Term
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Definition
Movement
Stability
Control of body openings and passages
Heat production
Glycemic control |
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Term
| 5 GOLDEN RULES OF SKELETAL MUSCLE ACTIVITY |
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Definition
1. Most muscles cross at least one joint
2. Typically the bulk of the muscle lies proximally to the joint
3. All muscles have at least two attachments
Origin
Insertion
4. Muscles can only pull-not push
5. During contraction the muscle insertion moves towards the origin |
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Term
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Definition
| BOSS Provides most of force, flexion at the elbow: Bachialis and Triceps |
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Term
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Definition
| WORKS TOGETHER Aids the prime mover, biceps brachii: stabilizes, restricts, modifies direction |
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Term
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Definition
| WORKS AGAINST Opposes the prime mover: Triceps and Brachialis |
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Term
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Definition
| ANCHORS Prevents bone from moving, hold it steady: Rhomboids |
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Term
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Definition
| Thick in the middle, tapered at the ends: Bicep Brachii |
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Term
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Definition
| have fairly uniform width and parallel fasciles:REctus Abdominus |
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Term
| TRIANGULR (CONVERGENT) MUSCLES |
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Definition
| Fan-shaped, broad at one end and narrower at the other: Pectoralis Major. |
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Term
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Definition
Feather-shaped, insert obliquely on a tendon that runs the length of the muscle, like the shaft of a feather:
unipennate: all fascicles approach tendon from one side
PALMAR INTEROSSEOUS MUSCLE (hand)
bipenate: fascisles approach tendon from both sides
RECTUS FEMORIS
multipennate: a bunch of feather coming together DELTOID |
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Term
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Definition
Prime mover abdominal, hipe
Synergists obliques, rectus femoris |
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Term
I band=light band
A band=dark band |
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Definition
Myofibrils are aligned giving distinct bands.
purple/orange stack are A band |
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Term
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Definition
| Contractile unit of a muscle fiber. |
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Term
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Definition
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Term
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Definition
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Term
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Definition
| Myosin attach for muscle movement, needs calcium to contract. |
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Term
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Definition
| Lies over actin backbone (ribbon like) |
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Term
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Definition
| Attached to Tropomyosin (snail like shell) |
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Term
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Definition
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Term
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Definition
| association site of neuron and muscle |
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Term
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Definition
White-Fast glycolytic
Large diameter
Densely packed myofibrils
Fewer mitochondria
Fibers fatigue rapidly |
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Term
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Definition
Red/ Slow oxidative more myoglobin
myoglobin is 02 transporting protein
More mitochondria
Smaller diameter, takes 3x long to contract |
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Term
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Definition
| Fuel for muscle contractions |
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Term
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Definition
Fulcrum at one end
Resistance in opposite end
Effort is in between
Great speed and distance
Biceps Brachii |
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Term
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Definition
Fulcrum at one end
Effort at opposite end
Resistance in between
Calf Muscle |
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Term
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Definition
Fulcrum in middle
Effort at one end
Resistance at the opposite end
head /neck |
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Definition
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