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Anatomy with Lab SCI 220
| Question | Answer |
|---|---|
| Which shoulder muscle is not part of the rotator cuff but covers it ? | deltoid - it's large, outer muscle responsible for lifting the arm |
| Which muscle allows the thumb to be drawn across the palm to touch the tip of any fingers. | Opponens pollicis- This muscle enables thumb opposition, a key movement that lets you grasp and hold objects |
| Which of the following is not a muscle of the quadriceps femoris group? | Bisceps femoris belongs to the hamstring group, located on the back of the thigh. |
| Which of the following is not a group of pennate muscles? | Tripennate- is not recognized muscle fiber arrangement type. |
| Which of the following muscles does not move the upper arm? | Trapezius- The trapeziums moves and stabilizes the scapula(shoulder blade), not the upper arm. |
| The latissimus doris muscle is an example of ____ muscle | The latissimus doris has fibers that twist as they insert, giving it a spiral arrangement |
| The origin of a muscle is on the femur, and the insertion is on the tibia. When it contracts, it bends the knee. Which of the following is true? | In this movement, the knee joint serves as the pivot point( fulcrum) for flexion. Example: Hamstring muscle (like the biceps femoris) perform this motion. |
| The flexor muscles that move the fingers are mostly located on the: | Anterior medial surface of the forearm These muscles are responisble for bending (flexing) the fingers and wrist. |
| Movement is one of the most distinctive and easily observed “characteristics of life.” | true - movement is a fundamental characteristic of living organisms. |
| Skeletal muscles constitute approximately ____ of our body weight. | 50% |