Предмет: Биология, автор: lehastrelkov2000

сделать модель лёгких человека из бутылки,перчатки, и шарика . можно фото или видео

Ответы

Автор ответа: Аноним

1.Верхняя часть от пластиковой бутылки
2.Резиновая перчатка
3.Воздушный шарик

Пропусти через горлышко воздушный шарик и, выворачивая его, надень на горлышко бутылки (смотри рисунок)
Снизу на бутылку натяни резиновую перчатку.
Потяни за перчатку вниз, и шарик немного надуется. Это был вдох. Отпусти перчатку, шарик сдуется - это выдох.

Научное объяснение: перчатка играет роль специальной мышцы - диафрагмы, шарик - это легкое, а сама бутылка - это герметичная грудная полость.Работой мышц мы увеличиваем объем грудной полости, в ней снижается давление, благодаря этому в легкие поступает воздух (закон Бойля-Мариотта).

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Simple Ex. 67. Use the Simple Present, Present Continuous Past, or Past Continuous.
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