A. ACTIVITY
Briefly explain the primary cause or mechanism of the increase in respiratory rate or depth and/or respiratory difficulties in the following cases (one to two sentences only)
1. Initiation of exercise
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The proprioceptors stimulate DRG due to a nerve impulse from the movement of joints and muscles at the start of an activity. Also, the branches of the axon feed excitatory impulses into the DRG.
2. Moderate exercise
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The body demands more oxygen as it uses more of it during training; therefore, the respiration rate increases to meet this necessity of the body.
3. Abrupt ascent into high altitudes
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The lungs respond by rapid and deep breathing or hyperventilation to adequately supply sufficient oxygen; our body finds it challenging to handle external pressure in high-altitude areas due to the barometric pressure and the subsequent reduction of oxygen pressure.
4. Paralysis of phrenic nerve
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Since the phrenic nerve is responsible for the contraction of the diaphragm, if paralysis in this area occurs, compensation for the sudden need for oxygen happens through increased breathing.
5. Severe anemia
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Severe anemia causes an enormous drop in blood, affecting hemoglobin. Therefore, the body will respond to survive by signaling that we need exercise at mag w]ho workout.
6. Advanced Pregnancy
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During advanced pregnancy, hormonal imbalances are very high, increased body weight due to the baby, and altered metabolic processes according to the needs of the pregnant’s body. That said, breathing adjustment suffices the oxygen loss caused by these factors.