MGRADES
IB SEHS - Midterm Exam UPDATED
ACTUAL Exam Questions and CORRECT
Answers
Why might a doctor be interested in assessing VO2 in an exercise test? - CORRECT
ANSWER - -VO2 is the amount of oxygen a person takes in during exercise.
-This might be interesting to assess to a doctor because it helps them understand the oxygen
going to the blood during physical activity.
-It shows how effective the lungs, heart blood flow, and muscles are working with each other.
how does oxygen transfer from blood to muscles? - CORRECT ANSWER - the
concentration of oxygen in the muscle will be lower in the muscle than in the blood, so the
oxygen will transfer to the muscle through diffusion
Describe the process of breathing and comment on how exercise affects this process. -
CORRECT ANSWER - -diaphragm pulls downward on the lungs and allows for more
room inside the lungs to take in oxygen from high to low pressure
-after the gas exchange, the diaphragm relaxes, pushing out the carbon dioxide a body has
produced after taking in oxygen to an environment of lower pressure
-exercise is a very important part of this process because it requires more oxygen to be delivered
to the blood.
-the diaphragm is required to contract and relax faster to allow for more oxygen in the body and
bloodstream to the muscles
how does co2 transfer from blood to lungs? - CORRECT ANSWER - the concentration of
CO2 in the alveoli will be lower than the concentration of CO2 in the blood, so CO2 will diffuse
from the blood to the alveoli to be removed from the body via the lungs
how does co2 transfer from muscles to blood? - CORRECT ANSWER - because there's a
lower concentration of co2 in the blood stream, co2 will diffuse from the muscle into the blood
to be carried to the alveoli
, MGRADES
how does oxygen transfer from the lungs to the blood? - CORRECT ANSWER - the blood
has a lower concentration of oxygen than the alveoli, so oxygen diffuses from the alveoli into the
bloodstream to be taken to the muscles
hemoglobin - CORRECT ANSWER - pigment that binds oxygen for transport in the
blood, found in red blood cells
hamstring muscles - CORRECT ANSWER - biceps femoris, semitendinosus,
semimembranosus (3)
quadricep muscles - CORRECT ANSWER - rectus femoris, vastus lateralis, vastus
medialis, vastus intermedius (4)
calf muscles - CORRECT ANSWER - gastrocnemius (most superficial) and soleus (2)
metacarpals - CORRECT ANSWER - bone proximal to phalanges
patella - CORRECT ANSWER - bone anterior to distal end of femur
proximal - CORRECT ANSWER - closer to the point of attachment
distal - CORRECT ANSWER - farther from the point of attachment of a limb to the body
trunk
anterior - CORRECT ANSWER - front of the body
posterior - CORRECT ANSWER - toward the back of the body
scapula - CORRECT ANSWER - bone posterior to clavicle
IB SEHS - Midterm Exam UPDATED
ACTUAL Exam Questions and CORRECT
Answers
Why might a doctor be interested in assessing VO2 in an exercise test? - CORRECT
ANSWER - -VO2 is the amount of oxygen a person takes in during exercise.
-This might be interesting to assess to a doctor because it helps them understand the oxygen
going to the blood during physical activity.
-It shows how effective the lungs, heart blood flow, and muscles are working with each other.
how does oxygen transfer from blood to muscles? - CORRECT ANSWER - the
concentration of oxygen in the muscle will be lower in the muscle than in the blood, so the
oxygen will transfer to the muscle through diffusion
Describe the process of breathing and comment on how exercise affects this process. -
CORRECT ANSWER - -diaphragm pulls downward on the lungs and allows for more
room inside the lungs to take in oxygen from high to low pressure
-after the gas exchange, the diaphragm relaxes, pushing out the carbon dioxide a body has
produced after taking in oxygen to an environment of lower pressure
-exercise is a very important part of this process because it requires more oxygen to be delivered
to the blood.
-the diaphragm is required to contract and relax faster to allow for more oxygen in the body and
bloodstream to the muscles
how does co2 transfer from blood to lungs? - CORRECT ANSWER - the concentration of
CO2 in the alveoli will be lower than the concentration of CO2 in the blood, so CO2 will diffuse
from the blood to the alveoli to be removed from the body via the lungs
how does co2 transfer from muscles to blood? - CORRECT ANSWER - because there's a
lower concentration of co2 in the blood stream, co2 will diffuse from the muscle into the blood
to be carried to the alveoli
, MGRADES
how does oxygen transfer from the lungs to the blood? - CORRECT ANSWER - the blood
has a lower concentration of oxygen than the alveoli, so oxygen diffuses from the alveoli into the
bloodstream to be taken to the muscles
hemoglobin - CORRECT ANSWER - pigment that binds oxygen for transport in the
blood, found in red blood cells
hamstring muscles - CORRECT ANSWER - biceps femoris, semitendinosus,
semimembranosus (3)
quadricep muscles - CORRECT ANSWER - rectus femoris, vastus lateralis, vastus
medialis, vastus intermedius (4)
calf muscles - CORRECT ANSWER - gastrocnemius (most superficial) and soleus (2)
metacarpals - CORRECT ANSWER - bone proximal to phalanges
patella - CORRECT ANSWER - bone anterior to distal end of femur
proximal - CORRECT ANSWER - closer to the point of attachment
distal - CORRECT ANSWER - farther from the point of attachment of a limb to the body
trunk
anterior - CORRECT ANSWER - front of the body
posterior - CORRECT ANSWER - toward the back of the body
scapula - CORRECT ANSWER - bone posterior to clavicle
