the younger animals have cer­tain hones separate that fuse together later; while in the tails of all animals the number of bones is likely to differ according to the varying length of that structure in animals of the same breed and size. The skeleton is divided into: 1) an axial part, consisting of the skull, the vertebral, the ribs with their carti­lage, and the sternum or breastbone; and 2) an appendicular portion, consist­ing of the four limbs. In addition to these divisions, certain parts of the skele­ton are embedded in the substance of organs, and are described as the visceral skeleton, e.g. the bones in the tongue, that in the heart of the ox, the snout of the pig, etc.

Lungs

1. Read, translate the text and write out words you think them to be important.

The lungs are a pair of organs situated in the thoracic (chest) cavity, in which exchange of gases between the blood and the air takes place. The air enters by the nostrils, passes through the nasal passages, pharynx, larynx, tra­chea, and bronchi and finally enters the air cells in the lungs themselves. The blood is carried to the lungs by the pulmonary artery, which divides and sub­divides into tiny capillaries which lie around the wails of the air cells.

Lung is composed of very highly elastic tissue which consists of multi­tudes of tiny sacs arranged at the terminal parts of the smallest of the bron­chioles.