Questions: Which structure reduces friction around tendons? ligaments bursae origins insertions myofibrils Question 19 3 pts

The answer is the second one (bursae): bursae.

Explanation for each option:

1. Ligaments: These are tough, fibrous tissues that connect bones to other bones at joints. They do not reduce friction around tendons.
2. Bursae: These are small fluid-filled sacs that provide a cushion between bones and tendons and/or muscles around a joint. They help reduce friction and allow for smooth movement.
3. Origins: This term refers to the fixed attachment point of a muscle, typically on a bone. It does not play a role in reducing friction around tendons.
4. Insertions: This term refers to the movable attachment point of a muscle, typically on a bone. Like origins, it does not reduce friction around tendons.
5. Myofibrils: These are the basic rod-like units of a muscle cell that are involved in muscle contraction. They do not reduce friction around tendons.

Summary: Bursae are the structures that reduce friction around tendons, allowing for smooth and efficient movement of muscles and joints.