F- quiz 8 aerobic exercise physiology

What are the 3 steps of cellular respiration?

1. Glycolysis

2. Krebs Cycle

3. Electron Transport Chain

What does glycolysis do?

breaks down glucose into two molecules of pyruvate

What is pyruvate?

high energy molecules

Does glycolysis require oxygen?

no

What is the Krebs cycle?

breakdown of pyruvate into energy

What is the energy stored as after the krebs cycle?

stored as electrons in NADH and FADH2

Does the Krebs cycle require oxygen?

yes

What is electron transport?

energy from electrons used to make ATP

Does electron transport require oxygen?

yes, it is essential (final electron acceptor)

Without oxygen cells under go _______.

ANAerobic repiration

What kind of exercises are ANAerobic?

-varies with each person-

your breathing can NOT catch up with the O2 being used

What is produced in ANAerobic respiration?

2 ATP

Is ANAerobic respiration efficient for humans?

no

What are the energy phases muscle cells use when exercising?

immediate energy, short-term energy, long-term energy, and excess post-exercise consumption (EPOC)

What kind of respiration does immediate energy use?

aerobic

Immediate energy is when energy is?

already available to the cell

How long does immediate energy last for heavy activity?

6-10 sec

How long does immediate energy last for lighter activity?

about 1 min

When does short term energy start?

after one min of immediate energy

What kind of respiration does short term energy use?

ANAerobic

What is happening in short term energy?

lungs are not getting enough O2 to muscles

How long does short term energy last?

30-40 sec

What kind of respiration does long term energy use?

Aerobic

During long term energy the lungs are?

"catching up"

How long does long term energy last?

continues as long as demand for O2 can be met or until muscles fatigue

How does the body and skin react during long term energy?

the temperature of them begin to rise

What happens to respiration in long term energy?

increased

How is your breathing in long term energy?

deeper more often breath because your breathing rate is increased

When does Excess Post Exercise Consumption (EPOC) happen?

after (post) workout

What is going on during EPOC?

replenishing spent ATP and "oxygen debt"

How are you breathing during EPOC?

heavy breathing due to an increased need for O2

When using the BIOPAC, what do we measure?

heart rate, breathing rate, airflow and skin temp

As exercise continues, what happens to the ECG?

increases

As exercise continues, what happens to the heart rate?

increases

As exercise continues, what happens to the breathing rate?

increases

As exercise continues, what happens to the skin temperature?

mine stay the same

As exercise continues, what happens to the ventilation depth?

increases

What did you notice about the measurements post excersise?

Heart rate, breathing rate and airflow decrease back to resting conditions

Describe the temperature changes before and after sweating began?

before sweating skin temp rises, after sweating skin temp decreases

When you are jogging, your leg muscles are working so the body sends blood, O2 and nutrients to the legs meaning..

the temperature of your legs will increase , but we were measuring the temp of our finger so it cooled down

How effective is sweating as a cooling mechanism? Think about evaporative cooling. Why do we sweat?

Very effective because The body produces water with a high heat evaporation (sweat) and the body brings blood (has heat) to the integument

What are the two mammals that sweat?

humans and horses