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IB SEHS Exam Review Questions with Correct Answers
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IB SEHS Exam Review Questionswith Correct Answers
What type of muscle contraction involves no change in the muscle length - -
Isometric
-Movement that increases the angle between articulating elements opening
the joint - -extension
-making circular movements - -circumduction
-muscle that works opposite to return the joint to its original position - -
antagonist
-pain and stiffness felt in muscles the next day after working out is caused
from - -tearing of muscle fibers
-which of the following treatment method would be best for DOMS - -foam
roller
-which type of muscle contraction type is rare in sport - -isokinetic
-refers to muscle action in which the muscle force yields to the imposed load
- -eccentric
-which describes the movement of depression - -movement at a joint in an
inferior direction
-what is the opposite of supination - -pronation
-wrist going down is an example of what type of movement - -flexion
-arm coming down next to body is what type of movement - -adduction
-feet inverted to the left - -eversion
-foot inverted to the right - -inversion
-what pulls the actin filaments inwards to shorten a muscle - -myosin
-which part of the motor neuron is nearest to the muscle fibre it stimulates -
-motor end plate
, -an action potential travels through the muscle fibers down the t-tubules,
and stimulates the sarcoplasmic reticulum to release what - -calcium
-shortening/lengthening of sarcomere. Z lines move closer, I Band, H Zone
decrease - -contraction
-attached to the myosin heads are a chemical called ___ that allows for the
head to bend - -ATP
-the neurotransmitters in the vesicle of the motor end plate that creates a
"bridge" between the neuron and the muscle fiber (across the synapse) the
chemical that initiates a muscle contraction opens channels in the t-tubules -
-acetylcholine
-carries message from the central nervous system to the muscle fiber - -
axon
-the area where there is both actin/myosin - -A Band
-due to high concentrations of calcium, Ca+ binds to _____ and causes a shift
of tropomyosin which prevents the blocking action of tropomyosin - -
Troponin
-baseball and tennis would rely mostly on this type of muscle fiber - -fast
twitch
-which type of muscle fibers are considered slow twitch fibers - -I
-which sport would benefit from the activity in training of short sprints with a
break for 20-30 seconds over and over for an hour - -football
-volume of air breathed in and out in any one breath - -tidal volume
-volume of air in excess of tidal volume that can be exhaled forcibly - -
expiratory reserve volume
-inflow and outflow of air between the atmosphere and lungs - -pulmonary
ventilation
-additional inspired air over and above tidal volume - -inspiratory reserve
volume
-The volume of air in the lungs after a maximal inhalation - -total lung
capacity
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