Author

Rachel Hartley

A licensed massage therapist for 12 years, Rachel Hartley, LMT, BCTMB, runs a sports massage practice in West Lafayette, Indiana, working primarily with distance runners and weightlifters. She writes for Biology Insights on musculoskeletal anatomy and soft-tissue recovery.

Orbicularis Oculi Muscle: Location, Function, and Issues
What Are Skin Folds and Why Do They Matter?
Arrector Pili Muscle: Anatomy, Role, and Research Insights
How Fast Does Scar Tissue Form?
Panniculus Adiposus: Anatomy, Functions & Health Risks
What Is the Function of Muscles That Make Hair Stand Up?
What Are the Stimuli for Arrector Pili Muscle Contraction?
What Muscle Causes Wrinkles Across the Forehead?
Where Is the Axilla? Location, Anatomy, and Function
What Happens When the Arrector Pili Muscles Contract?
The Function and Anatomy of Hair Receptors
What Are Skin Tension Lines on the Back?
What Are the Superficial Layers of the Body?
The Arrector Pili Muscle: Function, Anatomy, and Goosebumps