الفصل السادس احياء ثالث test

Q:Write The chemical equation of respiration?

C6H12O6 +6 O2 →→ 6 CO2 + 6 H2O + ATP.

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Q:What is the role of oxygen in energy production?

To catabolize food particles to produce energy

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Q:What is the role of blood capillaries which is found in mucus membrane of the nasal cavity??

To warm the air that goes to lungs

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Q:define Pharynx?

It is a common passage between the digestive system and respiratory system. Mouth and nose are connected to each other at the posterior region of pharynx.

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Q:the Larynx cartilages are combined with each others by ---------?

elastic membrane

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Q:What is the location of vocal cords?

inside larynx they are connected with first cartilage at the top and third cartilage at the bottom.

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Q:Explain how the vocal cords generate sound?

When the air that comes out of the lungs passes over the vocal cords, they vibrate and generate sounds.

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Q:Give a reason: the air can enter and leave out through trachea easily?

Because the trachea is always open.

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Q:Give a reason: The trachea always open.?

Because it is composed of (16-20) C-shaped cartilages which keep the trachea open

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Q:The thoracic cavity is separated from abdominal cavity by a muscular wall called-----------

diaphragm.