Question

muscle movements, roles, and names
there are five basic guidelines for understanding gross muscle activity. we refer to these as the five golden rules of skeletal muscle activity because they make it easier to understand muscle movements and appreciate muscle interactions (table 6.2).
types of body movements
every one of our 600 - odd skeletal muscles is attached to bone, or to other ( 1. ) tissue structures, at no fewer than two points. one of these points, the origin, is attached to the immovable or less movable bone (figure 6.12). think of the origin as the anchor, or leverage, point. another point, the insertion, is attached to the ( 2. ) bone. when the muscle contracts, the insertion moves toward the origin.
some muscles have interchangeable origins and insertions, depending on the action being performed. for example, the rectus femoris muscle of the anterior thigh crosses both the hip and knee joints. its most common ( 3. ) is to extend the knee, in which case the proximal pelvic attachment is the origin. however, when the knee bends (by other muscles), the rectus femoris can flex the hip, and then its distal attachment on the leg is considered the origin.
generally speaking, body movement occurs when muscles contract across joints. the type of movement depends on the mobility of the ( 4. ) and the location of the muscle in relation to the joint. the most obvious examples of the action of muscles on bones are the movements that occur at the joints of the limbs. however, less freely movable bones are also tugged into motion by the muscles, such as the vertebraes ( 5. ) when we bend to one side.

1. connective 2. movable 3. action 4. joint 5. movements

1 action 2. joint 3 movements 4. connective 5. movable

1. movements 2. connective 3. movable 4. action 5. joint
2. joint 2 movements 3. connective 4. movable 5. action

1 movable 2. action 3 joint 4. movements 5. connective

Explanation:

1. Skeletal muscles are attached to bone or other connective tissue structures.
2. The insertion is attached to the movable bone.
3. The most common action of rectus femoris is to extend the knee.
4. Movement type depends on joint mobility.
5. Muscles tug less - freely movable bones like vertebrae into motion.

Answer:

1. connective
2. movable
3. action
4. joint
5. movements