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Weeks 1-6 (2)
| Question | Answer |
|---|---|
| What are Interphalangeal joints? | Hinge-type synovial joints capable of flexion and extension |
| What joint is the largest and one of the most complex and most commonly injured joints in the body? | The knee, or tibiofemoral joint |
| What percentage of body weight is skeletal muscle? | From 40% to 50% |
| What does the term posture mean? | simply maintaining optimal body position |
| What is ATP? | a nucleotide called adenosine triphosphate |
| What is muscle fatigue? | a condition in which the muscle does not respond to the strongest stimuli |
| What is disuse atrophy? | During prolonged inactivity, muscles usually shrink in mass. |
| What is the graded strength principle in relation to muscles? | The fact that skeletal muscles contract with varying degrees of strength at different times |
| What is the cardiac muscle? | The heart |
| List 3 characteristics of skeletal muscle cells | 1. Excitability (irritability)—ability to be stimulated 2. Contractility—ability to contract, or shorten, and produce body movement 3. Extensibility—ability to extend, or stretch, thereby allowing muscles to return to their resting length |
Created by:
dcontreras330