Podcast
Questions and Answers
What is the primary focus of bioenergetics?
What is the primary focus of bioenergetics?
- The study of psychological effects of exercises.
- The study of energy transfer through chemical reactions in living tissues. (correct)
- The study of body composition.
- The study of the skeletal system.
What is the role of enzymes in chemical reactions?
What is the role of enzymes in chemical reactions?
- To decrease the rate of chemical reactions.
- To increase the rate of chemical reactions. (correct)
- To halt chemical reactions.
- To change the type of chemical reactions.
What process does 'catabolism' refer to?
What process does 'catabolism' refer to?
- The storage of molecules.
- The breakdown of molecules during exercise. (correct)
- The synthesis of molecules.
- The transport of molecules.
Where is glycogen primarily stored in the body?
Where is glycogen primarily stored in the body?
What is the function of Myosin ATPase?
What is the function of Myosin ATPase?
Which type of muscle fibers are best suited for prolonged periods of exercise?
Which type of muscle fibers are best suited for prolonged periods of exercise?
What energy system supplies ATP for a short amount of time?
What energy system supplies ATP for a short amount of time?
What process describes the breakdown of glucose to form 2 pyruvate?
What process describes the breakdown of glucose to form 2 pyruvate?
In the context of the electron transport chain (ETC), what is being oxidized?
In the context of the electron transport chain (ETC), what is being oxidized?
What does the Respiratory Exchange Ratio (RER) represent?
What does the Respiratory Exchange Ratio (RER) represent?
Which of the following best describes the role of pyruvate dehydrogenase (PDH) in carbohydrate oxidation?
Which of the following best describes the role of pyruvate dehydrogenase (PDH) in carbohydrate oxidation?
What is the primary function of the 'GLUT' transporter during exercise?
What is the primary function of the 'GLUT' transporter during exercise?
During the cardiac cycle, what event is directly associated with the 'QRS complex' observed on an electrocardiogram (ECG)?
During the cardiac cycle, what event is directly associated with the 'QRS complex' observed on an electrocardiogram (ECG)?
How does increased sympathetic nervous system (SNS) activity primarily affect heart rate?
How does increased sympathetic nervous system (SNS) activity primarily affect heart rate?
Which of the following adaptations would most likely result from chronic endurance training?
Which of the following adaptations would most likely result from chronic endurance training?
In the context of oxygen transport, what is the significance of myoglobin's higher affinity for oxygen compared to hemoglobin?
In the context of oxygen transport, what is the significance of myoglobin's higher affinity for oxygen compared to hemoglobin?
What is the primary role of hormone-sensitive lipase (HSL)?
What is the primary role of hormone-sensitive lipase (HSL)?
What occurs during the isovolumetric contraction phase of the cardiac cycle?
What occurs during the isovolumetric contraction phase of the cardiac cycle?
What is the likely effect of metabolic inhibition (build up of H+) on phosphofructokinase (PFK) activity?
What is the likely effect of metabolic inhibition (build up of H+) on phosphofructokinase (PFK) activity?
How does creatine supplementation theoretically enhance energy availability for short bursts of intense exercise?
How does creatine supplementation theoretically enhance energy availability for short bursts of intense exercise?
Flashcards
Bioenergetics
Bioenergetics
Study of energy transfer via chemical reactions in living tissues.
Enzymes
Enzymes
Increase the rate of chemical reactions; biological catalyst.
Modulator
Modulator
Controls breakdown or inhibits activity when not needed.
Metabolism
Metabolism
Signup and view all the flashcards
Catabolism
Catabolism
Signup and view all the flashcards
Anabolism
Anabolism
Signup and view all the flashcards
Phosphagen system
Phosphagen system
Signup and view all the flashcards
Glycolytic system
Glycolytic system
Signup and view all the flashcards
Oxidative System
Oxidative System
Signup and view all the flashcards
Phosphofructokinase (PFK)
Phosphofructokinase (PFK)
Signup and view all the flashcards
Longitudinal research
Longitudinal research
Signup and view all the flashcards
Cross-sectional research
Cross-sectional research
Signup and view all the flashcards
Acute exercise responses
Acute exercise responses
Signup and view all the flashcards
Chronic exercise responses
Chronic exercise responses
Signup and view all the flashcards
Product Formation
Product Formation
Signup and view all the flashcards
Carbohydrates
Carbohydrates
Signup and view all the flashcards
Lipids
Lipids
Signup and view all the flashcards
Skeletal muscle
Skeletal muscle
Signup and view all the flashcards
Liver
Liver
Signup and view all the flashcards
Adipose tissue
Adipose tissue
Signup and view all the flashcards
Study Notes
Module 5 (continued)
-
Purkinje fibers stimulate ventricular contraction which allows ejection of blood from the heart and controls the heartbeat
-
The Electrocardiogram (ECG) records electrical activity in heart
- Atrial depolarization: an electric charge travels from the SA node through the atria to the AV node, and this occurs just before the atrial contraction
- Ventricular depolarization: an electric charge spreads through the fibres and ventricles at the same time
- Ventricular repolarization: the end of ventricular contraction
- Ventricular repolarization: the continuation of repolarization
- PR interval includes AV delay
- Ventricular depolarization & repolarization occurs
-
The cardiac cycle is the mechanical and electrical events that occur between successive heartbeats and occurs from one systole to another
-
Systole is the contraction phase where ventricles contract and eject blood from the heart
-
Diastole is the relaxation phase where blood flows in chambers
-
Ventricular filling
-
Isovolumetric contraction: here, no change occurs in blood volume due to valves being shut
-
Ventricular ejection
-
Isovolumetric relaxation: all valves are shut volume does not change
Ventricular Changes
-
Phase 1 (Ventricular Filling): atria pressure is higher than the valves
-
Phase 2: Ventricular pressure is higher than atrial pressure
-
The atrioventricular valve closes, thus hearts walls contract
-
Phase 3: Valves Open
-
The semilunar valve opens and blood ejects from the heart
-
pressure decreases when enough blood has been injected
-
Phase 4: Semilunar valve closes and the vent volume is lower than in the aorta.
-
End-diastolic volume is the volume of fluid in ventricles at the end of this process
-
Stroke volume occurs when volume of blood is pumped per beat
-
Ejection fraction is the volume of blood that is pumped in connection to the amount of blood in the heart before contraction
-
End-Systolic Volume the volume of blood in heart at the end of the volume
-
"Volume Pump" is when muscles contracts and squeezes fluids back,
-
Frank Starling "Volume" is when the increased volume causes greater force and stretches the muscle while stretched, causing greater increased volume
-
Cardiac output
-
Chronotropic is rate of contract
-
Maximal "Volume" achieves the highest volume with all out force
-
The genetics and training influence "volume"
-
The Pacemaker/ inherent controls H/R
-
Circulating NE and EPI- influences VA
-
Cardiac accelerator is up regulating
-
Vagus nerve is down regulating
-
Vasculature vessels that transports to parts
-
Arteries and "
-
Arterioles and the greatest
-
Capillaries and
-
Veins volume
-
pressure/resistance
-
(volume volume)/ diameter volume
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
