Biology Questions and Answers
Respiratory pigments are molecules
present in the blood that bitransporting it to the tissues.nd to oxygen
In vertebrates this hemoglobin, reddish due to the irone respiratory pigment
of its composition. In crustacean and
arachnid arthrmolluscs the respiratoryopods and in some pigment is (^)
hemocyanin, blue due to the copper of
its composition. Ahemoglobin, hemerythrin annelids havend
chlorocruorin as respiratory pigments.
- What are the organs that
form the human respiratory
system?
The organs that are part of the human
respiratory systemthree groups: lungs, airway can be divided into and
respiratory muscles.
The lungs are lungs made of alveoli whthe right and the leftere gas
exchange (entrancof carbon dioxide) takes placee of oxygen and exit; the
lungs are covered by the pleura (a
serous membrane). The airwaycomprehends the nose, the pharynx, (^)
the larynx (including the vocal cords),
the trachea, bronchioles. Ththe bronchi ane muscles upon whichd the (^)
the breathinmainly the diaphragm ag process dend thepends are
intercostal muscles (muscles between
the ribs).
- What is the anatomical
reason for the left bronchus to
be more elevated than the
right bronchus? Why in most
cases of aspiration of foreign
material by children is the
object found in the right
bronchus?
The left bronchus is morthe right bronchus because of thee elevated than
position ofthe chest, anterior a the heart in the left side nd inferior to theof
left bronchus.
Accidentally aspired objects arefrequently found in the right bronchus (^)
because trachea and this bronchus is lower thanthe inferior angle between the (^)
the inferior angle between the tracheaand the left bronchus since the left
bronchus is more horizontalized.
Therefore aspired objects tend to fall ithe right side (bronchus) and not in then (^)
left.
- How does the body defend
itself from microorganisms
and other harmful substances
that enter the airway during
the breathing process?
The epithelium epithelium and has mucus-secretinof the airway is a ciliatedg
specialized cells. The secreted mucus
covers the internal retaining organismswall of the airway and foreign
particles that then are swept by the cilia
of the epithelium.
In the mucous ciliated epithelium of the
airway there is also intense activity of
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