Symptoms of iron-deficiency anemia are related to decreased oxygen delivery to the entire body and may include: 1  Being pale or having yellow sallow skin. 2  Unexplained fatigue or lack of energy. 3  Shortness of breath or chest pain, especially with activity.  Unexplained generalized 1  weakness. Rapid heartbeat.  Pounding or whooshing in the ears.
The thoracic cavity contains the heart, the lungs, and some abdominal organs. The thoracic cage provides attachments for muscles of the neck, thorax, upper limbs, abdomen, and back. The thorax moves up and down to allow breathing, so it is one of the most dynamic regions of the body.
Best Answer: Diaphragm: Expands downwards into the abdominal cavity to allow for the lungs to expand as we inhale. As the diaphragm contracts the air is expelled from the lungs. Ribs: The ribs protect the lungs and expand as you inhale to fascillitate space for the lungs to expand like the diaphragm.The ribs then contract expelling the air in the lungs.Altogether now: The diaphragm relaxes and expands downward into the abdominal cavity as the ribs relax to also expand for an increase in air space for the lungs to take in O2.ibs: The ribs protect the lungs and expand as you inhale to fascillitate space for the lungs to expand like the diaphragm. The ribs then contract expelling the air in the lungs.