test 2 cards 4

Question 1

systole is what in the cardiac cycle?

Answer 1

the contraction phase of the heart

Question 2

what is a pacemaker cell?

Answer 2

a specialized cardiac cell found in the SA node that acts as the hearts rhythm of pumpoing blood.

Question 3

what is metabolic rate?

Answer 3

the overall rate of energy consumption by an individual

Question 4

what is a basal metabolic rate?

Answer 4

the rate at which an animal consumes oxygen while at rest.

Question 5

what is mass-specific basal metabloic rate

Answer 5

used to compare BMR’s among species

Question 6

at the onset of activitgy atp in muscles is obtained quickly by hydrolysis of the phosphocreatine and then what?

Answer 6

anerobic glycolysis

Question 7

an anerobic metabolism takes over after what stops?

Answer 7

anerobic glycolysis

Question 8

when anerobic metabolism takes over what doe sit do?

Answer 8

increases consumption of 02 and levels off that at a higher level.

Question 9

T/F metabolic rate increases at a 3/4 power of body mass.

Answer 9

T