exam 2 test corrections

Question 1

select the statement below that occurs during the activation stage of fat oxidation

Answer 1

the enzyme ACS adds a COA the fatty acid before getting into the mitochondria

Question 2

select the causes of high-level endurance athletes having an HR below that of vagal tone

Answer 2

-higher HR
-larger left ventricular chamber
-higher SV

Question 3

how much ATP do we get out of the PCR system

Answer 3

1 ATP for every 1 PCR

Question 4

select the statements below that are true in terms of PO2 concentration comparisons

Answer 4

-systemic arterial blood is higher than systemic venous blood
-pulmonary vein blood is higher than systemic venous blood
-pulmonary vein

Question 5

select those items below that are the causes of excess energy associated with EPOC

Answer 5

lactic acid oxidation
redistributing ions
elevated hormones

Question 6

true or false for the peptide having more cell membrane receptors will create greater hormone action

Answer 6

false

Question 7

select the answer that best describes the P wave

Answer 7

atrial cells have K and are gaining more NA in the ICF

Question 8

true and false the parasympathetic nervous system creates vagal tone by creating hyperpolarization within the heart

Answer 8

true

Question 9

select the hormones that help MTATO for exercise

Answer 9

cortisol
epinephrine
nore epinephrine
growth hormone

Question 10

place the following in order that best describe cardiovascular system blood flow beginning from pulmonary venous return to the heart

Answer 10

1. left atria
2. left ventricle
3. systemic atrial
4. systemic venous
5. right atria
6. right ventricle
7. pulmonary artery
   8.lung

Question 11

select the statement below that correctly describes what is happening during unloading phase of the HB dissociation curve

Answer 11

small changes in Hb saturation with big changes in PO@
usually high levels of Hb saturation

Question 12

true or false; Lt will come shortly after VT

Answer 12

false

Question 13

select the hormone that is the only one that causes protienolysis to happen

Answer 13

cortisol

Question 14

from the list below choose the possible products from the krebs cycle

Answer 14

ATP
NADH
FADH

Question 15

select the statment below that is true

Answer 15

at rest, and in the capillaries of the lungs, the CAH chemical reaction is producing more CO2 and H20

Question 16

select what is occurring during ventricular systole

Answer 16

ventricular volume decreases
ventricular pressure rises
atrial volume increases

Question 17

select the statments below that are true regarding heart contractility

Answer 17

-the AV bundle splits into L and R bundle branches
-intercalated disks are physical connection that allow the heart atria to contract as a unit
-the SA node is delayed to allow for ventricular filling

Question 18

at muscle O2 extraction ____venous PO2___causing A-V O2 difference to ___

Answer 18

decrease, increase, decrease

Question 19

which of the following terms describes the rate of energy expenditure at rest to sustain life which must be meausred after the has rest for 8 hours and fasted

Answer 19

basal metabolic rate

Question 20

select the statement that is true for gas exchange in the lungs

Answer 20

the is a difference of VO2 out of the alveoli into the blood