Lesson 10: Exercise and respiration Flashcards
What is breathing rate?
Breathing rate is the number of breaths someone takes in a certain time.
How do you calculate breathing rate?
Breathing rate = number of breaths/ time
Why does your heart rate increase when you exercise?
Heart rate increase: more blood can transport glucose and oxygen to muscles.
Why does the strength of contraction of the heart muslce increase when you exercise?
Strength of contraction: Pump larger volume of blood to muscle cells for respiration.
Why does the breathing rate increase when you exercise?
Breathing rate: mantain concentration gradients and get more oxygen in for respiration and carbon dioxide out.
More carbon dioxide being released from blood so mantains concentration gradient between cell and bloodstream
Why does the breathing depth increase when you exercise?
Breathing depth: mantain concentration gradients and get more oxygen in for respiration and carbon dioxide out.
Why does blood flow to muscles increase when you exercise?
Muscles need a bigger supply of oxygen/ glucose so they can respire and release more energy.
