Ex. Phys. Unit 3

Question 1

FEV1/FVC

Answer 1

the percentage of FVC expelled in one second

Question 2

Hyperventilation

Answer 2

increase in pulmonary ventilation that exceeds the oxygen needs of metabolism

Question 3

Partial-Pressure

Answer 3

pressure exerted by an individual gas

Question 4

Minute Ventilation

Answer 4

volume of air breathed each minute

Question 5

Forced Vital Capacity

Answer 5

total air volume moved in one breath from full inspiration to maximum expiration

Question 6

OBLA

Answer 6

exercise intensity or oxygen uptake at which blood lactate begins to rise above a 4.0 mm/L baseline

Question 7

Mechanoreceptor

Answer 7

peripheral receptor that responds to movement, distortion, or mechanical pressure

Question 8

Ventilatory Threshold

Answer 8

the exercise intensity at which pulmonary ventilation increases disproportionately with oxygen uptake during graded exercise testing

Question 9

CHemoreceptor

Answer 9

any cell that responds to a change in chemical mill eau with a nerve impulse

Question 10

Hemoglobin

Answer 10

iron-containing respiratory protein of red blood cells which transports oxygen from lungs to tissues

Question 11

Carbonic Acid

Answer 11

acid which is formed from C02 and H20 (H2C30)

Question 12

Anaerobic

Answer 12

increased pulmonary ventilation to match oxygen needs

Question 13

Bicarbonate

Answer 13

the ionized form of carbonic acid which carries the major portion of C02

Question 14

Myoglobin

Answer 14

iron-containing protein compound in skeletal and cardiac muscle that combines reversibly with oxygen

Question 15

Rate Pressure Product

Answer 15

estimate of myocardial work (SBP x HR)

Question 16

Angina pectoris

Answer 16

impaired coronary blood flow

Question 17

Tachycardia

Answer 17

increased HR contractility

Question 18

Bradycardia

Answer 18

decreased HR contractility

Question 19

Preload

Answer 19

increased diastolic filling before systole occurs

Question 20

Afterload

Answer 20

pressure required to open the aortic semilunar valve

Question 21

Catecholamines

Answer 21

neural hormones that increase myocardial contraction (epinephrine and norepinephrine)

Question 22

Concentric Hypertrophy

Answer 22

inward thickening of the walls of the heart

Question 23

Eccentric Hypertrophy

Answer 23

outward growth of cardiac muscle

Question 24

Heart Rate Reserve

Answer 24

the difference between resting heart rate (HRrest) and maximum heart rate (HRmax).