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Byju's Answer
Standard XIII
Biology
Mechanism of Breathing
Ribs are elev...
Question
Ribs are elevated when muscles between ribs are________
A
relaxed
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B
contracted
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C
dilated
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D
dilated
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Solution
The correct option is
B
contracted
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Similar questions
Q.
Ribs are elevated when muscles between ribs are________
Q.
Muscles which are found between ribs and breast are called -
Q.
What are the functions of the following in breathing?
(a) Ribs
(b) Diaphragm
(c) Abdominal muscles
Q.
Read the following statements (A to D)
(A) Rib is a flat bone connected vertebral column and dorsally to the sternum.
(B) First seven pairs of ribs are called true ribs.
(C) 8
t
h
,9
t
h
and 10
t
h
pairs of the ribs are called vertebro sternal ribs.
(D) 10
t
h
and 11
t
h
pairs of ribs are not connected dorsally and are therefore called floating ribs.
How many statements are correct?
Q.
The adjoining vertebrae, ribs and skin are inter-connected with slender body muscles are seen in
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