Aerobic vs Anaerobic Metabolism

Question 1

Anaerobic metabolism does or does not require oxygen
-uses what
-occurs where
-yields how many ATP

Answer 1

does not require oxygen
utilizes only carbohydrates (glucose)
occurs in the cytoplasm
yields 2 ATP molecules per glucose molecule

Question 2

aerobic metabolism does or does not require oxygen
-uses what as fuel
-occurs where
-yields how many ATP

Answer 2

does require oxygen
utilizes carbohydrates, fats and proteins
occurs in the mitochondria
yields about 36 ATP per molecule of glucose

Question 3

anaerobic metabolism yields how many molecules of ATP

Answer 3

2 ATP

Question 4

aerobic metabolism yields how many molecules of APT

Answer 4

36 ATP

Question 5

Heart
CNS, PNS
skeletal muscle slow twitch fibers
are all what types of cells

Answer 5

aerobic

Question 6

connective tissue cells (bone, cartilage, RBC)
skeletal muscle fast twitch muscles
are all what types of cells

Answer 6

anaerobic

Question 7

What is the gold standard measure for evaluating a person while performing work?

Answer 7

oxygen consumption- VO2

Question 8

What are the equations for measuring VO2

Answer 8

VO2= CO x a-v O2 difference—invasive
VO2=volume of O2 entering the lungs mins volume of O2 leaving the lungs—not invasive use equipment

Question 9

Not capable of performing work soley aerobically
Switch from aerobic to anaerobic

Answer 9

anaerobic threshold

Question 10

When does a typical person reach their anaerobic threshold?

Answer 10

55% of a person max VO2

Question 11

Can anaerobic threshold change with training?

Answer 11

yes increased percentage with training or decrease with detraining

Question 12

Clinically when can you tell someone has reached their anaerobic threshold?

Answer 12

occurs when exercising and the person is having difficulty talking to another
person becomes breathless

Question 13

what is the percentage of oxygen in the air?
what is the percentage of oxygen that is expired?

Answer 13

O2 in air- 21%
O2 expired- 4%

Question 14

What is the problem with measuring VO2 using the equation
VO2=volume of O2 entering/volume of CO2 leaving

Answer 14

does NOT take into consideration persons body weight

Question 15

what is MET in relation to VO2

Answer 15

1 MET = the energy (oxygen) used by the body as you sit quietly, perhaps while talking on the phone or using the phone
1 MET= 3.5 mLO2/kg * min

Question 16

Any activity that burns 3-6 METs is considered a ______activity

Answer 16

moderate intensity

Question 17

any activity that burns >6 METs is considered a ______ activity

Answer 17

vigorous intensity

Question 18

if a person has an AT that is 22 mlO2/kg*min and is asked to do a 3 MET activity is that above or below their AT

Answer 18

below pt should not be breathless
3 METs x 3.5 mlO2/kg* min = 10.5 mlO2/min

Question 19

if a person has an AT of 8 mlo2/kg*min and they are asked to perform a 3 met activity is that above or below their AT

Answer 19

yes above pt will be breathless
3 METs x 3.5 mlO2/kg*min= 10.5

Question 20

what are factors that affect peak VO2 (6)

Answer 20

age
sex
genetics
body composition
endurance training
various diseases that affect oxygen transport (COPD)

Question 21

Social security administration uses the criteria that <18mL/kg*min (or ~5 METs) is considered _____

Answer 21

disabled