- Physical Examination
- Surgical Examination
- Ophthalmology
- Clinical Skills
- Orthopedics
- Surgery Videos
- Laparoscopy
- Pediatrics
- Funny Videos
- Cardiothoracic Surgery
- Nursing Videos
- Plastic Surgery
- Otorhinolaryngology
- Histology and Histopathology
- Neurosurgery
- Dermatology
- Pediatric Surgery
- Urology
- Dentistry
- Oncology and Cancers
- Anatomy Videos
- Health and Fitness
- Radiology
- Anaesthesia
- Physical Therapy
- Pharmacology
- Interventional Radiology
- Cardiology
- Endocrinology
- Gynecology
- Emergency Medicine
- Psychiatry and Psychology
- Childbirth Videos
- General Medical Videos
- Nephrology
- Physiology
- Diet and Food Health
- Diabetes Mellitus
- Neurology
- Women Health
- Osteoporosis
- Gastroenterology
- Pulmonology
- Hematology
- Rheumatology
- Toxicology
- Nuclear Medicine
- Infectious Diseases
- Vascular Disease
- Reproductive Health
- Burns and Wound Healing
- Kidney Zone Podcast
- Other
Muscles Beginning With R
8 muscles in the reference begin with the letter R. Every name links to a page giving the muscle’s origin, insertion, main actions and nerve supply.
A B C D E F G H I L M N O P Q R S T V Z
| Muscle | Main actions | Nerve supply |
|---|---|---|
| Rectus Abdominis | Flexes the trunk (sit-up motion); Compresses the abdomen | Lower intercostal nerves (T7–T12) |
| Rectus Capitis Anterior | Flexes the head on the neck | C1–C2 spinal nerves |
| Rectus Capitis Posterior Major | Extends the head; Turns the face to the same side | Suboccipital nerve (dorsal ramus of C1) |
| Rectus Femoris | Straightens the knee (extension); Flexes the thigh at the hip | Femoral nerve (L2–L4) |
| Rhomboid Major | Retracts the shoulder blade; Rotates the scapula downward | Dorsal scapular nerve (C4–C5) |
| Rhomboid Minor | Retracts the shoulder blade; Rotates the scapula downward | Dorsal scapular nerve (C4–C5) |
| Rotator Cuff (Group) | Holds the humeral head centred in the socket; Fine rotation of the arm | Suprascapular, axillary and subscapular nerves (C5–C7) |
| Rotatores | Rotate the spine to the opposite side; Fine stabilisation of the spine | Dorsal rami of spinal nerves |
Please note: This page is an anatomy education summary for students and curious readers, not medical advice. Attachment points are given in their classic short form; individual anatomy varies, and detailed dissection-level descriptions belong in an anatomy atlas.