EXS 411 Exam 2 | UPDATED Questions with 100% Verified Answers
Question:
cardiorespiratory fitness (CRF)
Answer:
the ability of the circulatory and respiratory systems to supply oxygen to the muscles to
perform dynamic physical activity
ex: aerobic exercise
individuals who regularly perform mod-vig PA have lower risk of CVD than sedentary
individuals
Question:
why is it important to assess CRF?
Answer:
because of its relationship with CVD risk
athletes = important to assess in order to maximize their performance
Question:
cardiovascular and respiratory systems work together to:
Answer:
provide oxygen and remove waste from the body
Question:
cardiovascular system is responsible for:
Answer:
the delivery of oxygenated blood and nutrients to the cell
- cells need oxygen to make ATP for energy
Question:
4 chambers of the cardiovascular system
Answer:
R & L atria
- fill and then pump blood into respective ventricles
,R & L ventricles
- pump blood away from the heart
Question:
veins and venules
Answer:
carry deoxygenated blood into the heart
EXCEPTION = PULMONARY VEIN
Question:
arteries and arterioles
Answer:
carry oxygenated blood out of the heart
EXCEPTION = PULMONARY ARTERY
Question:
capillaires
Answer:
where gas exchange occurs
Question:
what is ATP?
Answer:
an energy-bearing molecule composed of carbon, hydrogen, nitrogen, oxygen, and
phosphorous atoms
Question:
what is a muscle cells capacity to store ATP?
Answer:
VERY LOW
we cannot store ATP in vast amounts, so we basically have to create ATP on demand
ATP is continuously created at a rate equal to ATP use
, Question:
3 systems by which ATP is produced by muscle fibers
Answer:
1. Creatine phosphate system
2. Rapid glycolysis
3. Oxidative Phosphorylation
Question:
Creatine phosphate system
Answer:
transfers high energy phosphate from CP to rephosphorylate ATP from ADP
- PRODUCES VERY LIMITED AMOUNT OF ATP
ADP + CP --> ATP + C
Question:
how long is creatine phosphate system used?
Answer:
UP TO 10 SECONDS LONG
- used for max exercise, high intensity
Question:
rapid glycolysis
Answer:
degradation of glucose to pyruvate or lactate
NET YIELD: we have to invest 2 ATP
- glucose = 2ATP
- glycogen = 3 ATP
anaerobic, but considered first step in aerobic production
Question:
when is rapid glycolysis used?
Answer:
Question:
cardiorespiratory fitness (CRF)
Answer:
the ability of the circulatory and respiratory systems to supply oxygen to the muscles to
perform dynamic physical activity
ex: aerobic exercise
individuals who regularly perform mod-vig PA have lower risk of CVD than sedentary
individuals
Question:
why is it important to assess CRF?
Answer:
because of its relationship with CVD risk
athletes = important to assess in order to maximize their performance
Question:
cardiovascular and respiratory systems work together to:
Answer:
provide oxygen and remove waste from the body
Question:
cardiovascular system is responsible for:
Answer:
the delivery of oxygenated blood and nutrients to the cell
- cells need oxygen to make ATP for energy
Question:
4 chambers of the cardiovascular system
Answer:
R & L atria
- fill and then pump blood into respective ventricles
,R & L ventricles
- pump blood away from the heart
Question:
veins and venules
Answer:
carry deoxygenated blood into the heart
EXCEPTION = PULMONARY VEIN
Question:
arteries and arterioles
Answer:
carry oxygenated blood out of the heart
EXCEPTION = PULMONARY ARTERY
Question:
capillaires
Answer:
where gas exchange occurs
Question:
what is ATP?
Answer:
an energy-bearing molecule composed of carbon, hydrogen, nitrogen, oxygen, and
phosphorous atoms
Question:
what is a muscle cells capacity to store ATP?
Answer:
VERY LOW
we cannot store ATP in vast amounts, so we basically have to create ATP on demand
ATP is continuously created at a rate equal to ATP use
, Question:
3 systems by which ATP is produced by muscle fibers
Answer:
1. Creatine phosphate system
2. Rapid glycolysis
3. Oxidative Phosphorylation
Question:
Creatine phosphate system
Answer:
transfers high energy phosphate from CP to rephosphorylate ATP from ADP
- PRODUCES VERY LIMITED AMOUNT OF ATP
ADP + CP --> ATP + C
Question:
how long is creatine phosphate system used?
Answer:
UP TO 10 SECONDS LONG
- used for max exercise, high intensity
Question:
rapid glycolysis
Answer:
degradation of glucose to pyruvate or lactate
NET YIELD: we have to invest 2 ATP
- glucose = 2ATP
- glycogen = 3 ATP
anaerobic, but considered first step in aerobic production
Question:
when is rapid glycolysis used?
Answer:
