BIOBEYOND: UNIT 8 CARDIO LAB: A
CHANGE OF HEART/ QS AND ANS/
Question : To learn more about how your body manages
physically demanding tasks, select a physical activity that you would most likely find yourself doing. Walking to work or school
Correct answer: Walking to work or school
Question : Now imagine you are knee-deep in that activity.
You have exerted yourself for almost an hour. How would this make you feel?
Correct answer: All
Question : Predict what you think is going on inside your
body during vigorous exercise? (Select all that apply)
Correct answer: All
Question : What type of person may also experience
cardiovascular deconditioning? Select only one. 3rd picture down (woman laying in hospital bed)
Correct answer: 3rd picture down (woman laying in hospital
bed)
Question : Choose which one will be most effective in
preventing the loss of cardiac tissue.
Correct answer: Working Out
Question : Take a look at the following exercise devices.
Select whichever one you think may be useful in maintaining heart health. 1st Picture (stationary bicycle)
Correct answer: 1st Picture (stationary bicycle)
Question : But how does blood rich in oxygen and glucose
reach the muscle cells that need them?
Correct answer: Systemic Circulation
Question : Place the dot on the correct location.
Correct answer: Left ventricle
Question : Based on the evidence on the right, do you think
there is a relationship between cardiac output and intense physical activity?
Correct answer: Yes, as physical activity gets more intense,
cardiac output increases
Question : How would a decrease in cardiac output affect
one's exercise capacity?
Correct answer: Oxygen delivery would decrease and the
ability to do rigorous exercise would decline
Question : If both are full of water, which will have a greater
output (ie. deliever more water) upon bursting?
Correct answer: 1st picture
Question : Why do you believe the balloon on the left will
have a greater output?
Correct answer: The balloon on the left is larger and can hold
more water
Question : What do you notice about the maximum amount
of blood filling the left ventricle of astronauts' hearts after 12 weeks of spaceflight?
Correct answer: The maximum volume of blood filling the
heart's ventricles is lower after 12 weeks in space
Question : Does the evidence in the graph shown (right)
support the idea that blood volume decreases in microgravity?
Correct answer: Yes
Question : In the case of astronauts, less blood fills the heart's
left ventricle. Make an inference about how you think the heart will respond.
Correct answer: The heart will not have to contract as hard.
Heart muscles will atrophy (decrease in mass) as a result
Question : Use the evidence shown to explain how a
reduction in the volume of blood filling the ventricles could impact the structure of the ventricles.
Correct answer: There is a decrease in the mass of astronauts'
left ventricle .
Question : Predict how changes to the left ventricle might
affect the body's ability to supply cells with oxygen and nutrients.
Correct answer: top to bottom Down red arrow for all
Question : Based on the astronaut's exercise routine shown,
what, if any, changes would you make to their exercise routine?
Correct answer: Increase cardiovascular exercise on all days
except Saturday
Question : Summarize to your crew how their heart changes
while in space and what they can do to help prevent such a change. Your response should be over 120 characters.
Correct answer: One thing that I would do to prevent a
reduction in the exercise capacity of my crew is increase cardiovascular exercise with the use of a stationary bicycle.Making sure your crew members carry out cardiovascular exercise when in space is critical for maintaining their blood volume and cardiovascular health.