Question

1. smooth muscles in the digestive system contract involuntarily to facilitate ____.2. when muscles contract and relax, they generate force that enables __.3. __ attach muscles to bones, allowing the force generated by muscle contractions to be transmitted to the bones.4. bones protect delicate organs like the brain, heart, and ____.

Explanation:

1. Digestive smooth muscle contractions move food through the gut.
2. Muscle contraction/relaxation produces movement of body parts.
3. Specific connective tissues link muscles to bones for force transfer.
4. Bones shield multiple internal organs, including this abdominal organ.

Answer:

1. peristalsis (food movement through the digestive tract)
2. body movement (locomotion and organ function)
3. Tendons
4. lungs (or other valid organs like kidneys)