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Flashcards in EPT3 Deck (40)
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1

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

2

These are known as resistance vessels:

Arterioles

3

The Peripheral Nervous System acts through the ___

Vagus Nerve

4

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

Increase

5

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")

6

Functions of blood that are important during exercise include:

(A, C, and D only)
-Transportation
-Temperature regulation
-Acid-Base Balance

7

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

Vagal tone

8

Blood doping will ___ the viscosity of the blood

Increase

9

Cardiac output is calculated as:

Q = HR x SV

10

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

11

Endurance training should aim to improve:

(A and B only)
-VO2max
-Lactate threshold

12

A resting heart rate below 60 bpm is termed ___

Bradycardia

13

Premature ventricular contractions are characterized by a ___

Wide QRS complex

14

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

Rate pressure product

15

Respiratory exchange ratio ___ due to ___ with endurance training

Decreases; Increased utilization of free fatty acids

16

Blood flow to exercising muscle increases due to ___

(All the above)
-Increased capillarization of trained muscle
-Increased mitochondrial density
-Increased enzyme activity

17

Total blood volume increases with endurance training due to:

(A and B are correct)
-Increases in hemoglobin
-Total number of red blood cells increases

18

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

Stroke Volume

19

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

Cardiovascular drift

20

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

Catecholamines

21

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

True

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

False

23

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

False

24

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

False

25

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

True

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.

True

27

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

False

28

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

False

29

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

True

30

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

True