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
An increase in mechanical efficiency is a possible explanation for
A.a decrease in resting heart rate after endurance training
B.a higher oxygen consumption rate at a given submaximal exercise work load after training
C.a lower oxygen consumption at a given submaximal exercise workload after training
D.a higher maximal oxygen consumption
Question 24 of 39 0.0/ 2.6 Points
Much of the increase in blood volume during the first two weeks of an endurance training program results from increased volume of red blood cells.
A. True
B. False
Answer Key:
Question 25 of 39 2.6/ 2.6 Points
Increases in resting metabolic rate after endurance training are most likely for people under 40 years of age.
A. True
B. False
Answer Key:
Question 26 of 39 2.6/ 2.6 Points
Anaerobic 30-second training bouts lead to an increase in
A.succinate dehydrogenase
B.phosphofructokinase
C.citrate synthase
D.All of these are
Question 27 of 39 2.6/ 2.6 Points
Sixty- and seventy-year-old men and women are not able to increase their maximal oxygen uptake with endurance training.
A. True
B. False
Question 28 of 39 2.6/ 2.6 Points
The ability of the heart to change its force of contraction and therefore stroke volume in response to changes in venous return is called:
A.Dalton’s law
B.The Frank-Starling mechanism
C.Fick’s law
D.Poisseulle’s law
Question 29 of 39 2.6/ 2.6 Points
Hemoglobin is one of the substances diluted by plasma for expansion
A. True
B. False
Question 30 of 39 2.6/ 2.6 Points
Muscle hypertrophy refers to:
A.immobilization of a muscle
B.a decrease in muscle size
C.an increase in muscle size
D.an increase in number of muscle fibers
Question 31 of 39 2.6/ 2.6 Points
A decrease in the size of individual muscle fibers is referred to as:
A.hypertrophy
B.atrophy
C.hyperplasia
D.hypoplasia
Question 32 of 39 2.6/ 2.6 Points
Muscle atrophy may be defined as:
A.an increase in muscular strength that occurs without resistance training
B.a loss of muscle tone
C.a loss of muscular coordination caused by decreased neuromuscular activation
D.a wasting away (decrease) in muscle size
Question 33 of 39 0.0/ 2.6 Points
Muscular endurance is highly related to the development of:
A.aerobic capacity
B.muscular strength and anaerobic power
C.leg speed and anaerobic power
D.cardiorespiratory systems’ ability to maintain oxygen delivery to working muscles during prolonged bouts of exercise
Question 34 of 39 0.0/ 2.6 Points
Which of the following sports would be least dependent on muscular endurance?
A.boxing
B.weight lifter
C.distance runner
Question 35 of 39 2.6/ 2.6 Points
Aldosterone is responsible for maintaining appropriate sodium levels.
A. True
B. False
Question 36 of 39 2.6/ 2.6 Points
Thyroxine regulates sodium levels.
A. True
B. False
Question 37 of 39 2.6/ 2.6 Points
Resistance Training and Gains in Muscular Fitness
Absolute strength gains are typically greatest in men.
True
False
Question 38 of 39 2.6/ 2.6 Points
The body’s heating and cooling mechanisms are activated by the hypothalamus.
A. True
B. False
Answer Key:
Question 39 of 39 1.2/ 1.2 Points
The amount of energy expended for different activities varies with the intensity and type of exercise
A. True
B. False