Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Chapter 8
The Muscular system
| Term | Definition |
|---|---|
| Bursae | Small, synovial lined sacs located between some tendons and underlying bones acting as a cushion |
| Sarcomere | Basic contractile unit |
| Sliding filament theory | Muscle contraction mechanism |
| Prime Mover | mainly responsible for producing a given movement |
| Synergist muscles | Help the prime mover produce a given movement |
| Antagonist muscles | oppose the action of a prime mover in a given movement |
| Eccentric contraction | Tension during muscle lengthening |
| Oxygen debt | EPOC or excessive post-exercise consumption |
| Motor Unit | Combination of motor neuron with the muscle fibers it controls |
| Threshold Stimulus | Minimal level of stimulation required to cause a muscle fiber to contract |
| Isotonic Contraction | Produces movement at a joint because the muscle changes length |
| Walking, Running | Produced by isotonic contractions |
| Myofilaments | composed of proteins called Actin and Myosin |
| Fatigue | Muscle fibers are stimulated repeatedly without adequate periods of rest, the strength of the muscle contraction decreases |
| Concentric Contraction | Muscle shortens |
| Disuse Atrophy | A condition cause during prolonged inactivity, muscles usually shrink in mass |
| Hypertrophy | Increase in muscle size |
| Strength training | Muscle hypertrophy can be enhanced by this |
| Endurance training | Also called Aerobic training |
| Supination and Pronation | Hand positions that result from twisting forearm |
| Mastication | Chewing composed of Masseter and the Temporal |
| Sternocleidomastoid | Rotates and flexes head and neck |
| Trapezius | Extends head and neck |
| Intercostal muscles | located between the ribs |
| Diaphragm | Muscle separating the thoracic and abdominal cavities |
| Hamstring Muscles | (3) Muscles are called Semimembranosus, Semitendinosus, Biceps femoris |
| Skeletal muscle | Also called Striated or voluntary muscle |
| Thick myofilaments | Formed from a protein called myosin |
| Thin myofilaments | Mainly composed of the protein actin |
| Myoglobin | Large protein molecule in the cytoplasm of muscle cells that attracts oxygen and holds it temporarily |
| Flexion | A movement that makes the angle between two bones at their joint smaller |
| Extension | A movement that makes the angle between two bones at their joint larger |
| Rotation | A movement around a longitudinal axis |
| Triceps Brachii | "Boxers muscle" |
| Abdominal Muscles | Rectus abdominis, External oblique, Internal oblique, Transversus abdominis |
| Dorsiflexion and plantar flexion | Foot movements (upward and downward ankle movement) |
| Hypothermia | A body temperature below normal |
Created by:
ashleecjim
Popular Nursing sets