The position of the elbow joint to the wrist as it relates to the trunk is A)proximal B)medial C)inferior D)anterior
The position of the elbow joint to the wrist as it relates to the trunk is A)proximal B)medial C)inferior D)anterior
The position of the shoulder to the elbow as it relates to the wrist is A)proximal B)distal C)inferior D)anterior
The position of the shoulder to the elbow as it relates to the wrist is A)proximal B)distal C)inferior D)anterior
Motion in the sagittal plane takes place about which axis? A)longitudinal B)mediolateral C)transverse D)anteroposterior
Motion in the sagittal plane takes place about which axis? A)longitudinal B)mediolateral C)transverse D)anteroposterior
Most human movements in running take place in A)the sagittal plane B)the frontal plane C)the transverse plane D)multiple planes
Most human movements in running take place in A)the sagittal plane B)the frontal plane C)the transverse plane D)multiple planes
A subject slowly bends over at the trunk. What type of muscle action is occurring in the trunk extensors during the activity? A)Concentric/Shortening B)Eccentric/Lengthening C)Isotonic D)The extensors are not active E)Isometric
A subject slowly bends over at the trunk. What type of muscle action is occurring in the trunk extensors during the activity? A)Concentric/Shortening B)Eccentric/Lengthening C)Isotonic D)The extensors are not active E)Isometric
Levers: The Law F load r load = F effort r effort P1 vs P2: Mechanical Advantage or Disadvantage? P2 P1 F effort A)P1-> Advantage, P2-> Disadvantage A)P1-> Disadvantage, P2-> Advantage A)P1,P2 -> Disadvantage A)P1,P2-> Advantage A)I have no idea
Levers: The Law F load r load = F effort r effort P1 vs P2: Mechanical Advantage or Disadvantage? P2 P1 F effort A)P1-> Advantage, P2-> Disadvantage A)P1-> Disadvantage, P2-> Advantage A)P1,P2 -> Disadvantage A)P1,P2-> Advantage A)I have no idea
Levers: The Law F load r load = F effort r effort r effort = ? 100kg F effort r load =1m F effort =my laptop (2kg) r load ? r effort r effort = a)200m b)0.02m c)50m d)1m e)I dont understand
Levers: The Law F load r load = F effort r effort r effort = ? 100kg F effort r load =1m F effort =my laptop (2kg) r load ? r effort r effort = a)200m b)0.02m c)50m d)1m e)I dont understand r effort = (F load r load )/F effort r effort = (100 kg) (1m)/(2kg) r effort = 50m
Lever Problems The biceps brachii and brachioradialis are both elbow flexors, but act at different distances from the elbow (5 cm, 20cm). 1) If I want to use the minimum amount of muscle force possible, which muscle and how much force should I use to lift the 2kg load (15cm)? Only one muscle can be used. r effort-biceps r effort-brachioradialis r load J (Elbow) A) Biceps : 6kg B) Brachioradialis : 1.5 kg C) Brachioradialis : 6 kg D) Biceps : 1.5 kg
Lever Problems The biceps brachii and brachioradialis are both elbow flexors, but act at different distances from the elbow (5 cm, 20cm). 1) If I want to use the minimum amount of muscle force possible, which muscle and how much force should I use to lift the 2kg load (15cm)? Only one muscle can be used. r effort-biceps r effort-brachioradialis r load J (Elbow) A) Biceps : 6kg B) Brachioradialis : 1.5 kg C) Brachioradialis : 6 kg D) Biceps : 1.5 kg
Lever Problems The biceps brachii and brachioradialis are both elbow flexors, but act at different distances from the elbow (5 cm, 20cm). 1) If I want to use the minimum amount of muscle force possible, which muscle and how much force should I use to lift the 2kg load (15cm)? Only one muscle can be used. 2) Indicate at which point along my arm I should hang the load if I want the biceps brachii to function as a force-amplifier. r effort-biceps r effort-brachioradialis r load ABCDE: None J (Elbow)
Lever Problems The biceps brachii and brachioradialis are both elbow flexors, but act at different distances from the elbow (5 cm, 20cm). 1) If I want to use the minimum amount of muscle force possible, which muscle and how much force should I use to lift the 2kg load (15cm)? Only one muscle can be used. 2) Indicate at which point along my arm I should hang the load if I want the biceps brachii to function as a force-amplifier. r effort-biceps r effort-brachioradialis r load A BCDE: None J (Elbow)
Lifting a box Calculate how much force in the back extensor muscles is needed when lifting a 1 kg box with the arms outstretched (r = 30 cm), compared to when the arms are beside the body (r = 5 cm). The muscles effort arm: (r effort = 5cm). Draw a diagram! A)6 times less force A)6 times more force A)the same force A)150 times more A)I dont understand
Lifting a box Calculate how much force in the back extensor muscles is needed when lifting a 1 kg box with the arms outstretched (r = 30 cm), compared to when the arms are beside the body (r = 5 cm). The muscles effort arm: (r effort = 5cm). Draw a diagram! A)6 times less force A)6 times more force A)the same force A)150 times more A)I dont understand