QuestionQuestion 1 of 39 2.6/ 2.6 PointsThe multiple functions of the muscular system are performed by

Question 1 of 39 2.6/ 2.6 Points

The multiple functions of the muscular system are performed by ______________type(s) of muscle:

A.2

B.3

C.4

D.1

Question 2 of 39 2.6/ 2.6 Points

Which of the following is NOT considered a fuel nutrient?

A.carbohydrate

B.fat

C.water

D.protein

Question 3 of 39 2.6/ 2.6 Points

The layer of connective tissue surrounding the outside of the muscle is called:

A.perimysium

B.carbohydrate

C.sarcomysium

D.epimysium

Question 4 of 39 2.6/ 2.6 Points

Protein can supply about 5 to 10% of the total energy needs during:

A.sprinting activities

B.prolonged exercise

C.all types of exercise

D.weightlifting

Question 5 of 39 2.6/ 2.6 Points

The two main components of the nervous system are:

A.the autonomic nervous system and the somatic nervous system

B.the brain and the spinal cord

C.the central nervous system and the peripheral nervous system

D.the efferent and afferent divisions of the nervous system

Question 6 of 39 2.6/ 2.6 Points

The autonomic nervous system can be divided into two functional and anatomical divisions called:

A.sympathetic and unsympathetic

B.sympathetic and parasympathetic

C.afferent and efferent

D.CNS and peripheral

Question 7 of 39 2.6/ 2.6 Points

Using an insulated, airtight chamber with walls containing copper tubing through which water is passed to assess total body energy expenditure is called:

A.direct calorimetery

B.indirect calorimetry

C.open-circuit spirometry

D.closed-circuit spirometry

Question 8 of 39 2.6/ 2.6 Points

The respiratory exchange ratio (RER) is defined as the ratio between the:

A.of CO2 produced and the amount of CO2 consumed during metabolism

B.amount of CO2 produced and the amount of CO2 consumed during metabolism

C.amount of CO2 released and the amount of O2 consumed during metabolism

D.amount of O2 released and the amount of CO2 consumed during metabolism

Question 9 of 39 0.0/ 2.6 Points

The primary function of the cardiovascular system is:

A.thermoregulation

B.immune function

C.ensuring that there is adequate blood flow throughout the circulation to meet the metabolic demand

D.maintenance of acid-base balance and overall body fluid balance

Question 10 of 39 0.0/ 2.6 Points

The heart’s main nutrient blood supply is provided via:

A.the superior and inferior vena cavae

B.the right and left coronary arteries

C.the coronary veins

D.the pulmonary arteries

Question 11 of 39 2.6/ 2.6 Points

At a constant temperature, pressure and volume are inversely related. This is known as _____________ gas law.

A.Boyle’s

B.Henry’s

C.Dalton’s

D.Charles’

Question 12 of 39 2.6/ 2.6 Points

Which of the following laws states that the rate of diffusion through a tissue such as the respiratory membrane is proportional to the surface area and the difference in the partial pressure of gas between the two sides of the tissue?

A.Boyle’s law

B.Dalton’s law

C.Charles’ law

D.Fick’s law

Question 13 of 39 2.6/ 2.6 Points

Pulmonary ventilation is:

A.commonly referred to as breathing, is the process by which air is moved into and out of the lungs.

B.the volume of air available for gas exchange

C.anatomical dead space times respiratory rate

D.is an inactive process involving the femur and the phalanges muscles

Question 14 of 39 2.6/ 2.6 Points

To eject greater volume of blood, the ventricle responds by contracting more forcefully. This is referred to as as the:

A.Diastolic mechanism

B.Frank-Starling mechanism

C.Fick principle

D.cardiovascular drift

Question 15 of 39 2.6/ 2.6 Points

An increase in heart rate that occurs in anticipation of competition is due to:

A.an increase in stimulation of sympathetic nervous system

B.an increase in stimulation of paraympathetic nervous system

C.decrease in stimulation of sympathetic nervous system

D.release of acetylcholine

Question 16 of 39 2.6/ 2.6 Points

Resting Heart Rate:

A.decreases as a result of endurance training

B.increases as a result of endurance training

C.remains the same as a result of resistance training

D.none of the above

Question 17 of 39 0.0/ 2.6 Points

Fatigue hinders performance by

A.decreasing muscular strength

B.decreasing reaction time

C.decreasing movement time

D.All of these are

Question 18 of 39 2.6/ 2.6 Points

A sacomere is:

A.the basic functional unit of a myofibril and the basic contractile unit of muscle.

B.a molecule

C.a thin filament

D.a junction

Question 19 of 39 2.6/ 2.6 Points

Which of the following is in?

A.The heart rate of a trained person is lower at rest and at the same absolute exercise intensity than the heart rate of an untrained person

B.EDV is greater in an aerobically trained person than in an untrained person

C.The Frank-Starling mechanism results in an increase in the force of contraction

D.Stroke volumes are the same for a trained person regardless of body size

Question 20 of 39 0.0/ 2.6 Points

Most research studies that have investigated the effects of exercise training on heart size have been

A.longitudinal training studies

B.cross-sectional studies

C.individual case studies

D.multifaceted studies

Question 21 of 39 0.0/ 2.6 Points

Doppler echocardiography provides

A.one-dimensional views of the heart

B.two-dimensional views of the heart

C.three-dimensional views of the heart

D.measurement of blood flow

Question 22 of 39 2.6/ 2.6 Points

Aerobic training results in which of the following changes in stroke volume?

A.increased stroke volume at rest

B.increased stroke volume at a standardized submaximal rate of work

C.increased stroke volume at maximal rates of work

D.All of these are

Question 23 of 39 2.6/ 2.6 Points

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