Quiz Questions

Question 1

Muscle Cramping is usually caused by potassium deficiency

Answer 1

false

Question 2

Resting RER is 1.0

Answer 2

false

Question 3

Which of the following occurs at the lactate threshold

Answer 3

lack of oxygen in muscle cell
Recruitments of fast twitch fibers
reduced rate of removal of lactate acid from blood
ALL OF THE ABOVE

Question 4

The term oxygen deficit refers to the

Answer 4

lag in oxygen consumption at the beginning of exerceise

Question 5

A 30 min jog will generally result in a greater oxygen debt than a 30 min walk

Answer 5

true

Question 6

During submaximal exercise, the flat portion of the oxygen consumption curve is usually called

Answer 6

steady state

Question 7

lactate threshold will be attained at a higher relative intensity in a trained person when compared to an untrained person

Answer 7

true

Question 8

During an incremental exercise protocol, the region where oxygen consumption plateaus despite an increase in workload is called the maximal aerobic capacity or maximal oxygen consumption

Answer 8

true

Question 9

If james and his brother (Whos 3 years older and 50lb heavier) both have 4.5L/min, they are equally aerobically fit

Answer 9

false

Question 10

Delayed onset muscle soreness (DOMS) is associated with inflammation but not actual structural damage to the muscle

Answer 10

false

Question 11

The fact that an increase in end-diastolic volume increases stroke volume is an illustration of

Answer 11

The starling law of the heart

Question 12

Veins always carry deoxygenated blood

Answer 12

false

Question 13

The _____ represents ventricular repolarization on an EKG

Answer 13

T wave

Question 14

The majority of carbon dioxide in the blood is transported combined to hemoglobin

Answer 14

false

Question 15

The unloading portion of the oxyhemoglobin dissociation curve has a steeper slope than the loading portion

Answer 15

true

Question 16

At rest, the majority of cardiac output is directed to the liver and kidneys

Answer 16

true

Question 17

The sinoatrial node is responsible for delaying the action potential before it gets relayed down to the lower half of the heart

Answer 17

false

Question 18

The process of gases moving across the respiratory membrane and being exchanged bw the alveoli and the pulmonary capillary blood is called pulmonary diffusion

Answer 18

true

Question 19

Increases in acidity and temperature

Answer 19

Decrease hemoglobin’s effectiveness to bind to oxygen

Question 20

Carbon dioxide and oxygen directly compete with each other for hemoglobin binding

Answer 20

false