Предмет: Математика, автор: martaloshkova2020

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Автор ответа: fsdfsfdfas
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Ответ:

Длина книжной полки 154 см

Пошаговое объяснение:

1) 12 умножаем на 14 = 168 см - отделения

2) 1 на 14 = 14 см - стенки

3) (вычисляем ответ) 168-14= 154 см

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The main parts ofthe human body are the head, the trunk, the upper and the lower extremities or limbs. The head is connected with the trunk with the neck.

The head is formed by the back part, the crown and the face. The upper part of the face is formed by the forehead and the temples. Below there are the eyes, the nose, the cheeks, the mouth and the chin. On both sides of the head there are the ears.

The eye is composed of the eyeball and the pupil. The eyebrows, lashes and the lids protect theeyes.

The oral cavity contains the teeth which are set in the gums, the tongue, the hard and the soft palate, the tonsils and the throat. The margins of the mouth are the lips. The jaws form the framework of the mouth. [ рис 3 ]

The organs of senses are the eyes, the ears, the nose, the skin and the tongue. We see with our eyes.We hear with our ears. We smell with our nose. We taste with our tongue. We touch with our skin.

The parts of the trunk are the breast, the waist, the abdomen, the back, the buttocks and the genitals.

In the thoracic cavity there are the respiratory, the circulatory and the digestive organs.

The main organs ofrespiration are the nasal cavity, the pharynx, the larynx, the trachea, the bronchi, the lungs and the diaphragm. We breath with our lungs.

The circulatory system comprises the heart and the blood vessels - the arteries, the veins and the capillaries. The heart pumps blood to various parts of the body.

The organs of digestion are contained in the oral cavity, in the thoracic cavity and in the abdominal cavity. Digestion begins in the mouth. From the mouth food passes in to the esophagus which is in the thoracic cavity. Through the esophagus food passes into the stomach and the intestines where it is further digested. The liver, spleen and the gall­bladder also take part in the process of digestion.

The main excretory organs are the kidneys, the ureters, the urethra and the urinary bladder. The organs of excretion excrete waste products.

The body is coveredwith the skin. The back and the top of the head are covered with hair. At the finger-tips there are the nails.

The nervous systemconsists of nerves, the brain and the medulla.

The osseous system consists of bones which support the body. Their places of articulation are called the joints. The muscular system consists of muscles which contract and move the limbs.

The main bones which form the skeleton are the skull, the vertebral column which consists of vertebrae, the ribs, the scapulae, the clavicles and the sternum which form the thoracic cavity, and the pelvic bones. The humerus, the ulna, the radius are the bones which form the upper limbs. The femur, the tibia and the fibula are bones which form the lower extremities.

The main glands ofthe human body are the secretory glands, such as the thyroid, the pancreas, the suprarenal and the salivary glands. The excretory glands are the sweat glands,the adipose glands and the lacrimal glands.

The arm is formed by the shoulder, the upper arm, the elbow and the forearm. The hand consists of the wrist, the palm, the fingers and the thumb.

The leg is formed by the hip, the thigh, the knee, the shank, the calf, the ankle. The foot consists of the heel, the sole and the toes.

The substance which forms the human body consists of cells, fibers and tissues.
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