1. As the diaphragm contracts during inhalation how does the ribcage allow the
air to move into the lungs?___
2. Why does a person feel tired if he is doing strenuous activities?
_
3. Energy keeps our body warm when we feel cold, aside from that what is the
other important uses of energy in our body cells and tissues?
_____________
4. Breathing rate depends on what ?_
5. What are the mechanism of breathing which is the most important activities
involve in respiratory system?____________________

1 sentence lang ang sagot pls
Brainliest ko yung magandang sagot

Answer:.When the lungs inhale, the diaphragm contracts and pulls downward. At the same time, the muscles between the ribs contract and pull upward. This increases the size of the thoracic cavity and decreases the pressure inside. As a result, air rushes in and fills the lungs

2.At the start of exercising or when performing tasks, your muscles feel strong and resilient. However, over time and after repeating movements, your muscles may begin to feel weaker and tired. This can be defined as muscle fatigue. Muscle fatigue is a symptom that decreases your muscles' ability to perform over time.

3.The fundamental law of energy

The fundamental law of energy Like an automobile only runs on gasoline, the human body runs on only one kind of energy: chemical energy. More specifically, the body can use only one specific form of chemical energy, or fuel, to do biological work – adenosine triphosphate (ATP).

4.The respiratory rate

5.Control of Breathing

Control of BreathingRespiration is controlled by the respiratory center in the brain stem in response to CO2 levels. Medulla Oblongata sets the basic rhythm of breathing (pacemaker). Pons smooths out respiratory rate and influence depth and length of respiration.

Explanation: sana makatulong