Home › AP EAMCET › Biology › Human Anatomy and Physiology-I › Contraction of external intercostal muscles duri…
Contraction of external intercostal muscles during inspiration
Alowers the sternum
Brelaxes the diaphragm
Clifts the ribs and sternum
Dlowers thoracic volume
Answer & Solution
Correct answer: C. lifts the ribs and sternum
Raising the ribs and sternum enlarges the thorax in the dorso-ventral axis.
Related questions
Right ventricular systole pumps blood through which vessel?Which valves close when ventricular systole begins?During atrial systole, what do the atria complete?What is the role of the delay at the AV node?Which pacemaker structure starts each heartbeat?Which glands of the duodenum secrete bicarbonate-rich mucus?What are the lymph capillaries inside intestinal villi called?Which three parts make up the small intestine, in order from the stomach?