EPT3

Question 1

Place the following events in sequence for a normal EKG: (1) Purkinje fibers, (2) SA node, (3) bundle of His, (4) AV node

Answer 1

2, 4, 3, 1

Question 2

These are known as resistance vessels:

Answer 2

Arterioles

Question 3

The Peripheral Nervous System acts through the ___

Answer 3

Vagus Nerve

Question 4

Supine exercises lead to a ___ in venous return to the heart

Answer 4

Increase

Question 5

Venous return is aided during exercise by which of the following?

Answer 5

(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”)

Question 6

Functions of blood that are important during exercise include:

Answer 6

(A, C, and D only)

• Transportation
• Temperature regulation
• Acid-Base Balance

Question 7

As a result of training, a shorter recovery heart rate is due to an increased ___

Answer 7

Vagal tone

Question 8

Blood doping will ___ the viscosity of the blood

Answer 8

Increase

Question 9

Cardiac output is calculated as:

Answer 9

Q = HR x SV

Question 10

With endurance training, we see adaptations in the muscle including:

Answer 10

(B, C, and D are correct)

• Increased myoglobin
• Increased number of mitochondria
• Increased size of mitochondria

Question 11

Endurance training should aim to improve:

Answer 11

(A and B only)

• VO2max
• Lactate threshold

Question 12

A resting heart rate below 60 bpm is termed ___

Answer 12

Bradycardia

Question 13

Premature ventricular contractions are characterized by a ___

Answer 13

Wide QRS complex

Question 14

The ___ is an estimation of the heart’s oxygen demand

Answer 14

Rate pressure product

Question 15

Respiratory exchange ratio ___ due to ___ with endurance training

Answer 15

Decreases; Increased utilization of free fatty acids

Question 16

Blood flow to exercising muscle increases due to ___

Answer 16

(All the above)

• Increased capillarization of trained muscle
• Increased mitochondrial density
• Increased enzyme activity

Question 17

Total blood volume increases with endurance training due to:

Answer 17

(A and B are correct)

• Increases in hemoglobin
• Total number of red blood cells increases

Question 18

End-diastolic volume and end-systolic volume are used to calculate which variable?

Answer 18

Stroke Volume

Question 19

A gradual decrease in stroke volume while seeing a subsequent increase in heart rate describes:

Answer 19

Cardiovascular drift

Question 20

Sympathetic nervous system triggers he release of the ___, which increases heart contractility.

Answer 20

Catecholamines

Question 21

Normal resting heart rate is between 60-100 bpm and a HR above 100 is called tachycardia

Answer 21

True

Question 22

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

Answer 22

False

Question 23

Changes in blood flow resistance result from contraction/relaxation of the capillaries

Answer 23

False

Question 24

High pressure is in the venous side of blood flow because it is closer to the driving force and closer to the heart

Answer 24

False

Question 25

During exercise, stroke volume increases due to a decrease in the total peripheral resistance.

Answer 25

True

Question 26

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.

Answer 26

True

Question 27

During submaximal exercise, the cardiac output increases as a result of increased stroke volume

Answer 27

False

Question 28

Lactate threshold will decrease as a result of endurance training because of the improved ability to transport oxygen

Answer 28

False

Question 29

The number of interval sets and repetitions will depend on the purpose of the training program and fitness level of the individual

Answer 29

True

Question 30

The higher the intensity during a high-intensity, continuous duration type of activity, the shorter duration of the activity

Answer 30

True

Question 31

Ventricular tachycardia is a serious arrhythmia and is characterized by an uncoordinated contractions of the ventricles

Answer 31

False

Question 32

Atrial flutter is characterized by an uncoordinated contraction of the atria

Answer 32

False

Question 33

Baroreceptors are sensitive to changes in blood pressure by decreasing PNS activity, thus increasing heart rate and blood pressure

Answer 33

True

Question 34

Blood picks up heat from exercising muscle and is dissipated at the skin.

Answer 34

True

Question 35

During exercise, both systolic and diastolic blood pressures increase.

Answer 35

False

Question 36

Blood pressure responds in a similar fashion to both resistance and aerobic exercise

Answer 36

False

Question 37

As a result of a 6 month training program, hypertensive individuals may see a reductions in blood pressure.

Answer 37

True

Question 38

Monitoring recovery heart rate is one way a coach can identify players for important periods in a game.

Answer 38

True

Question 39

30 minutes of aerobic activity is enough to see weight loss or maintenance of weight loss.

Answer 39

False

Question 40

Only aerobic activities/exercises can be performed during circuit training.

Answer 40

False