Write the odd one and write the common feautures of others
a) diaphragm
b) nostril
c) trachea
d) nasal cavity
Answers
1. Diaphragm:
It is dome shaped, slightly higher on the right side and it curves up toward the centre. The diaphragm features a boomerang shaped central tendon which is connected all around by muscular fibers which originate on the lumbar spine,the bottom edge of the ribcase and sternum.
2. Nostril :
A nostril (or naris /ˈnɛərɪs/, plural nares /ˈnɛəriːz/) is one of the two channels of the nose, from the point where they bifurcate to the external opening. In birds and mammals, they contain branched bones or cartilages called turbinates, whose function is to warm air on inhalation and remove moisture on exhalation.
3. Trachea :
The trachea is composed of about 20 rings of tough cartilage. The back part of each ring is made of muscle and connective tissue. Moist, smooth tissue called mucosa lines the inside of the trachea. The trachea widens and lengthens slightly with each breath in, returning to its resting size with each breath out.
4. Nasal Cavity :
The nasal cavity is the inside of your nose. It is lined with a mucous membrane that helps keep your nose moist by making mucus so you won't get nosebleeds from a dry nose. There are also little hairs that help filter the air you breathe in, blocking dirt and dust from getting into your lungs.
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