That question isn’t correct
Skin acts as a barrier between invaders (pathogens) and your body.
Digestive system defense has enzymes. The enzymes in your stomach, pancreas, and liver help destroy pathogens.
The circulatory system contains immune cells called lymphocytes, which protect the body against antigens (viruses, bacteria, etc. ) that invade the body.
The respiratory system is a layered defense mechanism which relies on components of both the innate and adaptive immune systems to protect the lungs and the rest of the respiratory tract against inhaled microorganisms.
The body’s innate immune system (nervous system), its first line of defense, recognizes infectious microorganisms such as bacteria, and initiates a generalized short-acting response while summoning the body’s adaptive immune cells to mount a sustained and targeted attack.
Answer:
"The muscles of respiration are also called the 'breathing pump muscles', they form a complex arrangement in the form of semirigid bellows around the lungs. All muscles that are attached to the human rib cage have the inherent potential to cause a breathing action. Muscles that helpful in expanding the thoracic cavity are called the inspiratory muscles because they help in inhalation, while those that compress the thoracic cavity".
Explanation:
I hope this helps!
1. Aerobic - exercise that requires the use of oxygen to produce energy
From the syllable 'aer', it signifies that it involves air. Since air contains oxygen which is needed by humans in breathing. Examples are cardiovascular activities like jogging.
2. Anaerobic - exercise that does not require the use of oxygen to metabolize energy
This is the opposite of aerobic. It does not involve oxygen to metabolize energy. Characteristic of this are activities that make you out of breath quickly like lifting weights.
3. ATP (adenosine triphosphate) - an energy molecule produced when oxygen reacts with glucose
In biology, this substance is very important in energy metabolism
4. Lactic acid - a product of anaerobic exercise
Technically, anaerobic exercises form lactate. In the protonated form, this is lactic acid.
