What are the functions of the following in breathing? (b) Diaphragm (c) Abdominal muscles (a) Ribs,
Answers
Explanation:
The functions of the respective structures are as follows:
(a) Ribs - The intercostal muscles stretch between the ribs which causes its outward and inward movement which enlarges the chest cavity all around.
(b) Diaphragm - The diaphragm flattens from the dome-shaped outline to an almost horizontal plane upon contraction.
(c) Abdominal muscles - It helps to increase the size of the thoracic cavity through the motion of the diaphragm which assists in inspiration.
Answer:
ribs:-
The ribs help in the expansion and contraction of the thoracic cavity and also protect the lungs and heart.
diaphragm:-
the diaphragm contracts and flattens and the chest cavity enlarges.
abdominal muscles:-
The lungs have no skeletal muscles of their own. The work of breathing is done by the diaphragm, the muscles between the ribs (intercostal muscles), the muscles in the neck, and the abdominal muscles.
Explanation:
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