20+ Body Parts That Start With R

There are many body parts that start with R, but some of the more common ones are the radius, ribcage, and retina.

The radius is the smaller of the two bones in the forearm, and it helps to stabilize the wrist and hand.

The ribcage is a series of bones that protect the lungs and heart, and the retina is part of the eye that helps to detect light.

So, Below is the list of all body parts starting with R.

Table of Contents

Body Parts That Start With R

Radius: One of two forearm bones, located on the thumb side of the arm.
Rectus abdominis: Commonly referred to as the “abs” or abdominal muscles, these long flat muscles run down either side of the midline and are used for movement and stability in the core region.
Rectus femoris: Located at the front of the thigh, this muscle helps flex and extend the leg at the hip joint and also stabilizes both hip and knee joints when standing.
Rhomboid muscles: A pair of large triangular muscles that attach from the inside edges of your shoulder blades to your spine, they help pull your shoulders back and down during posture exercises.
Retina: The light-sensitive tissue in the back of the eye that captures images and sends them to the brain.
Ribs: A set of 24 bones connected to the sternum and spine, they help protect the vital organs in your chest cavity.
Rotator cuff muscles: Four small muscles located around the shoulder joint that control movement between shoulder blades and arms.
Rami communicantes: Nerve bundles that connect spinal nerves with different parts of the body, mainly providing sensory information from limbs to brain.
Round ligaments: Ligaments located at either side of the uterus which help support it during pregnancy.
Renal pelvis: The area inside each kidney where urine collects before it travels to the bladder.