u11 exercise physiology

Question 1

main fuel of low/moderate exercise vs high vs endurance

Answer 1

fat
carbs
start w/ carb then switch to fat (60 min in)

Question 2

atp sources: phosphocretine (pcr)

Answer 2

lasts 15s
used during HIIT exercises

Question 3

atp sources: aerobic resp

Answer 3

glycolysis, krebs
slow but makes 32 atp per gluc
needs 02

Question 4

atp sources: anerobic resp

Answer 4

fast but only makes 2 atp per glu
used during short intense bursts (like sprinting to class)

Question 5

what kicks off cardiovascular resp

Answer 5

proprioceptors + stretch receptors

what happens is down psns, up sns, up hr and contractility (rmbr sns means inc hr)

Question 6

exercise in diastolic and systolic

Answer 6

inc systolic, only very slight inc diastolic

up map (meaning inc CO)

even though down tpr CO still high since vasodi (due to sweating)

Question 7

gases in exercise

Answer 7

p02= stay steady
pco2= slight decrease (due to hypervent)
ph= decrease (more acidic due to lactic acid buildup)

venous pco2 (opp so inc)
venous o2 dec

Question 8

o2 consumption untrained vs athelete

Answer 8

rest= 250

3600ml/min
51ml/min

Question 9

extra o2 used after exercise

Answer 9

replenishes PCR, ATP, GLYCOGEN, O2 STORES
clears lactate

Question 10

inc plasma [] during exercise by:
dec plasma [] during exercise by:

Answer 10

GH, E, VASOPRESSIN, CORTISOL, GLUCOGEN

INSULIN

Question 11

ALDOISTERONE and sports drinks

Answer 11

SAVE Na LOSS BUT INC IN K LOSS
risk= hypo

sports drinks help replace both na and k

Question 12

acclimitization

Answer 12

sweat earlier (more V)
less salt loss (more aldosterone)

Question 13

LDL-C
HDL-C

Answer 13

BAD CHOLES
GOOD CHOLES

Question 14

3 THEORIES WHY BARORECEPTOR DONT LOWER MAP

Answer 14

HIGHER SET POINTS
BRAIN BLOCKS SIGNALS
MUSCLE CHEMORECEPTORS SUPRESSES REFLEX