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Ch. 15 & 16
Anatomy stack 1
| Question | Answer |
|---|---|
| What are the 4 parts of the lever system? | Bone, joint, load, and muscle contraction |
| How are muscles named? | According to size, shape, location, and action |
| True or false: bones serve as fulcrums and joints serve as levers? | False, bones serve as levers (contraction and pulling) and joints serve as fulcrums (pivot point) |
| What are the 4 main abdominal muscles? | rectus abdominus, external oblique, internal oblique, and transversus abdominus |
| What makes up the erector spinae muscle? | Long, thin muscles that travel down the back |
| What is the origin, insertion, and function of the trapezius muscle? | Occipital bone, clavicle, raises and lowers the shoulder |
| What muscles make up the rotator cuff? | Supraspinatus, infraspinatus, teres minor, and subscapularis |
| Describe the difference between extrinsic and intrinsic muscles? | Extrinsic muscles originate outside a structure and control large movements (wrist movement), while intrinsic muscles originate within a muscle and control fine motor skills (dexterity) |
| True or false: the triceps brachii is an extensor muscle that extends the lower arm? | True |
| What is the syndrome characterized by weakness, pain, or tingling in the radial side of the hand? | Carpal tunnel syndrome. |
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