lever and reflexes

Question 1

first class lever

Answer 1

effort –> fulcrum –> load (seesaw)

Question 2

second class lever

Answer 2

fulcrum –> load –> effort (wheelbarrow)

Question 3

third class lever

Answer 3

fulcrum –> effort –> load (catapult)

Question 4

example of first class

Answer 4

neck extensors

Question 5

example of second class

Answer 5

bouncing baby on knee
–> hip is fulcrum, baby pushes down thigh as resistance, bouncing foot up and down is effort

Question 6

example of third class

Answer 6

bicep curl
–> fulcrum at elbow joint, effort is biceps, weight in hand is resistance

Question 7

deep tendon reflexes

Answer 7

stretch reflex
–> stability, equilibrium, posture, monosynaptic, reciprocal inhibition

Question 8

muscle spindles action and function

Answer 8

senses stretch (reflex is to contract)

Question 9

golgi tendon organs action and function

Answer 9

senses tension
–> relaxes muscle to prevent tears and detachment