Energy Systems, Exercise Physiology #2

Front 1

What are the three metabolic pathways in the human body?

Back 1

1. immediate energy system
2. anaerobic glycolitic syster
3. oxidative system

Front 2

Definition: Metabolic pathway

Back 2

series of chemical reactions with in a cell that release energy.

Front 3

Definition: substrate

Back 3

substance acted upon by an enzyme

Front 4

Definition: Rate of ATP production

Back 4

how quickly can the metabolic pathway start producing ATP

Front 5

Definition: Duration at max pace

Back 5

length of time of metabolic pathway

Front 6

Definition: Limiting factors

Back 6

variables that slow the rate of ATP production in the metabolic pathway

Front 7

Definition: Location

Back 7

where the metabolic pathway functions with in the cell

Front 8

Characteristics of the Immediate Energy system
substrates, rate, duration, limiting factors

Back 8

•Substrates: ATP & PCr
•Rate of reaction: "very quick"
•Duration at maximal pace: 0-30 sec.
•Limiting factors: PCr depletion

Front 9

Characteristics of Glycolytic system
substrates, rate, duration, limiting factors, location

Back 9

•Substrates: Gluclose/glycogen
•Rate of reaction: "quick"
•Duration at max pace: 30-180 sec.
•Limiting factors: glycogen depletion, lactate accumulation
•Location: cytoplasm/sarcoplasm

Front 10

What does glycolytic system create?

Back 10

2 pyruvate and 2 ATP

Front 11

Where does lactact come from?`

Back 11

Converted from pyruvate. then converted back to carbohydrates.

Front 12

Oxidative system also known as...

Back 12

TCA system, Krebs cycle, glycolysis.

Front 13

Characteristics of the oxidative system
substrates, rate, duration, limiting factors, location

Back 13

•Substrates: glycogen/gluclose, free fatty acids, amino acids
•Rate of reaction: "slower"
•Duration at maximal pace: >3 mins
•Limiting factors: glycogen depletion
•Location: mitochondria

Front 14

Election transport chain
characteristics, substrates, limiting factors, location

Back 14

substrates: nadh and fadh
limiting factors: nadh and fadh availability
location: mitochondrial membrane

Front 15

How does the oxidative system work with the electron transport chain?

Back 15

oxidative system creates 1 fadh which electron transport chain turns into 36 atp. through 4 complexes, creates a lot of ATP

Front 16

Fuel source utilization, two factors

Back 16

two factors determine fuel source utilzation. Intensity: how strenuous the activity.
Duration: length of the activity

Front 17

Fuel use during exercise.
intensities

Back 17

low intensity: fat/plasma
medium intensity: muscle/plasma
high intensity: muscle/carbohydrates.

usually rely on carbohydrates.

Front 18

Muscle fiber anatomy

Back 18

Motor unit->muscle fiber->sarcomere->actin and myosin

Motor unit is muscle fiber and motor neuron

Front 19

Muscle fiber types

Back 19

Type 1-slow
Type 2 a- intermediate
Type 2 b- fast

Front 20

Tye 1 muscle fiber

Back 20

slow twitch
Its easier for type 2 to become type 1