EPT3 Flashcards
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Place the following events in sequence for a normal EKG: (1) Purkinje fibers, (2) SA node, (3) bundle of His, (4) AV node
2, 4, 3, 1
These are known as resistance vessels:
Arterioles
The Peripheral Nervous System acts through the ___
Vagus Nerve
Supine exercises lead to a ___ in venous return to the heart
Increase
Venous return is aided during exercise by which of the following?
(All the above)
- One way valves
- Muscular contractions around veins (i.e “muscle pump)
- Pressure changes in the abdominal and thoracic cavities (i.e “respiratory pump”)
Functions of blood that are important during exercise include:
(A, C, and D only)
- Transportation
- Temperature regulation
- Acid-Base Balance
As a result of training, a shorter recovery heart rate is due to an increased ___
Vagal tone
Blood doping will ___ the viscosity of the blood
Increase
Cardiac output is calculated as:
Q = HR x SV
With endurance training, we see adaptations in the muscle including:
(B, C, and D are correct)
- Increased myoglobin
- Increased number of mitochondria
- Increased size of mitochondria
Endurance training should aim to improve:
(A and B only)
- VO2max
- Lactate threshold
A resting heart rate below 60 bpm is termed ___
Bradycardia
Premature ventricular contractions are characterized by a ___
Wide QRS complex
The ___ is an estimation of the heart’s oxygen demand
Rate pressure product
Respiratory exchange ratio ___ due to ___ with endurance training
Decreases; Increased utilization of free fatty acids
Blood flow to exercising muscle increases due to ___
(All the above)
- Increased capillarization of trained muscle
- Increased mitochondrial density
- Increased enzyme activity
Total blood volume increases with endurance training due to:
(A and B are correct)
- Increases in hemoglobin
- Total number of red blood cells increases
End-diastolic volume and end-systolic volume are used to calculate which variable?
Stroke Volume
A gradual decrease in stroke volume while seeing a subsequent increase in heart rate describes:
Cardiovascular drift
Sympathetic nervous system triggers he release of the ___, which increases heart contractility.
Catecholamines
Normal resting heart rate is between 60-100 bpm and a HR above 100 is called tachycardia
True
According to the 2018 Physical Activity Guidelines, adults need 150 minutes of moderate intensity physical activity per week in a minimum of 10 minute bouts
False
Changes in blood flow resistance result from contraction/relaxation of the capillaries
False
High pressure is in the venous side of blood flow because it is closer to the driving force and closer to the heart
False
During exercise, stroke volume increases due to a decrease in the total peripheral resistance.
True
The Frank Starling mechanism explains the increased stroke volume from an increased amount of stretch of the ventricles, which leads to a more forceful ventricular contraction.
True
During submaximal exercise, the cardiac output increases as a result of increased stroke volume
False
Lactate threshold will decrease as a result of endurance training because of the improved ability to transport oxygen
False
The number of interval sets and repetitions will depend on the purpose of the training program and fitness level of the individual
True
The higher the intensity during a high-intensity, continuous duration type of activity, the shorter duration of the activity
True
Ventricular tachycardia is a serious arrhythmia and is characterized by an uncoordinated contractions of the ventricles
False
Atrial flutter is characterized by an uncoordinated contraction of the atria
False
Baroreceptors are sensitive to changes in blood pressure by decreasing PNS activity, thus increasing heart rate and blood pressure
True
Blood picks up heat from exercising muscle and is dissipated at the skin.
True
During exercise, both systolic and diastolic blood pressures increase.
False
Blood pressure responds in a similar fashion to both resistance and aerobic exercise
False
As a result of a 6 month training program, hypertensive individuals may see a reductions in blood pressure.
True
Monitoring recovery heart rate is one way a coach can identify players for important periods in a game.
True
30 minutes of aerobic activity is enough to see weight loss or maintenance of weight loss.
False
Only aerobic activities/exercises can be performed during circuit training.
False
