Asked by Primy Safari on Jul 13, 2024
Verified
Contraction of the ________ will increase the superior-inferior dimension of the thoracic cavity.
A) rectus abdominis
B) internal intercostals
C) diaphragm
D) external intercostals
E) sternocleidomastoid
Superior-Inferior Dimension
Refers to a vertical orientation or measurement from the top (superior) to the bottom (inferior) of a structure.
Diaphragm
A dome-shaped muscle that separates the chest cavity from the abdominal cavity, playing a crucial role in breathing.
Internal Intercostals
Muscles located between the ribs that aid in the downward movement of the ribcage during exhalation.
- Learn the foundational physiological concepts guiding the regulation of breathing and gas exchange at the alveolar level.
Verified Answer
BA
Bensu AlsaçJul 16, 2024
Final Answer :
C
Explanation :
The diaphragm is the primary muscle involved in breathing. When it contracts, it moves downward, increasing the vertical (superior-inferior) dimension of the thoracic cavity, allowing for inhalation.
Learning Objectives
- Learn the foundational physiological concepts guiding the regulation of breathing and gas exchange at the alveolar level.