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respiratory system M
MT 103.1
Question | Answer |
---|---|
What is the sequence of passage through which air passes through respiriatory system | Nasal cavities-pharynx-larynx-trachea-bronchus-bronchioles-aveoli |
Windpipe | Trachea |
nares | nostrils |
the opening into the larynx is the? | glottis |
adams appple | larynx |
right lung is divied to how many lobes | three lobes |
left is divided into how many lobes | Two lobes |
Each lung is covered with? | pleural membrane |
the plueral membrane that cover the lung | visceral pleura |
Its floor is the strong dome-shaped muscle | diaphragm |
the movement of air into and out of the lungs | pulmonary ventilation |
expiration | exhalation breathing out |
inspiration | inhalation breathing in |
the two muscles that contract during inspiration | diaphragm, external intercostals |
what happens during inhalation | diaphrag and intercostals muscles contract - volume of chest cavity increase- lungs expand -volume of lungs increases - air pressure descreases - air move into lungs |
what happens during exhalation | diaohragm intercostals muscles relax- volume of cavity decreases - lungs recoil -lung volume decreases - pressure in aveoli increases - air rushes out of lung |
the movement of molecules from a region of higher concentration to region of lowe rconcentration | diffusion |
the body uses up about how uch of inhaled oxygen | one third of oxygen |
how many time a day do we breath and how any pounds of air | 20,000 time a day... 35 pounds |
seals off the larynx during swallowing | epiglottis |
the process by which cells capture energy from nutrients | celluar respiration |
the rate of respiration is mainly determined by | carbon dioxide concentration |
normal breathing rate for huan adult | 12- 20 miniutes |
attachments of the diaphragm | o-xphoid process 7-12 ribs L1-L3 I- central tendon |
demensions of the trachea | 4-4.5 inches long, 1 inch in diameter |
helps produce sound in the larynx | arytenoid cartilage |
forms the adams apple | thyroid cartilage |
carbon dioxide is transported mainly in the form of | bicarbonate ions |