Depression

Definition

Depression is a downward movement of a body part, typically referring to the lowering of bones or tissues in the musculoskeletal system. It often occurs at joints and plays a crucial role in various skeletal movements.

5 Must Know Facts For Your Next Test

1. Depression is the opposite of elevation, which involves raising a body part.
2. Common examples include the lowering of the shoulders or opening of the jaw.
3. The primary muscles involved in shoulder depression are the lower trapezius and pectoralis minor.
4. Depression movements can occur in both axial and appendicular skeletons.
5. Abnormalities in depression movements can indicate issues within joints or muscles.

Review Questions

• What is the opposite movement of depression in joint mechanics?
• Name two muscles primarily involved in shoulder depression.
• Give an example of depression movement involving the jaw.

Related terms

Elevation:

Elevation is an upward movement of a body part, such as lifting the shoulders.

Flexion:

Flexion refers to bending a joint, decreasing the angle between two bones.

Extension:

Extension is straightening a joint, increasing the angle between two bones.